Must know! Linux commands..

alias Create an alias
apropos Search Help manual pages (man -k)
awk Find and Replace text, database sort/validate/index
break Exit from a loop
builtin Run a shell builtin
bzip2 Compress or decompress named file(s)

cal Display a calendar
case Conditionally perform a command
cat Display the contents of a file
cd Change Directory
cfdisk Partition table manipulator for Linux
chgrp Change group ownership
chmod Change access permissions
chown Change file owner and group
chroot Run a command with a different root directory
cksum Print CRC checksum and byte counts
clear Clear terminal screen
cmp Compare two files
comm Compare two sorted files line by line
command Run a command - ignoring shell functions
continue Resume the next iteration of a loop
cp Copy one or more files to another location
cron Daemon to execute scheduled commands
crontab Schedule a command to run at a later time
csplit Split a file into context-determined pieces
cut Divide a file into several parts

date Display or change the date & time
dc Desk Calculator
dd Data Dump - Convert and copy a file
ddrescue Data recovery tool
declare Declare variables and give them attributes
df Display free disk space
diff Display the differences between two files
diff3 Show differences among three files
dig DNS lookup
dir Briefly list directory contents
dircolors Colour setup for `ls’
dirname Convert a full pathname to just a path
dirs Display list of remembered directories
du Estimate file space usage

echo Display message on screen
egrep Search file(s) for lines that match an extended expression
eject Eject removable media
enable Enable and disable builtin shell commands
env Environment variables
ethtool Ethernet card settings
eval Evaluate several commands/arguments
exec Execute a command
exit Exit the shell
expand Convert tabs to spaces
export Set an environment variable
expr Evaluate expressions

false Do nothing, unsuccessfully
fdformat Low-level format a floppy disk
fdisk Partition table manipulator for Linux
fgrep Search file(s) for lines that match a fixed string
file Determine file type
find Search for files that meet a desired criteria
fmt Reformat paragraph text
fold Wrap text to fit a specified width.
for Expand words, and execute commands
format Format disks or tapes
free Display memory usage
fsck File system consistency check and repair
ftp File Transfer Protocol
function Define Function Macros

gawk Find and Replace text within file(s)
getopts Parse positional parameters
grep Search file(s) for lines that match a given pattern
groups Print group names a user is in
gzip Compress or decompress named file(s)

hash Remember the full pathname of a name argument
head Output the first part of file(s)
history Command History
hostname Print or set system name

id Print user and group id’s
if Conditionally perform a command
ifconfig Configure a network interface
import Capture an X server screen and save the image to file
install Copy files and set attributes

join Join lines on a common field

kill Stop a process from running

less Display output one screen at a time
let Perform arithmetic on shell variables
ln Make links between files
local Create variables
locate Find files
logname Print current login name
logout Exit a login shell
look Display lines beginning with a given string
lpc Line printer control program
lpr Off line print
lprint Print a file
lprintd Abort a print job
lprintq List the print queue
lprm Remove jobs from the print queue
ls List information about file(s)
lsof List open files

make Recompile a group of programs
man Help manual
mkdir Create new folder(s)
mkfifo Make FIFOs (named pipes)
mkisofs Create an hybrid ISO9660/JOLIET/HFS filesystem
mknod Make block or character special files
more Display output one screen at a time
mount Mount a file system
mtools Manipulate MS-DOS files
mv Move or rename files or directories

netstat Networking information
nice Set the priority of a command or job
nl Number lines and write files
nohup Run a command immune to hangups
nslookup Query Internet name servers interactively

passwd Modify a user password
paste Merge lines of files
pathchk Check file name portability
ping Test a network connection
popd Restore the previous value of the current directory
pr Prepare files for printing
printcap Printer capability database
printenv Print environment variables
printf Format and print data
ps Process status
pushd Save and then change the current directory
pwd Print Working Directory

quota Display disk usage and limits
quotacheck Scan a file system for disk usage
quotactl Set disk quotas

ram ram disk device
rcp Copy files between two machines.
read read a line from standard input
readonly Mark variables/functions as readonly
remsync Synchronize remote files via email
return Exit a shell function
rm Remove files
rmdir Remove folder(s)
rsync Remote file copy (Synchronize file trees)

screen Terminal window manager
scp Secure copy (remote file copy)
sdiff Merge two files interactively
sed Stream Editor
select Accept keyboard input
seq Print numeric sequences
set Manipulate shell variables and functions
sftp Secure File Transfer Program
shift Shift positional parameters
shopt Shell Options
shutdown Shutdown or restart linux
sleep Delay for a specified time
sort Sort text files
source Run commands from a file `.’
split Split a file into fixed-size pieces
ssh Secure Shell client (remote login program)
strace Trace system calls and signals
su Substitute user identity
sum Print a checksum for a file
symlink Make a new name for a file
sync Synchronize data on disk with memory

tail Output the last part of files
tar Tape ARchiver
tee Redirect output to multiple files
test Evaluate a conditional expression
time Measure Program running time
times User and system times
touch Change file timestamps
top List processes running on the system
traceroute Trace Route to Host
trap Run a command when a signal is set(bourne)
tr Translate, squeeze, and/or delete characters
true Do nothing, successfully
tsort Topological sort
tty Print filename of terminal on stdin
type Describe a command

ulimit Limit user resources
umask Users file creation mask
umount Unmount a device
unalias Remove an alias
uname Print system information
unexpand Convert spaces to tabs
uniq Uniquify files
units Convert units from one scale to another
unset Remove variable or function names
unshar Unpack shell archive scripts
until Execute commands (until error)
useradd Create new user account
usermod Modify user account
users List users currently logged in
uuencode Encode a binary file
uudecode Decode a file created by uuencode

v Verbosely list directory contents (`ls -l -b’)
vdir Verbosely list directory contents (`ls -l -b’)
vi Text Editor

watch Execute/display a program periodically
wc Print byte, word, and line counts
whereis Report all known instances of a command
which Locate a program file in the user’s path.
while Execute commands
who Print all usernames currently logged in
whoami Print the current user id and name (`id -un’)
Wget Retrieve web pages or files via HTTP, HTTPS or FTP

xargs Execute utility, passing constructed argument list(s)
yes Print a string until interrupted

What is Apache and How it serving the webpage?

What is Apache :

Apache is a free, open-source web server software system that is pervasive on UNIX, Linux, and similar operating system types. It is also available for Windows and other operating systems.

Apache supports a variety of features, many implemented as compiled modules which extend the core functionality. These can range from server-side programming language support to authentication schemes. Some common language interfaces support mod_perl, mod_python, Tcl, and PHP. Popular authentication modules include mod_access, mod_auth, and mod_digest. A sample of other features include SSL and TLS support (mod_ssl), a proxy module, a useful URL rewriter (also known as a rewrite engine, implemented under mod_rewrite), custom log files (mod_log_config), and filtering support (mod_include and mod_ext_filter).

Popular compression methods on Apache include the external extension module, mod_gzip, implemented to help with reduction of the size (weight) of web pages served over HTTP. Web-based blogging software such as WordPress, which run on Apache, are capable of allowing pages served to be reduced greatly in size through implementations of mod_gzip coupled with PHP, with the help of PHP’s gzdeflate and/or other methods.

How does the Apache serving the webpage:

When you connect to the URL of someone’s home page — say the notional http://www.butterthlies.com/ we shall meet later on — you send a message across the Internet to the machine at that address. That machine, you hope, is up and running, its Internet connection is working, and it is ready to receive and act on your message.

URL stands for Universal Resource Locator. A URL such as http://www.butter-thlies.com/ comes in three parts:

:///

So, in our example, <> is http, meaning that the browser should use HTTP (Hypertext Transfer Protocol); is www.butterthlies.com; and is “/ “, meaning the top directory of the host. Using HTTP/1.1, your browser might send the following request:

GET / HTTP/1.1
Host: www.butterthlies.com

The request arrives at port 80 (the default HTTP port) on the host www.butterthlies.com. The message is again in three parts: a method (an HTTP method, not a URL method), that in this case is GET, but could equally be PUT, POST, DELETE, or CONNECT; the Uniform Resource Identifier (URI) “/”; and the version of the protocol we are using. It is then up to the web server running on that host to make something of this message.

It is worth saying here — and we will say it again — that the whole business of a web server is to translate a URL either into a filename, and then send that file back over the Internet, or into a program name, and then run that program and send its output back. That is the meat of what it does: all the rest is trimming.

The host machine may be a whole cluster of hypercomputers costing an oil sheik’s ransom, or a humble PC. In either case, it had better be running a web server, a program that listens to the network and accepts and acts on this sort of message.

Differences between lighttpd and apache.

Below is some of the basic differences between lighttpd and apache.

Basic configuration

Apache:

DocumentRoot /var/www/html
CustomLog /var/www/logs/access
ErrorLog /var/www/logs/error
User www
Group www

lighttpd:

server.document-root = “/var/www/html”
accesslog.filename = “/var/www/logs/access”
server.errorlog = “/var/www/logs/error”
server.username = “www”
server.groupname = “www”
server.modules = ( “mod_accesslog” )

Authentication and Authorization .htaccess

Apache:
AuthName “My Special Directory”
AuthType Basic
AuthUserFile /var/www/passwords/users
Order deny,allow
require valid-user

lighttpd:

auth.backend = “htpasswd”
auth.backend.htpasswd.userfile = “/var/www/passwords/users”
auth.require = ( “/special/” =>
(
“method” => “basic”,
“realm” => “My Special Directory”,
“require” => “valid-user”
)
)

Virtual Host configuration

Apache:

NameVirtualHost *

ServerName “scratch.example.com”
DocumentRoot “/var/www/hosts/scratch/docs”

ServerName “sniff.example.com”
DocumentRoot “/var/www/hosts/sniff/docs”

lighttpd:

$HTTP["host"] == “scratch.example.com” {
server.document-root = “/var/www/hosts/scratch/docs/” }
$HTTP["host"] == “sniff.example.com” {
server.document-root = “/var/www/hosts/sniff/docs/” }

Virtual Host Modules:

Apache:

LoadModule vhost_alias_module modules/mod_vhost_alias.so
VirtualDocumentRoot /var/www/hosts/%1/docs

lighttpd:

server.modules = ( …, “mod_evhost”, … )
evhost.path-pattern = “/var/www/hosts/%3/docs”

PHP

Apache:

LoadModule php5_module modules/libphp5.so
AddType application/x-httpd-php .php

lighttpd:

server.modules = ( …, “mod_fastcgi”, … )
fastcgi.server =
( “.php” =>
( “localhost” =>
(
“socket” => “/tmp/php-fastcgi.socket”,
“bin-path” => “/usr/local/bin/php”
)
)
)

Monitor the hard drive temperature via command line

You can monitor the hard drive temperature via command line. For that you need to install the command binary hddtemp.

In redhat servers you can install using the command yum.

============

yum install hddtemp

============

In other server like CENTOS, FEDORA and FreeBSD you need to install it from source file with the steps given below.

=====================

>> Download the DB file

cd /etc

wget http://download.savannah.nongnu.org/releases/hddtemp/hddtemp.db

>> Download the source

cd /usr/local

wget http://download.savannah.nongnu.org/releases/hddtemp/hddtemp-0.3-beta7.tar.gz

tar -zxvf hddtemp-0.3-beta7.tar.gz

cd hddtemp-0.3-beta7

make

make install

=====================

That’s all. You have done It

Typical Output of hddtemp command.

=====================

What is Mod_dosevasive?How to install?

Mod_dosevasive:

mod_dosevasive is an evasive maneuvers module for Apache to provide evasive action in the event of an HTTP DoS or DDoS attack or brute force attack. It is also designed to be a detection and network management tool, and can be easily configured to talk to ipchains, firewalls, routers, and etcetera. mod_dosevasive presently reports abuses via email and syslog facilities.

Detection is performed by creating an internal dynamic hash table of IP Addresses and URIs, and denying any single IP address from any of the following:

* Requesting the same page more than a few times per second
* Making more than 50 concurrent requests on the same child per second
* Making any requests while temporarily blacklisted (on a blocking list)

Installation steps:

wget http://www.nuclearelephant.com/projects/do…sive.1.8.tar.gz
tar -zxvf mod_dosevasive.1.8.tar.gz
cd mod_dosevasive
/usr/local/apache/bin/apxs -iac mod_dosevasive.c
then you pico /usr/local/apache/conf/httpd.conf
and search for the lines
LoadModule dosevasive_module libexec/mod_dosevasive.so
AddModule mod_dosevasive.c
you have to be sure they where added
then add these lines

DOSHashTableSize 3097
DOSPageCount 2
DOSSiteCount 50
DOSPageInterval 1
DOSSiteInterval 1
DOSBlockingPeriod 10
DOSEmailNotify your@youdomain.com

Save the file and restart apache.

You can see results in server logs.

Some OpenVz Commands

Hello,
Following are some important commands which are normally used while working on a Hardware Node.

1) vzlist -a : Shows list of all the VPS’s hosted on the Node.
2) vzctl start VPS_ID: To start the VPS.
3) vzctl stop VPS_ID : To stop (Shut Down) the VPS
4) vzctl status VPS_ID : To view the status of the particular VPS
5) vzctl stop VPS_ID –fast : to stop the VPS quickly and forcefully
6) vzctl enter VPS_ID : To enter in a particular VPS

Configuration Commands

1) vzctl set VPS_ID –hostname vps.domain.com –save: To set the Hostname of a VPS.
2) vzctl set VPS_ID –ipadd 1.2.3.4 –save : To add a new IP to the hosting VPS.
3) vzctl set VPS_ID –ipdel 1.2.3.4 –save : To delete the IP from VPS.
4) vzctl set VPS_ID –userpasswd root:new_password –save : to reset root password of a VPS.
5) vzctl set VPS_ID –nameserver 1.2.3.4 –save : To add the nameserver IP’s to the VPS.
6) vzctl exec VPS_ID command : To run any command on a VPS from Node.
6) vzyum VPS_ID install package_name : To install any package/Software on a VPS from Node.

Here VPS_ID refers to the ID of the Particular VPS.

Apache down; clear semaphores

ipcs -s | grep apache | perl -e 'while () { @a=split(/\s+/); print `ipcrm sem $a[1]`}'

What is IMAP and what are its specific advantages over POP3?

---

IMAP stands for "Internet Message Access protocol) - a email service which helps accessing your mailbox from different computers and locations. The IMAP service allows the user to download only the message headers and decide if they want to actually download the rest of the message and the attachments.

IMAP was designed to overcome some problems with POP behavior and provide more features for delivery and management of e-mail. With IMAP, mail is kept on the mail server and is managed there by a series of commands sent to the server by your client. Copies of messages and attachments are transferred to a email client only when one request them.

By default, only descriptive information about your messages is sent to your client. This works very well over slow links or for access from devices with limited computing or storage capacity such as a PDA, mobile phone or dialup internet access.

This feature makes downloading large attachments on a slow connection more manageable and efficient. In addition, the IMAP service provides folders for the user to store emails and attachments on the server so that they can retrieve those stored messages when they log into the server from different computers.

In practical areas where POP is weak, with respect to online/disconnected operation, are strengths for IMAP, since online access was its original design center. These new features provide powerful benefits that allows the user to create folders for received and sent messages to be retrieved from any computer.

The advantages of IMAP is that it is more feature-rich and allows you to read your e-mail from any location and any device with IMAP support.

Some specific advantages of IMAP over POP include:

• Robust folders for storing received and sent messages
• Freedom for user to download attachments at will
• Provision for determining message structure without downloading entire message.
• Selective fetching of individual MIME body parts.
• Server-based searching and selection to minimize data transfer.
• Ability to append messages to a remote folder.
• Ability to set standard and user-defined message status flags.
• Support for simultaneous update and update discovery in shared folders.
• New mail notification.
• Ability to manipulate remote folders other than INBOX.
• Remote folder management (list/create/delete/rename).
• Support for folder hierarchies.
• Suitable for accessing non-email data; e.g., NetNews, documents.
• In IMAP, when a client program performs any operation on a mailbox, the server will automatically include in its response notification of any new messages that have arrived since the last notification.
• IMAP's ability to manipulate remote folders other than INBOX is fundamental to online and disconnected operation. This means being able to save messages from one folder to a different one, being able to access archived messages subsequently, and allowing for multiple incoming message folders.

How to view content of RPM package using RPM command?

rpm -q -filesbypkg -p filename.rpm

See list of MySQL databases via GNU Linux shell command line

Key words and phrases:

mysql list databases command line check if database exists

Description & Info:

Dirty secret is this will work with Windows or anything else that runs MySQL, as well as the recommended Debian, Ubuntu, Red Hat / RHEL (which is what CentOS really is) etc.

mysql -u root -p

(The long form, which is quite unnecessary, is " mysql --user=user-name --password=your-password")

Once in the MySQL command line utility:

SHOW DATABASES;

Then to see what's in a particular database:

USE agaric_example
SHOW TABLES;

Think mySQL!

Create the Database File

The first step is to create the database file. Start the mySQL client and type the following command:

mysql> create database guestdb;
Query OK, 1 row affected (0.00 sec)

mysql>

The command creates the the database, guestdb. If successful, you should receive a response like the one shown above.

After the database is created, we must select it to continue with our database building.

mysql> use guestdb;
Database changed
mysql>

Now with our database selected, we are ready for the next step.

Create a Table

Next, you need to create a database table to hold your data. The SQL here defines a table. Below is the command and the output from the command. The database created below will be used in a web guestbook application.

mysql> create table guestTbl
-> (msgID int not null primary key auto_increment,
-> name varchar(30),
-> email varchar(30),
-> msgFrom varchar(30),
-> msgDate timestamp(14),
-> msgBody text);
Query OK, 0 rows affected (0.11 sec)

mysql>

In this example, the create command creates a table named guestTbl. The table has six fields described below.

msgID - a unique number assigned to each entry. The field hold an integer value that is automatically incremented each time an entry is added.

name - a 30 character field holding the name of the guest.

email - a 30 character field holding the email address of the guest.

msgFrom - a 30 character field holding the location of the guest.

msgDate - the date and time the entry is added to the database.

msgBody - a text field holding a text message entered by the guest.

Our next step is to add data to the table.

Add data to the Table

Now we need to add some sample data to the table, so we can actually run some queries against it.

mysql> insert into guestTbl
-> (msgID, name, email, msgFrom, msgDate, msgBody) values
-> (NULL, 'Test User1', 'testuser@test.com','Smallville USA',now(),
-> 'This is the body for message 1.');
Query OK, 1 row affected (0.27 sec)

mysql>

The above command adds one row to the database. If we repeat this process for three other users, we have enough data to perform a query on the table.

Query the Database

Now we can query our database. To retrieve all the data in the table, perform the following command.

mysql> select * from guestTbl;
+-------+------------+--------------------+----------------+
----------------+---------------------------------+
| msgID | name | email |
msgFrom | msgDate | msgBody |
+-------+------------+--------------------+----------------+
----------------+---------------------------------+
| 1 | Test User1 | testuser@test.com |
Smallville USA | 20001117154626 | This is the body for message 1. |
| 2 | Test User2 | testuser2@test.com |
Smalltown USA | 20001117155043 | This is the body for message 2. |
| 3 | Test User3 | testuser3@test.com |
Smallcity CA | 20001117155201 | This is the body for message 3. |
| 4 | Test User4 | testuser4@test.com |
LittleTown CO | 20001117155319 | This is the body for message 4. |
+-------+------------+--------------------+----------------+
----------------+---------------------------------+
4 rows in set (0.06 sec)

mysql>

First off, you'll notice that if the data does not fit on a line, it is wrapped. All the data entered for the four test users is there. We can get cleaner looking output by selecting a couple of fields.

For example:

mysql> select name,email,msgFrom from guestTbl;
+------------+--------------------+----------------+
| name       | email              | msgFrom        |
+------------+--------------------+----------------+
| Test User1 | testuser@test.com  | Smallville USA |
| Test User2 | testuser2@test.com | Smalltown USA |
| Test User3 | testuser3@test.com | Smallcity CA |
| Test User4 | testuser4@test.com | LittleTown CO |
+------------+--------------------+----------------+

4 rows in set (0.05 sec)

mysql>

Quite a bit more readable.

How do I block an IP on my Linux server?

How do I block an IP on my Linux server?"
In order to block an IP on your Linux server you need to use iptables firewall. First you need to log into shell as root user. To block IP address you need to type iptables command as follows:
iptables -A INPUT -s IP-ADDRESS -j DROP
Replace IP-ADDRESS with actual IP address. For example if you wish to block ip address 65.55.44.100 for whatever reason then type command as follows:
# iptables -A INPUT -s 65.55.44.100 -j DROP

Block ports by adding the following firewall rules:

# Allow loopback access. This rule must come before the rules denying port access!!
iptables -A INPUT -i lo -p all -j ACCEPT - Rule for your computer to be able to access itself via the loopback
iptables -A OUTPUT -o lo -p all -j ACCEPT

iptables -A INPUT -p tcp -s 0/0 -d 0/0 --dport 2049 -j DROP - Block NFS
iptables -A INPUT -p udp -s 0/0 -d 0/0 --dport 2049 -j DROP - Block NFS
iptables -A INPUT -p tcp -s 0/0 -d 0/0 --dport 6000:6009 -j DROP - Block X-Windows
iptables -A INPUT -p tcp -s 0/0 -d 0/0 --dport 7100 -j DROP - Block X-Windows font server
iptables -A INPUT -p tcp -s 0/0 -d 0/0 --dport 515 -j DROP - Block printer port
iptables -A INPUT -p udp -s 0/0 -d 0/0 --dport 515 -j DROP - Block printer port
iptables -A INPUT -p tcp -s 0/0 -d 0/0 --dport 111 -j DROP - Block Sun rpc/NFS
iptables -A INPUT -p udp -s 0/0 -d 0/0 --dport 111 -j DROP - Block Sun rpc/NFS
iptables -A INPUT -p all -s localhost -i eth0 -j DROP - Deny packets which claim to be from your loopback interface.


Clearing all unwanted semaphores — Memory Tweak

for i in `ipcs | tail -80 |head -75 |cut -d ‘ ‘ -f2`; do ipcrm sem $i; done

‘ipcrm removes System V interprocess communication (IPC) objects and associated data structures from the system.’ as per the man pages.

Apache down!! Semget: No space left on device here.

Use this command if you get the error “Semget: No space left on device here” in apache error log. Make sure that you are replacing nobody with corresponding apache user.

‘’ipcrm sem `ipcs|grep nobody|awk ‘{print $2}’`'’

or

‘’ipcrm sem `ipcs|grep apache|awk ‘{print $2}’`'’

or

View the sem value using the below command

ipcs -ls

or

cat /proc/sys/kernel/sem

increase the value

echo “32000 32000 512 512″ > /proc/sys/kernel/sem

This happens on most of the server which has high apache actvity.

-------------------------------
for i in `ipcs -s | grep nobody | awk '{print $2}'`; do ipcrm -s $i; done

File compression and decompressions

I am here to show you examples of how to use tar to zip and unzip two types of files ( tar.bz2, tar.gz)

Remember certain option defined, c for create, z for extract and t for test. v verbose, and f is file. There are 2 common archive people are interested in, bz2 and tar.gz (tgz). bz2 is more compress than tar.gz, but tar.gz is faster for creating and extracting.
To create a bz2 archive, if given list of files, use option j to indicate bz2

tar cjvf filename.tar.bz2 myfile1 myfile2 myfile3

To create a bz2 archive from a folder, if folder must be included in the archive, that means will be extracted with the folder

tar cjvf filename.tar.bz2 foldername/*

To create bz2 archive from a folder but the folder is not included in the tar file.

cd foldername; tar cjvf ../filename.tar.bz2

To test the tar file to see the content of the tar file, use t option.

tar tjvf filename.tar.bz2

To extract the tar file user x option.

tar  xjvf filename.tar.bz2

For tar.gz, use back the same command option but change everything from j to z, let say to create the tar.gz file from folder.

tar czvf filename.tar.gz foldername/*

For more information, check with man

Commonly Used Port Numbers

Port Number	Protocol	Function
21	TCP	FTP (File Transfer Protocol)
22	TCP/UDP	SSH (ssh,scp copy or sftp)
23	TCP/UDP	Telnet
25	TCP/UDP	SMTP (for sending outgoing emails)
43	TCP	WHOIS function
53	TCP/UDP	DNS Server (Domain name service for DNS requests)
67 68	UDP TCP	DHCP Server DHCP Client
70	TCP	Gopher Protocol
79	TCP	Finger protocol
110	TCP	POP3 (for receiving email)
119	TCP	NNTP (Network News Transfer Protocol)
143	TCP/UDP	IMAP4 Protocol (for email service)
194	TCP	IRC
389	TCP/UDP	LDAP (light weight directory access)
443	TCP	Secure HTTP over SSL (https)
465	TCP	Secure SMTP (email) using SSL
990	TCP/UDP	Secure FTP using SSL
993	TCP	Secure IMAP protocol over SSL (for emails)
1433	TCP/UDP	Microsoft SQL server port
2082	TCP	Cpanel default port
2083	TCP	Cpanel over SSL
2086	TCP	Cpanel Webhost Manager (default)
2087	TCP	Cpanel Webhost Manager (with https)
2095	TCP	Cpanel Webmail
2096	TCP	Cpanel secure webmail over SSL
2222	TCP	DirectAdmin Server Control Panel
3306	TCP/UDP	MySQL Database Server
4643	TCP	Virtuosso Power Panel
5432	TCP	PostgreSQL Database Server
8080	TCP	HTTP port (alternative one for port 80)
8087	TCP	Plesk Control Panel Port (default)
8443	TCP	Plesk Server Control Panel over SSL
9999	TCP	Urchin Web Analytics
10000	TCP	Webmin Server Control Panel
19638	TCP	Ensim Server Control Panel

Port Number Dictionary

Port	Description	Status
0/TCP,UDP	Reserved; do not use (but is a permissible source port value if the sending process does not expect messages in response)	Official
1/TCP,UDP	TCPMUX (TCP port service multiplexer)	Official
5/TCP,UDP	RJE (Remote Job Entry)	Official
7/TCP,UDP	ECHO protocol	Official
9/TCP,UDP	DISCARD protocol	Official
11/TCP,UDP	SYSTAT protocol	Official
13/TCP,UDP	DAYTIME protocol	Official
15/TCP,UDP	NETSTAT protocol	Official
17/TCP,UDP	QOTD (Quote of the Day) protocol	Official
18/TCP,UDP	Message Send Protocol (MSP)	Official
19/TCP,UDP	CHARGEN (Character Generator) protocol	Official
20/TCP	FTP - data port	Official
21/TCP	FTP - control (command) port	Official
22/TCP,UDP	SSH (Secure Shell) - used for secure logins, file transfers (scp, sftp) and port forwarding	Official
23/TCP,UDP	TELNET protocol - unencrypted text communications	Official
25/TCP,UDP	SMTP - used for e-mail routing between mailservers E-mails	Official
26/TCP,UDP	RSFTP - A simple FTP-like protocol	Unofficial
35/TCP,UDP	Any private printer server protocol	Official
35/TCP,UDP	QMS Magicolor 2 printer server protocol	Unofficial
37/TCP,UDP	TIME protocol	Official
39/TCP,UDP	Resource Location Protocol[1] (RLP) - used for determining the location of higher level services from hosts on a network	Official
41/TCP,UDP	Graphics	Official
42/TCP,UDP	nameserver, ARPA Host Name Server Protocol	Official
42/TCP,UDP	WINS	Unofficial
43/TCP	WHOIS protocol	Official
49/TCP,UDP	TACACS Login Host protocol	Official
52/TCP,UDP	XNS (Xerox Network Services) Time Protocol	Official
53/TCP,UDP	DNS (Domain Name Server)	Official
54/TCP,UDP	XNS (Xerox Network Services) Clearinghouse	Official
56/TCP,UDP	XNS (Xerox Network Services) Authentication	Official
56/TCP,UDP	RAP (Route Access Protocol)[2]	Unofficial
57/TCP	MTP, Mail Transfer Protocol	Unofficial
58/TCP,UDP	XNS (Xerox Network Services) Mail	Official
67/UDP	BOOTP (BootStrap Protocol) server; also used by DHCP (Dynamic Host Configuration Protocol)	Official
68/UDP	BOOTP client; also used by DHCP	Official
69/UDP	TFTP (Trivial File Transfer Protocol)	Official
70/TCP	Gopher protocol	Official
79/TCP	Finger protocol	Official
80/TCP	HTTP (HyperText Transfer Protocol), default web server port	Official
81/TCP	Torpark - Onion routing ORport	Unofficial
82/UDP	Torpark - Control Port	Unofficial
83/TCP	MIT ML Device	Official
88/TCP	Kerberos - authenticating agent	Official
90/TCP,UDP	dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map	Official
90/TCP,UDP	Pointcast	Unofficial
101/TCP	NIC host name	Official
102/TCP	ISO-TSAP (Transport Service Access Point) Class 0 protocol[3]	Official
107/TCP	Remote TELNET Service[4] protocol	Official
109/TCP	POP2, Post Office Protocol, version 2	Official
110/TCP	POP3, Post Office Protocol, version 3	Official
111/TCP,UDP	Sun Remote Procedure Call protocol	Official
113/TCP	ident - old server identification system, still used by IRC servers to identify its users	Official
115/TCP	SFTP, Simple File Transfer Protocol	Official
117/TCP	UUCP Path Service	Official
118/TCP,UDP	SQL (Structured Query Language) Services	Official
119/TCP	NNTP (Network News Transfer Protocol) - used for retrieving newsgroups messages	Official
123/UDP	NTP (Network Time Protocol) - used for time synchronization	Official
135/TCP,UDP	DCE endpoint resolution	Official
135/TCP,UDP	Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service[5], used to to remotely manage services including DHCP server, DNS server and WINS	Unofficial
137/TCP,UDP	NetBIOS NetBIOS Name Service	Official
138/TCP,UDP	NetBIOS NetBIOS Datagram Service	Official
139/TCP,UDP	NetBIOS NetBIOS Session Service	Official
143/TCP,UDP	IMAP4 (Internet Message Access Protocol 4) - used for retrieving E-mails	Official
152/TCP,UDP	Background File Transfer Program (BFTP)[6]	Official
153/TCP,UDP	SGMP, Simple Gateway Monitoring Protocol	Official
156/TCP,UDP	SQL Service	Official
158/TCP,UDP	DMSP, Distributed Mail Service Protocol	Unofficial
161/TCP,UDP	SNMP (Simple Network Management Protocol)	Official
162/TCP,UDP	SNMPTRAP[7] protocol	Official
170/TCP	Print-srv, Network PostScript	Official
179/TCP	BGP (Border Gateway Protocol)	Official
194/TCP	IRC (Internet Relay Chat)	Official
201/TCP,UDP	AppleTalk Routing Maintenance	Official
209/TCP,UDP	The Quick Mail Transfer Protocol	Official
213/TCP,UDP	IPX	Official
218/TCP,UDP	MPP, Message Posting Protocol	Official
220/TCP,UDP	IMAP, Interactive Mail Access Protocol, version 3	Official
259/TCP,UDP	ESRO, Efficient Short Remote Operations	Official
264/TCP,UDP	BGMP, Border Gateway Multicast Protocol	Official
311/TCP	AppleShare Admin-Tool, Workgroup-Manager-Tool	Official
308/TCP	Novastor Online Backup	Official
318/TCP,UDP	PKIX TSP, Time Stamp Protocol	Official
323/TCP,UDP	IMMP, Internet Message Mapping Protocol	Unofficial
366/TCP,UDP	ODMR, On-Demand Mail Relay	Official
369/TCP,UDP	Rpc2portmap	Official
371/TCP,UDP	ClearCase albd	Official
383/TCP,UDP	HP data alarm manager	Official
384/TCP,UDP	A Remote Network Server System	Official
387/TCP,UDP	AURP, AppleTalk Update-based Routing Protocol	Official
389/TCP,UDP	LDAP (Lightweight Directory Access Protocol)	Official
401/TCP,UDP	UPS Uninterruptible Power Supply	Official
411/TCP	Direct Connect Hub port	Unofficial
412/TCP	Direct Connect Client-To-Client port	Unofficial
427/TCP,UDP	SLP (Service Location Protocol)	Official
443/TCP	HTTPS - HTTP Protocol over TLS/SSL (encrypted transmission)	Official
444/TCP,UDP	SNPP, Simple Network Paging Protocol	Official
445/TCP	Microsoft-DS Active Directory, Windows shares	Official
445/UDP	Microsoft-DS SMB file sharing	Official
464/TCP,UDP	Kerberos Change/Set password	Official
465/TCP	Cisco protocol	Unofficial
465/TCP	SMTP over SSL	Unofficial
475/TCP	tcpnethaspsrv (Hasp services, TCP/IP version)	Official
497/TCP	dantz backup service	Official
500/UDP	ISAKMP, IKE-Internet Key Exchange	Official
502/TCP,UDP	Modbus, Protocol	Unofficial
512/TCP	exec, Remote Process Execution	Official
512/UDP	comsat, together with biff	Official
513/TCP	Login	Official
513/UDP	Who	Official
514/TCP	rsh protocol - used to execute non-interactive commandline commands on a remote system	Official
514/UDP	syslog protocol - used for system logging	Official
515/TCP	Line Printer Daemon protocol - used in LPD printer servers	Official
517/UDP	Talk	Official
518/UDP	NTalk	Official
520/TCP	efs, extended file name server	Official
520/UDP	Routing - RIP	Official
524/TCP,UDP	NCP (NetWare Core Protocol) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.	Official
525/UDP	Timed, Timeserver	Official
530/TCP,UDP	RPC	Official
531/TCP,UDP	AOL Instant Messenger, IRC	Unofficial
532/TCP	netnews	Official
533/UDP	netwall, For Emergency Broadcasts	Official
540/TCP	UUCP (Unix-to-Unix Copy Protocol)	Official
542/TCP,UDP	commerce (Commerce Applications)	Official
543/TCP	klogin, Kerberos login	Official
544/TCP	kshell, Kerberos Remote shell	Official
546/TCP,UDP	DHCPv6 client	Official
547/TCP,UDP	DHCPv6 server	Official
548/TCP	AFP (Apple Filing Protocol)	Official
550/UDP	new-rwho, new-who	Official
554/TCP,UDP	RTSP (Real Time Streaming Protocol)	Official
556/TCP	Remotefs, RFS, rfs_server	Official
560/UDP	rmonitor, Remote Monitor	Official
561/UDP	monitor	Official
563/TCP,UDP	NNTP protocol over TLS/SSL (NNTPS)	Official
587/TCP	email message submission (SMTP) (RFC 2476)	Official
591/TCP	FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80)	Official
593/TCP,UDP	HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server	Official
604/TCP	TUNNEL profile[8], a protocol for BEEP peers to form an application layer tunnel	Official
631/TCP,UDP	IPP (Internet Printing Protocol)	Official
636/TCP,UDP	LDAP over SSL (encrypted transmission, also known as LDAPS)	Official
639/TCP,UDP	MSDP, Multicast Source Discovery Protocol	Official
646/TCP	LDP, Label Distribution Protocol, a routing protocol used in MPLS networks	Official
647/TCP	DHCP Failover protocol[9]	Official
648/TCP	RRP (Registry Registrar Protocol)[10]	Official
652/TCP	DTCP, Dynamic Tunnel Configuration Protocol	Unofficial
654/TCP	AODV (Ad-hoc On-demand Distance Vector)	Official
655/TCP	IEEE MMS (IEEE Media Management System)[11][12]	Official
657/TCP,UDP	IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM)[13] and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration	Official
665/TCP	sun-dr, Remote Dynamic Reconfiguration	Unofficial
666/UDP	Doom, First online first-person shooter	Official
674/TCP	ACAP (Application Configuration Access Protocol)	Official
691/TCP	MS Exchange Routing	Official
692/TCP	Hyperwave-ISP	Official
694/UDP	Linux-HA High availability Heartbeat port	Unofficial
695/TCP	IEEE-MMS-SSL (IEEE Media Management System over SSL)[14]	Official
698/UDP	OLSR (Optimized Link State Routing)	Official
699/TCP	Access Network	Official
700/TCP	EPP (Extensible Provisioning Protocol), a protocol for communication between domain name registries and registrars	Official
701/TCP	LMP (Link Management Protocol (Internet))[15], a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links	Official
702/TCP	IRIS[16][17] (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol)[18]	Official
706/TCP	SILC, Secure Internet Live Conferencing	Official
711/TCP	Cisco TDP, Tag Distribution Protocol[19][20][21] - being replaced by the MPLS Label Distribution Protocol[22]	Official
712/TCP	TBRPF, Topology Broadcast based on Reverse-Path Forwarding routing protocol	Official
712/UDP	Promise RAID Controller	Unofficial
720/TCP	SMQP, Simple Message Queue Protocol	Unofficial
749/TCP,UDP	kerberos-adm, Kerberos administration	Official
750/TCP	rfile	Official
750/UDP	loadav	Official
750/UDP	kerberos-iv, Kerberos version IV	Official
751/TCP,UDP	pump	Official
751/TCP,UDP	kerberos_master, Kerberos authentication	Unofficial
752/TCP	qrh	Official
752/UDP	qrh	Official
752/UDP	userreg_server, Kerberos Password (kpasswd) server	Unofficial
753/TCP	Reverse Routing Header (rrh)[23]	Official
753/UDP	Reverse Routing Header (rrh)	Official
753/UDP	passwd_server, Kerberos userreg server	Unofficial
754/TCP	tell send	Official
754/TCP	krb5_prop, Kerberos v5 slave propagation	Unofficial
754/UDP	tell send	Official
760/TCP,UDP	ns	Official
760/TCP,UDP	krbupdate [kreg], Kerberos registration	Unofficial
782/TCP	Conserver serial-console management server	Unofficial
829/TCP	CMP (Certificate Management Protocol)	Unofficial
860/TCP	iSCSI	Official
873/TCP	rsync file synchronisation protocol default port	Official
888/tcp	cddbp, CD DataBase (CDDB) protocol (CDDBP) - unassigned but widespread use	Unofficial
901/TCP	Samba Web Administration Tool (SWAT)	Unofficial
902/TCP	VMware Server Console[24]	Unofficial
904/TCP	VMware Server Alternate (if 902 is in use - i.e. SUSE linux)	Unofficial
911/TCP	Network Console on Acid (NCA) - local tty redirection over OpenSSH	Unofficial
981/TCP	SofaWare Technologies Remote HTTPS management for firewall devices running embedded Checkpoint Firewall-1 software	Unofficial
989/TCP,UDP	FTP Protocol (data) over TLS/SSL	Official
990/TCP,UDP	FTP Protocol (control) over TLS/SSL	Official
991/TCP,UDP	NAS (Netnews Administration System)	Official
992/TCP,UDP	TELNET protocol over TLS/SSL	Official
993/TCP	IMAP4 over SSL (encrypted transmission)	Official
995/TCP	POP3 over SSL (encrypted transmission)	Official
1023/TCP,UDP	IANA Reserved	Official

[edit] Ports 1024 to 49151

Only those ports that are commonly used are listed, refer to the IANA list of port assignments for the full list.

When investigating TCP traffic, be careful not to confuse the client and server ports. The client port is incremental, typically beginning at 1024 at boot time and wrapping at 4096. If the port you are investigating is in the lower part of this range, it may be a client port. Stateful firewalls identify the server port, but packet sniffers and stateless firewalls do not. For example, a packet sniffer showing a TCP packet with source port 1080 and destination port 1494 might be either the SOCKetS or Citrix Independent Computing Architecture (ICA) protocols. The only way to know for sure is to examine the initial TCP handshake.

With UDP, client port selection depends on the application and may be incremental, fixed to a nonsensical value, or fixed equal to the server port.

Port	Description	Status
1024/tcp,udp	IANA Reserved	Official
1025/tcp	NFS-or-IIS	Unofficial
1026/tcp	Often utilized by Microsoft DCOM services	Unofficial
1029/tcp	Often utilized by Microsoft DCOM services	Unofficial
1058/tcp,udp	nim, IBM AIX Network Installation Manager (NIM)	Official
1059/tcp,udp	nimreg, IBM AIX Network Installation Manager (NIM)	Official
1080/tcp	SOCKS proxy	Official
1098/tcp,udp	rmiactivation, RMI Activation	Official
1099/tcp,udp	rmiregistry, RMI Registry	Official
1109	IANA Reserved	Official
1109/tcp	Kerberos Post Office Protocol (KPOP)	Unofficial
1140/tcp,udp	AutoNOC Network Operations protocol	Official
1167/udp	phone, conference calling	Unofficial
1176/tcp	Perceptive Automation Indigo Home automation server	Official
1182/tcp,udp	AcceleNet Intelligent Transfer Protocol	Official
1194/tcp,udp	OpenVPN	Official
1198/tcp,udp	The cajo project Free dynamic transparent distributed computing in Java	Official
1200/tcp	scol, protocol used by SCOL 3D virtual worlds server to answer world name resolution client request[25]	Official
1200/udp	scol, protocol used by SCOL 3D virtual worlds server to answer world name resolution client request	Official
1200/udp	Steam Friends Applet	Unofficial
1214/tcp	Kazaa	Official
1223/tcp,udp	TGP, TrulyGlobal Protocol, also known as "The Gur Protocol" (named for Gur Kimchi of TrulyGlobal)	Official
1241/tcp,udp	Nessus Security Scanner	Official
1248/tcp	NSClient/NSClient++/NC_Net (Nagios)	Unofficial
1270/tcp,udp	Microsoft System Center Operations Manager (SCOM) (formerly Microsoft Operations Manager (MOM)) agent	Official
1311/tcp	Dell Open Manage Https Port	Unofficial
1313/tcp	Xbiim (Canvii server) Port	Unofficial
1337/tcp	WASTE Encrypted File Sharing Program	Unofficial
1352/tcp	IBM Lotus Notes/Domino Remote Procedure Call (RPC) protocol	Official
1387/tcp,udp	cadsi-lm, LMS International (formerly Computer Aided Design Software, Inc. (CADSI)) LM	Official
1414/tcp	IBM WebSphere MQ (formerly known as MQSeries) default	Official
1431/tcp	Reverse Gossip Transport Protocol (RGTP), used to access a General-purpose Reverse-Ordered Gossip Gathering System (GROGGS) bulletin board, such as that implemented on the Cambridge University's Phoenix system	Official
1433/tcp,udp	Microsoft SQL Server database management system Server	Official
1434/tcp,udp	Microsoft SQL Server database management system Monitor	Official
1494/tcp	Citrix XenApp Independent Computing Architecture (ICA) thin client protocol	Official
1512/tcp,udp	Microsoft Windows Internet Name Service (WINS)	Official
1521/tcp	nCube License Manager	Official
1521/tcp	Oracle database default listener, in future releases official port 2483	Unofficial
1524/tcp,udp	ingreslock, ingres	Official
1526/tcp	Oracle database common alternative for listener	Unofficial
1533/tcp	IBM Sametime IM - Virtual Places Chat	Official
1547/tcp,udp	Laplink	Official
1550	Gadu-Gadu (Direct Client-to-Client)	Unofficial
1581/udp	MIL STD 2045-47001 VMF	Official
1589/udp	Cisco VQP (VLAN Query Protocol) / VMPS	Unofficial
1645/tcp,udp	radius, RADIUS authentication protocol (default for Cisco and Juniper Networks RADIUS servers)	Unofficial
1646/tcp,udp	radacct, RADIUS accounting protocol (default for Cisco and Juniper Networks RADIUS servers)	Unofficial
1627	iSketch	Unofficial
1677/tcp,udp	Novell GroupWise clients in client/server access mode	Official
1701/udp	L2f, Layer 2 Forwarding Protocol & L2p, Layer 2 Tunneling Protocol	Official
1716/tcp	America's Army Massively multiplayer online role-playing game (MMORPG) default game port	Unofficial
1723/tcp,udp	Microsoft PPTP VPN	Official
1725/udp	Valve Steam Client	Unofficial
1755/tcp,udp	Microsoft Media Services (MMS, ms-streaming)	Official
1761/tcp,udp	cft-0	Official
1761/tcp	Novell Zenworks Remote Control utility	Unofficial
1762-1768/tcp,udp	cft-1 to cft-7	Official
1812/tcp,udp	radius, RADIUS authentication protocol	Official
1813/tcp,udp	radacct, RADIUS accounting protocol	Official
1863/tcp	MSNP (Microsoft Notification Protocol), used by the .NET Messenger Service and a number of Instant Messaging clients	Official
1900/udp	Microsoft SSDP Enables discovery of UPnP devices	Official
1935/tcp	Adobe Macromedia Flash Real Time Messaging Protocol (RTMP) "plain" protocol	Official
1970/tcp,udp	Danware NetOp Remote Control	Official
1971/tcp,udp	Danware NetOp School	Official
1972/tcp,udp	InterSystems Caché	Official
1975-77/udp	Cisco TCO (Documentation)	Official
1984/tcp	Big Brother - network monitoring tool	Official
1985/udp	Cisco HSRP	Official
1994/tcp,udp	Cisco STUN-SDLC (Serial Tunneling - Synchronous Data Link Control) protocol	Official
1998/tcp,udp	Cisco X.25 over TCP (XOT) service	Official
2000/tcp,udp	Cisco SCCP (Skinny)	Official
2002/tcp	Secure Access Control Server (ACS) for Windows	Unofficial
2030	Oracle Services for Microsoft Transaction Server	Unofficial
2031/tcp,udp	mobrien-chat - Mike O'Brien November 2004	Official
2049/udp	nfs, NFS Server	Official
2049/udp	shilp	Official
2053/udp	lot105-ds-upd Lot105 DSuper Updates	Official
2053/tcp	lot105-ds-upd Lot105 DSuper Updates	Official
2053/tcp	knetd Kerberos de-multiplexor	Unofficial
2056/udp	Civilization 4 multiplayer	Unofficial
2073/tcp,udp	DataReel Database	Official
2074/tcp,udp	Vertel VMF SA (i.e. App.. SpeakFreely)	Official
2082/tcp	Infowave Mobility Server	Official
2082/tcp	CPanel, default port	Unofficial
2083/tcp	Secure Radius Service (radsec)	Official
2083/tcp	CPanel default SSL port	Unofficial
2086/tcp	GNUnet	Official
2086/tcp	WebHost Manager default port	Unofficial
2087/tcp	WebHost Manager default SSL port	Unofficial
2095/tcp	CPanel default webmail port	Unofficial
2096/tcp	CPanel default SSL webmail port	Unofficial
2102/tcp,udp	zephyr-srv Project Athena Zephyr Notification Service server	Official
2103/tcp,udp	zephyr-clt Project Athena Zephyr Notification Service serv-hm connection	Official
2104/tcp,udp	zephyr-hm Project Athena Zephyr Notification Service hostmanager	Official
2105/tcp,udp	IBM MiniPay	Official
2105/tcp,udp	eklogin Kerberos encrypted remote login (rlogin)	Unofficial
2105/tcp,udp	zephyr-hm-srv Project Athena Zephyr Notification Service hm-serv connection (should use port 2102)	Unofficial
2161/tcp	APC Agent	Official
2181/tcp,udp	EForward-document transport system	Official
2190/udp	TiVoConnect Beacon	Unofficial
2200/udp	Tuxanci game server	Unofficial
2219/tcp,udp	NetIQ NCAP Protocol	Official
2220/tcp,udp	NetIQ End2End	Official
2222/tcp	DirectAdmin's default port	Unofficial
2222/udp	Microsoft Office OS X antipiracy network monitor [1]	Unofficial
2301/tcp	HP System Management Redirect to port 2381	Unofficial
2302/udp	ArmA multiplayer (default for game)	Unofficial
2302/udp	Halo: Combat Evolved multiplayer	Unofficial
2303/udp	ArmA multiplayer (default for server reporting) (default port for game +1)	Unofficial
2305/udp	ArmA multiplayer (default for VoN) (default port for game +3)	Unofficial
2369/tcp	Default port for BMC Software CONTROL-M/Server - Configuration Agent port number - though often changed during installation	Unofficial
2370/tcp	Default port for BMC Software CONTROL-M/Server - Port utilized to allow the CONTROL-M/Enterprise Manager to connect to the CONTROL-M/Server - though often changed during installation	Unofficial
2381/tcp	HP Insight Manager default port for webserver	Unofficial
2404/tcp	IEC 60870-5-104, used to send electric power telecontrol messages between two systems via directly connected data circuits	Official
2427/udp	Cisco MGCP	Official
2447/tcp,udp	ovwdb - OpenView Network Node Manager (NNM) daemon	Official
2483/tcp,udp	Oracle database listening port for unsecure client connections to the listener, replaces port 1521	Official
2484/tcp,udp	Oracle database listening port for SSL client connections to the listener	Official
2546/tcp,udp	Vytal Vault - Data Protection Services	Unofficial
2593/tcp,udp	RunUO - Ultima Online server	Unofficial
2598/tcp	new ICA - when Session Reliability is enabled, TCP port 2598 replaces port 1494	Unofficial
2612/tcp,udp	QPasa from MQSoftware	Official
2710/tcp	XBT Bittorrent Tracker	Unofficial
2710/udp	XBT Bittorrent Tracker experimental UDP tracker extension	Unofficial
2710/tcp	Knuddels.de	Unofficial
2735/tcp,udp	NetIQ Monitor Console	Official
2809/tcp	corbaloc:iiop URL, per the CORBA 3.0.3 specification	Official
2809/tcp	IBM WebSphere Application Server (WAS) Bootstrap/rmi default port	Unofficial
2809/udp	corbaloc:iiop URL, per the CORBA 3.0.3 specification.	Official
2944/udp	Megaco Text H.248	Unofficial
2945/udp	Megaco Binary (ASN.1) H.248	Unofficial
2948/tcp,udp	WAP-push Multimedia Messaging Service (MMS)	Official
2949/tcp,udp	WAP-pushsecure Multimedia Messaging Service (MMS)	Official
2967/tcp	Symantec AntiVirus Corporate Edition	Unofficial
3000/tcp	Miralix License server	Unofficial
3000/udp	Distributed Interactive Simulation (DIS), modifiable default port	Unofficial
3001/tcp	Miralix Phone Monitor	Unofficial
3002/tcp	Miralix CSTA	Unofficial
3003/tcp	Miralix GreenBox API	Unofficial
3004/tcp	Miralix InfoLink	Unofficial
3006/tcp	Miralix SMS Client Connector	Unofficial
3007/tcp	Miralix OM Server	Unofficial
3025/tcp	netpd.org	Unofficial
3050/tcp,udp	gds_db (Interbase/Firebird)	Official
3074/tcp,udp	Xbox Live	Official
3128/tcp	HTTP used by web caches and the default port for the Squid cache	Unofficial
3260/tcp,udp	iSCSI target	Official
3268/tcp,udp	msft-gc, Microsoft Global Catalog (LDAP service which contains data from Active Directory forests)	Official
3269/tcp,udp	msft-gc-ssl, Microsoft Global Catalog over SSL (similar to port 3268, LDAP over SSL)	Official
3283/tcp	Apple Remote Desktop	Unofficial
3300/tcp	TripleA game server	Unofficial
3305/tcp,udp	odette-ftp, Odette File Transfer Protocol (OFTP)	Official
3306/tcp,udp	MySQL Database system	Official
3333/tcp	Network Caller ID server	Unofficial
3386/tcp,udp	GTP' 3GPP GSM/UMTS CDR logging protocol	Official
3389/tcp	Microsoft Terminal Server (RDP) officially registered as Windows Based Terminal (WBT)	Unofficial
3396/tcp,udp	Novell NDPS Printer Agent	Official
3689/tcp,udp	DAAP Digital Audio Access Protocol used by Apple’s iTunes	Official
3690/tcp,udp	Subversion version control system	Official
3702/tcp,udp	Web Services Dynamic Discovery (WS-Discovery), used by various components of Windows Vista	Official
3724/tcp,udp	World of Warcraft Online gaming MMORPG	Official
3784/tcp,udp	Ventrilo VoIP program used by Ventrilo	Unofficial
3785/udp	Ventrilo VoIP program used by Ventrilo	Unofficial
3868 tcp	Diameter base protocol	Official
3872/tcp	Oracle Management Remote Agent	Unofficial
3899/tcp	Remote Administrator	Unofficial
3900/tcp	Unidata UDT OS udt_os	Official
3945/tcp,udp	EMCADS server service port, a Giritech product used by G/On	Official
4000/tcp,udp	Diablo II game	Unofficial
4007/tcp	PrintBuzzer printer monitoring socket server	Unofficial
4089/tcp,udp	OpenCORE Remote Control Service	Official
4093/tcp,udp	PxPlus Client server interface ProvideX	Official
4096/tcp,udp	Bridge-Relay Element ASCOM	Official
4100	WatchGuard Authentication Applet - default port	Unofficial
4111/tcp,udp	Xgrid	Official
4111/tcp	Microsoft Office SharePoint Portal Server - default administration port	Unofficial
4125/tcp	Remote Web Workplace - default administration port	Unofficial
4226/tcp,udp	Aleph One (computer game)	Unofficial
4224/tcp	Cisco CDP Cisco discovery Protocol	Unofficial
4569/udp	Inter-Asterisk eXchange	Unofficial
4662/tcp,udp	OrbitNet Message Service	Official
4662/tcp	port often used by eMule	Unofficial
4664/tcp	Google Desktop Search	Unofficial
4672/udp	eMule - port often used	Unofficial
4747/tcp	Apprentice	Unofficial
4750/tcp	BladeLogic Agent	Unofficial
4894/tcp,udp	LysKOM Protocol A	Official
4899/tcp,udp	Radmin remote administration tool (program sometimes used as a Trojan horse)	Official
5000/tcp	commplex-main	Official
5000/tcp	UPnP - Windows network device interoperability	Unofficial
5000/tcp,udp	VTun - VPN Software	Unofficial
5001/tcp,udp	Iperf (Tool for measuring TCP and UDP bandwidth performance)	Unofficial
5001/tcp	Slingbox and Slingplayer	Unofficial
5003/tcp,udp	FileMaker Filemaker Pro	Official
5004/tcp,udp	RTP (Real-time Transport Protocol) media data	Official
5005/tcp,udp	RTP (Real-time Transport Protocol) control protocol	Official
5031/tcp,udp	AVM CAPI-over-TCP (ISDN over Ethernet tunneling)	Unofficial
5050/tcp	Yahoo! Messenger	Unofficial
5051/tcp	ita-agent Symantec Intruder Alert	Official
5060/tcp,udp	Session Initiation Protocol (SIP)	Official
5061/tcp	Session Initiation Protocol (SIP) over TLS	Official
5093/udp	SPSS License Administrator (SPSS)	Unofficial
5104/tcp	IBM NetCOOL / IMPACT HTTP Service	Unofficial
5106/tcp	A-Talk Common connection	Unofficial
5107/tcp	A-Talk Remote server connection	Unofficial
5110/tcp	ProRat Server	Unofficial
5121/tcp	Neverwinter Nights	Unofficial
5176/tcp	ConsoleWorks default UI interface	Unofficial
5190/tcp	ICQ and AOL Instant Messenger	Official
5222/tcp,udp	XMPP/Jabber|Google Talk - client connection	Official
5223/tcp	XMPP/Jabber - default port for SSL Client Connection	Unofficial
5269/tcp,udp	XMPP/Jabber - server connection	Official
5351/tcp,udp	NAT Port Mapping Protocol - client-requested configuration for inbound connections through network address translators	Official
5353/tcp,udp	mDNS - multicastDNS	Official
5355/udp,tcp	LLMNR - Link-Local Multicast Name Resolution, allows hosts to perform name resolution for hosts on the same local link (only provided by Windows Vista and Server 2008)	Official
5402/tcp,udp	mftp, Stratacache OmniCast content delivery system MFTP file sharing protocol	Official
5405/tcp,udp	NetSupport	Official
5421/tcp,udp	Net Support 2	Official
5432/tcp,udp	PostgreSQL database system	Official
5445/udp	Cisco Unified Video Advantage	Unofficial
5495/tcp	Applix TM1 Admin server	Unofficial
5498/tcp	Hotline tracker server connection	Unofficial
5499/udp	Hotline tracker server discovery	Unofficial
5500/tcp	VNC remote desktop protocol - for incoming listening viewer, Hotline control connection	Unofficial
5501/tcp	Hotline file transfer connection	Unofficial
5517/tcp	Setiqueue Proxy server client for SETI@Home project	Unofficial
5555/tcp	Freeciv multiplay port for versions up to 2.0, Hewlett Packard Data Protector, SAP	Unofficial
5556/tcp,udp	Freeciv multiplay port	Official
5631/tcp,udp	pcANYWHEREdata, Symantec pcAnywhere	Official
5632/tcp,udp	pcANYWHEREstat, Symantec pcAnywhere	Official
5666/tcp	NRPE (Nagios)	Unofficial
5667/tcp	NSCA (Nagios)	Unofficial
5800/tcp	VNC remote desktop protocol - for use over HTTP	Unofficial
5814/tcp,udp	Hewlett-Packard Support Automation (HP OpenView Self-Healing Services)	Official
5900/tcp,udp	VNC remote desktop protocol (used by ARD)	Official
5938/tcp,udp	TeamViewer remote desktop protocol	Unofficial
5984/tcp,udp	CouchDB database server	Official
6000/tcp	X11 - used between an X client and server over the network	Official
6001/udp	X11 - used between an X client and server over the network	Official
6005/tcp	Default port for BMC Software CONTROL-M/Server - Socket Port number used for communication between CONTROL-M processes - though often changed during installation	Unofficial
6050/tcp	Brightstor Arcserve Backup	Unofficial
6051/tcp	Brightstor Arcserve Backup	Unofficial
6100/tcp	Vizrt System	Unofficial
6110/tcp,udp	softcm HP SoftBench CM	Official
6111/tcp,udp	spc HP SoftBench Sub-Process Control	Official
6112/tcp,udp	"dtspcd" - a network daemon that accepts requests from clients to execute commands and launch applications remotely	Official
6112/tcp	Blizzard's Battle.net gaming service, ArenaNet gaming service	Unofficial
6129/tcp	Dameware Remote Control	Unofficial
6257/udp	WinMX (see also 6699)	Unofficial
6346/tcp,udp	gnutella-svc, default Gnutella port (FrostWire, Limewire, Shareaza, etc.)	Official
6347/tcp,udp	gnutella-rtr, alternative Gnutella port	Official
6444/tcp,udp	Sun Grid Engine - Qmaster Service	Official
6445/tcp,udp	Sun Grid Engine - Execution Service	Official
6502/tcp,udp	Danware Data NetOp Remote Control	Unofficial
6522/tcp	Gobby (and other libobby-based software)	Unofficial
6543/udp	Jetnet - default port that the Paradigm Research & Development Jetnet protocol communicates on	Unofficial
6566/tcp	SANE (Scanner Access Now Easy) - SANE network scanner daemon	Unofficial
6600/tcp	Music Playing Daemon (MPD)	Unofficial
6619/tcp,udp	odette-ftps, Odette File Transfer Protocol (OFTP) over TLS/SSL	Official
6665-6669/tcp	Internet Relay Chat	Official
6679/tcp	IRC SSL (Secure Internet Relay Chat) - port often used	Unofficial
6697/tcp	IRC SSL (Secure Internet Relay Chat) - port often used	Unofficial
6699/tcp	WinMX (see also 6257)	Unofficial
6771/udp	Polycom server broadcast	Unofficial
6881-6887/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
6888/tcp,udp	MUSE	Official
6888/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
6889-6890/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
6891-6900/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
6891-6900/tcp,udp	Windows Live Messenger (File transfer)	Unofficial
6901/tcp,udp	Windows Live Messenger (Voice)	Unofficial
6901/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
6902-6968/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
6969/tcp,udp	acmsoda	Official
6969/tcp	BitTorrent tracker port	Unofficial
6970-6999/tcp,udp	BitTorrent part of full range of ports used most often	Unofficial
7000/tcp	Default port for Azureus's built in HTTPS Bittorrent Tracker	Unofficial
7001/tcp	Default port for BEA WebLogic Server's HTTP server - though often changed during installation	Unofficial
7002/tcp	Default port for BEA WebLogic Server's HTTPS server - though often changed during installation	Unofficial
7005/tcp,udp	Default port for BMC Software CONTROL-M/Server and CONTROL-M/Agent's - Agent to Server port though often changed during installation	Unofficial
7006/tcp,udp	Default port for BMC Software CONTROL-M/Server and CONTROL-M/Agent's - Server to Agent port though often changed during installation	Unofficial
7010/tcp	Default port for Cisco AON AMC (AON Management Console) [2]	Unofficial
7025/tcp	Zimbra - lmtp [mailbox] - local mail delivery	Unofficial
7047/tcp	Zimbra - conversion server	Unofficial
7133/tcp	Enemy Territory: Quake Wars	Unofficial
7171/tcp	Tibia	Unofficial
7306/tcp	Zimbra - mysql [mailbox]	Unofficial
7307/tcp	Zimbra - mysql [logger] - logger	Unofficial
7312/udp	Sibelius License Server port	Unofficial
7670/tcp	BrettspielWelt BSW Boardgame Portal	Unofficial
7777/tcp	Default port used by Windows backdoor program tini.exe	Unofficial
7831/tcp	Default port used by Smartlaunch Internet Cafe Administration[26] software	Unofficial
8000/tcp,udp	iRDMI - often mistakenly used instead of port 8080	Official
8000/tcp	Common port used for internet radio streams such as those using SHOUTcast	Unofficial
8002/tcp	Cisco Systems Unified Call Manager Intercluster Port	Unofficial
8008/tcp	HTTP Alternate	Official
8008/tcp	IBM HTTP Server default administration port	Unofficial
8010/tcp	XMPP/Jabber File transfers	Unofficial
8074/tcp	Gadu-Gadu	Unofficial
8080/tcp	HTTP Alternate (http_alt) - commonly used for web proxy and caching server, or for running a web server as a non-root user	Official
8080/tcp	Apache Tomcat	Unofficial
8086/tcp	HELM Web Host Automation Windows Control Panel	Unofficial
8086/tcp	Kaspersky AV Control Center TCP Port	Unofficial
8087/tcp	Hosting Accelerator Control Panel	Unofficial
8087/udp	Kaspersky AV Control Center UDP Port	Unofficial
8090/tcp	Another HTTP Alternate (http_alt_alt) - used as an alternative to port 8080	Unofficial
8118/tcp	Privoxy web proxy - advertisements-filtering web proxy	Official
8087/tcp	SW Soft Plesk Control Panel	Unofficial
8200/tcp	GoToMyPC	Unofficial
8220/tcp	Bloomberg	Unofficial
8222	VMware Server Management User Interface (insecure web interface)[27]. See also, port 8333	Unofficial
8291/tcp	Winbox - Default port on a MikroTik RouterOS for a Windows application used to administer MikroTik RouterOS	Unofficial
8294/tcp	Bloomberg	Unofficial
8333	VMware Server Management User Interface (secure web interface)[28]. See also, port 8222	Unofficial
8400/tcp,udp	cvp, Commvault Unified Data Management	Official
8443/tcp	SW Soft Plesk Control Panel	Unofficial
8500/tcp	ColdFusion Macromedia/Adobe ColdFusion default Webserver port	Unofficial
8501/udp	Duke Nukem 3D - Default Online Port	Unofficial
8767/udp	TeamSpeak - Default UDP Port	Unofficial
8880/udp	cddbp-alt, CD DataBase (CDDB) protocol (CDDBP) - alternate	Official
8880/tcp	cddbp-alt, CD DataBase (CDDB) protocol (CDDBP) - alternate	Official
8880/tcp	WebSphere Application Server SOAP connector default port	Unofficial
8881/tcp	Atlasz Informatics Research Ltd Secure Application Server	Unofficial
8882/tcp	Atlasz Informatics Research Ltd Secure Application Server	Unofficial
8888/tcp,udp	NewsEDGE server	Official
8888/tcp	Sun Answerbook dwhttpd server (deprecated by docs.sun.com)	Unofficial
8888/tcp	GNUmp3d HTTP music streaming and web interface port	Unofficial
8888/tcp	LoLo Catcher HTTP web interface port (www.optiform.com)	Unofficial
9000/tcp	Buffalo LinkSystem web access	Unofficial
9000/tcp	DBGp	Unofficial
9000/udp	UDPCast	Unofficial
9001	cisco-xremote router configuration	Unofficial
9001	Tor network default port	Unofficial
9001/tcp	DBGp Proxy	Unofficial
9009/tcp,udp	Pichat Server - Peer to peer chat software	Official
9043/tcp	WebSphere Application Server Administration Console secure port	Unofficial
9060/tcp	WebSphere Application Server Administration Console	Unofficial
9080/udp	glrpc, Groove Collaboration software GLRPC port	Official
9080/tcp	glrpc, Groove Collaboration software GLRPC port	Official
9080/tcp	WebSphere Application Server Http Transport (port 1) default	Unofficial
9090/tcp	Openfire Administration Console	Unofficial
9100/tcp	Jetdirect HP Print Services	Official
9110/udp	SSMP Message protocol	Unofficial
9101	Bacula Director	Official
9102	Bacula File Daemon	Official
9103	Bacula Storage Daemon	Official
9119/tcp,udp	MXit Instant Messenger	Official
9418/tcp,udp	git, Git pack transfer service	Official
9535/tcp	mngsuite, LANDesk Management Suite Remote Control	Official
9535/tcp	BBOS001, IBM Websphere Application Server (WAS) High Avail Mgr Com Port	Unofficial
9443/tcp	WebSphere Application Server Http Transport (port 2) default	Unofficial
9535/udp	mngsuite, LANDesk Management Suite Remote Control	Official
9800/tcp,udp	WebDAV Source Port	Official
9800	WebCT e-learning portal	Unofficial
9999	Hydranode - edonkey2000 TELNET control port	Unofficial
9999/tcp	Lantronix UDS-10/UDS100[29] RS-485 to Ethernet Converter TELNET control port	Unofficial
9999	Urchin Web Analytics	Unofficial
10000	Webmin - web based Linux admin tool	Unofficial
10000	BackupExec	Unofficial
10001/tcp	Lantronix UDS-10/UDS100[30] RS-485 to Ethernet Converter default port	Unofficial
10008/tcp,udp	Octopus Multiplexer, primary port for the CROMP protocol, which provides a platform-independent means for communication of objects across a network	Official
10017	AIX,NeXT, HPUX - rexd daemon control port	Unofficial
10024/tcp	Zimbra - smtp [mta] - to amavis from postfix	Unofficial
10025/tcp	Ximbra - smtp [mta] - back to postfix from amavis	Unofficial
10050/tcp,udp	Zabbix-Agent	Official
10051/tcp,udp	Zabbix-Trapper	Official
10113/tcp,udp	NetIQ Endpoint	Official
10114/tcp,udp	NetIQ Qcheck	Official
10115/tcp,udp	NetIQEndpoint	Official
10116/tcp,udp	NetIQ VoIP Assessor	Official
10200/tcp	FRISK Software International's fpscand virus scanning daemon for Unix platforms [3]	Unofficial
10200-10204/tcp	FRISK Software International's f-protd virus scanning daemon for Unix platforms [4]	Unofficial
10308	Lock-on: Modarn Air Combat	Unofficial
10480	SWAT 4 Dedicated Server	Unofficial
11211	memcached	Unofficial
11235	Savage:Battle for Newerth Server Hosting	Unofficial
11294	Blood Quest Online Server	Unofficial
11371	OpenPGP HTTP Keyserver	Official
11576	IPStor Server management communication	Unofficial
12035/udp	Linden Lab viewer to sim	Unofficial
12345	NetBus - remote administration tool (often Trojan horse). Also used by NetBuster. Little Fighter 2 (TCP).	Unofficial
12975/tcp	LogMeIn Hamachi (VPN tunnel software; also port 32976) - used to connect to Mediation Server (bibi.hamachi.cc); will attempt to use SSL (TCP port 443) if both 12975 & 32976 fail to connect	Unofficial
13000-13050/udp	Linden Lab viewer to sim	Unofficial
13720/tcp,udp	Symantec NetBackup - bprd (formerly VERITAS)	Official
13721/tcp,udp	Symantec NetBackup - bpdbm (formerly VERITAS)	Official
13724/tcp,udp	Symantec Network Utility - vnetd (formerly VERITAS)	Official
13782/tcp,udp	Symantec NetBackup - bpcd (formerly VERITAS)	Official
13783/tcp,udp	Symantec VOPIED protocol (formerly VERITAS)	Official
13785/tcp,udp	Symantec NetBackup Database - nbdb (formerly VERITAS)	Official
13786/tcp,udp	Symantec nomdb (formerly VERITAS)	Official
14567/udp	Battlefield 1942 and mods	Unofficial
15000/tcp	psyBNC	Unofficial
15000/tcp	Wesnoth	Unofficial
15000/tcp	hydap, Hypack Hydrographic Software Packages Data Acquisition	Official
15000/udp	hydap, Hypack Hydrographic Software Packages Data Acquisition	Official
15567/udp	Battlefield Vietnam and mods	Unofficial
15345/tcp,udp	XPilot Contact Port	Official
16000/tcp	shroudBNC	Unofficial
16080/tcp	Mac OS X Server performance cache for HTTP[31]	Unofficial
16384/udp	Iron Mountain Digital - online backup	Unofficial
16567/udp	Battlefield 2 and mods	Unofficial
19226/tcp	Panda Software AdminSecure Communication Agent	Unofficial
19638/tcp	Ensim Control Panel	Unofficial
19813/tcp	4D database Client Server Communication	Unofficial
20000	DNP (Distributed Network Protocol), a protocol used in SCADA systems between communicating RTU's and IED's	Official
20000	Usermin, web based user tool	Unofficial
20720/tcp	Symantec i3 Web GUI server	Unofficial
22347/tcp,udp	WibuKey, default port used for communications between the WibuKey Network Server and the WibuKey run-time client for the WIBU-SYSTEMS AG Software protection system	Official
22350/tcp,udp	CodeMeter, default port used for communications with the CodeMeter Server for the WIBU-SYSTEMS AG Software protection system	Official
24554/tcp,udp	BINKP, Fidonet mail transfers over TCP/IP	Official
24800	Synergy: keyboard/mouse sharing software	Unofficial
24842	StepMania: Online: Dance Dance Revolution Simulator	Unofficial
25999/tcp	Xfire	Unofficial
26000/tcp,udp	id Software's Quake server	Official
26000/tcp	CCP's EVE Online Online gaming MMORPG	Unofficial
27000/udp	(through 27006) id Software's QuakeWorld master server	Unofficial
27010	Half-Life and its mods, such as Counter-Strike	Unofficial
27015	Half-Life and its mods, such as Counter-Strike	Unofficial
27374	Sub7's default port. Most script kiddies do not change the default port.	Unofficial
27500/udp	(through 27900) id Software's QuakeWorld	Unofficial
27888/udp	Kaillera server	Unofficial
27900	(through 27901) Nintendo Wi-Fi Connection	Unofficial
27901/udp	(through 27910) id Software's Quake II master server	Unofficial
27960/udp	(through 27969) Activision's Enemy Territory and id Software's Quake III Arena and Quake III and some ioquake3 derived games	Unofficial
28910	Nintendo Wi-Fi Connection	Unofficial
28960	Call of Duty 2 Common Call of Duty 2 port - (PC Version)	Unofficial
28961	Call of Duty 4: Modern Warfare Common Call of Duty 4 port - (PC Version)	Unofficial
29900	(through 29901) Nintendo Wi-Fi Connection	Unofficial
29920	Nintendo Wi-Fi Connection	Unofficial
30000	Pokemon Netbattle	Unofficial
30564/tcp	Multiplicity: keyboard/mouse/clipboard sharing software	Unofficial
31337/tcp	Back Orifice - remote administration tool (often Trojan horse)	Unofficial
31337/tcp	xc0r3 - xc0r3 security antivir port	Unofficial
31415	ThoughtSignal - Server Communication Service (often Informational)	Unofficial
31456-31458/tcp	TetriNET ports (in order: IRC, game, and spectating)	Unofficial
32245/tcp	MMTSG-mutualed over MMT (encrypted transmission)	Unofficial
32976/tcp	LogMeIn Hamachi (VPN tunnel software; also port 12975) - used to connect to Mediation Server (bibi.hamachi.cc); will attempt to use SSL (TCP port 443) if both 12975 & 32976 fail to connect	Unofficial
33434/tcp,upd	traceroute	Official
34443	Linksys PSUS4 print server	Unofficial
37777/tcp	Digital Video Recorder hardware	Unofficial
36963	Counter Strike 2D multiplayer port (2D clone of popular CounterStrike computer game)	Unofficial
40000/tcp,upd	SafetyNET p Real-time Industrial Ethernet protocol	Official
43594-43595/tcp	RuneScape	Unofficial
47808/tcp,upd	BACnet Building Automation and Control Networks	Official
49151	IANA Reserved	Official