TCP/UDP Port Numbers

TCP/UDP Port Numbers

I have compiled some of the very useful list of port numbers (unofficial) used by server administrators. If you are managing a server under VPS or dedicated, this could be more than helpful. You can also refer to Official Port Number&Assignments from IANA website or even a TCP/UDP ports from wikipedia.

Port 21 –>TCP –>FTP (File Transfer Protocol)

Port 22 –>TCP/UDP –>SSH (ssh,scp copy or sftp)

Port 23 –>TCP/UDP –>Telnet

Port 25 –>TCP/UDP –>SMTP (for sending outgoing emails)

Port 43 –>TCP –>WHOIS function

Port 53 –>TCP/UDP –>DNS Server (DNS lookup uses UDP and Zone transfers use TCP)

Port 70 –>TCP –>Gopher Protocol

Port 79 –>TCP –>Finger protocol

Port 110 –>TCP –>POP3 (for receiving email)

Port 119 –>TCP –>NNTP (Network News Transfer Protocol)

Port 143 –>TCP/UDP –>IMAP4 Protocol (for email service)

Port 194 –>TCP –>IRC

Port 389 –>TCP/UDP –>LDAP (light weight directory access)

Port 443 –>TCP –>Secure HTTP over SSL (https)

Port 465 –>TCP –>Secure SMTP (email) using SSL

Port 990 –>TCP/UDP –>Secure FTP using SSL

Port 993 –>TCP –>Secure IMAP protocol over SSL (for emails)

Port 1433 –>TCP/UDP –>Microsoft SQL server port

Port 2082 –>TCP –>CPanel default port

Port 2083 –>TCP –>CPanel over SSL

Port 2086 –>TCP –>CPanel Webhost Manager (default)

Port 2087 –>TCP –>CPanel Webhost Manager (with https)

Port 2095 –>TCP –>CPanel Webmail

Port 2096 –>TCP –>Cpanel secure webmail over SSL

Port 2222 –>TCP –>DirectAdmin Server Control Panel

Port 3306 –>TCP/UDP –>MySQL Database Server

Port 4643 –>TCP –>Virtuosso Power Panel

Port 5432 –>TCP –>PostgreSQL Database Server

Port 8080 –>TCP –>HTTP port (alternative one for port 80)

Port 8087 –>TCP –>Plesk Control Panel Port (default)

Port 8443 –>TCP –>Plesk Server Control Panel over SSL

Port 9999 –>TCP –>Urchin Web Analytics

Port 10000 –>TCP –>Webmin Server Control Panel

Port 19638 –>TCP –>Ensim Server Control Panel 

Make sure you dont block certain important ports using firewall.