A reference list of standard ports:
Standard port for active FTP.
Note that except for port 21 you need a range of higher ports between 1024 and 65535 to be opened. (In Xandr we suggest 40000–41000, as our hardware is already configured to use these ports.)
(Secure Shell) Used for secure logins, file transfers (SCP, SFTP), and port forwarding.
(Simple Mail Transfer Protocol)
80, 8080, 8000
Standard ports for HTTP access. TCP port 8000 is usually used for HTTP access or HTTP tunneling. HTTP traffic to ports above 8000 should be funneled through LB pools. (See also Configuring Local Load Balancing).
SNMP, SNMPTRAP (Simple Network Management Protocol).
(Lightweight Directory Access Protocol)
(Hypertext Transfer Protocol over TLS/SS)
Java RMI registry
Note that opening a MySQL port to the world is a potential security hole. We suggest specifying exact source IPs.
One of the most popular ports for HTTP proxy, although not the only one.
(Netscape Web Server Admin Management)