Network services

Information about identifying and securing network services with open communication ports is shown.

Ports usage
The following table describes known port usage on the AIX® operating system.
Identifying network services with open communication ports
Client-server applications open communication ports on the server, allowing the applications to listen to incoming client requests.
Identifying TCP and UDP sockets
Use the lsof command, a variant of the netstat -af command to identify TCP sockets that are in the LISTEN state and idle UDP sockets that are waiting for data to arrive.

Parent topic: Securing the network