If you want to access an iLO behind a firewall, there are some TCP ports that need to be opened on the firewall to allow all iLO traffic to flow through. Here is a list of the default ports used by iLO, but these can be modified on iLO’s Administration… Access… Services… tab.

ILO FUNCTION SOCKET TYPE PORT NUMBER
———————- ———– ———–
Secure Shell (SSH) TCP 22
Remote Console/Telnet TCP 23
Web Server Non-SSL TCP 80
Web Server SSL TCP 443
Terminal Services TCP 3389
Virtual Media TCP 17988
Shared Remote Console TCP 9300
Console Replay TCP 17990
Raw Serial Data TCP 3002