Here are the ports to allow through the firewall for various DRAC remote access options.
22* Secure Shell (SSH) 23* Telnet 80* HTTP 161 SNMP Agent 443* HTTPS 623 RMCP/RMCP+ 3668* Virtual Media server 3669* Virtual Media Secure Service 5900* Console Redirection keyboard/mouse 5901* Console Redirection video
The default-