TCP ports opened on firewall for Dell Remote Access Card – DRAC.

The Dell Remote Access Card (DRAC) communicates via the following ports:

22 Secure Shell, SSH
23 Telnet
80 http
443 https
161 SNMP
3668 Virtual Media Server
5900 Console Redirection
5901 Console Redirection

If you have a firewall in between you and the server, ensure that you have the above ports opened.