Dell iDRAC 6 IP port requirements

I got a "connection failed" error if i opened the console redirection within the Integrated Dell Remote Access Controller 6 (iDRAC6)  of a customers server. Two days ago i was able to get the connection.


Solution simple: The firewall between me and the server was turned on yesterday, so that the port for the redirection got blocked: 


If you check the dell manuals (support.dell.com) you'll find these default ports used by the iDRAC:

• 80 (HTTP) 
• 443 (HTTPS)
• 22 (SSH)
• 23 (Telnet)
• 161(SNMP)
•  5900, 5901 (Console Redirection)