5230 software update targets and ports

I have a 5230 in 2.6.1.2 version of NBU

I am getting the message "Failed to get correct update info from NBU appliance software update center,please contact Symantec support." in web console and CLISH when I run

MediaServer>Manage>Software>List AvailablePatch
- [Error] Failed to get correct update info from NBU appliance software update center,please contact Symantec support.
 

Im not sure if there is a problem with appliance itself, or the internet connection, CallHome works perfectly, but I cannot check the available software updates.

Finding a working around I was looking for the ports and urls that appliance use to connect to software update center, but I couldnt find anything, has anyone ad this information would be helpful.