I start this discussion as I think I'm experiencing something really strange with CS-MARS 4.3.1 (build 2600) and Cisco IPS 5.1(6).
I upgraded today our MARS box from 4.2.8 to 4.3.1. And a bit later, I decided to migrate one of our IPS from 4.1 to 5.1.
After all the upgrades, I deleted the old IDS 4.1 from MARS and recreated it. But I can't have MARS to communicate with the IPS! From the MARS box I can "telnet ... 443", I have a response, but MARS complains again and again of being not able to contact the IPS. "Try a telnet ... 443 from the MARS appliance to check if IP connectivity is present" is the message reported by the "View Error" after a "test connectivity" has been issued.
The problem is that I need that first connection to make MARS subscribes to the IPS in order to receive the logs.
I made a try with a 5.1 IPS already present before the upgrade : same result "Can't connect". But as the MARS box subscribed previously to the IPS, the logs are arriving.
Does someone else have this strange behaviour ?