We are in the midst of migrating all our firewalls to 4.6. However I have a now-recurring issue on one of my last 4.5 (amd64) firewalls that I'm having a hard time understanding. It's happening right now so if there is something I can do in this state to show what's going on, i'd like to do it.
Current this firewall performs duty for inbound customer traffic for some game clients (mmo style) and for firewall enforcement between various vlans on the inside. The first time this happened I thought it was just a fluke. Current state of the system: The system won't let me log in via ssh. I can make a tcp connection via telnet so I know that at least something is listening on the port, but nothing I try will get the system to prompt me for authentication credentials. No love on the terminal either. Because our datacenter uses KVM and the keyboard switches via USB, it won't detect the keyboard being plugged in. However I can get video and it was left logged in with top running, and it appears to be frozen. Just like the previous time the event was preceeded by increased complaints from our customers that game lag was very high. I know this all seems very vague, but I am totally frustrated here. We don't move a lot of traffic, 40mbps at the most. It still continues to firewall traffic without too much issue. Last time this happened, when I rebooted I couldn't find anything in the logs to suggest an error of any type. Could I be running out of resources somewhere? Thanks for your insight, Geoff Sweet
