High latency problem
Occasionally our Watchguard firewall's ( M470 firmware 12.7.2) responses are really slow; e.g. ping replies are over 2000ms for an extended period of time (usually they are around 40ms). Even our connection to FSM drops sometimes. There are no issues at the network level.
If the cpu utilization, free memory doesn't change during this time, and if it is not a bandwidth issue, what can it be?
The only policy I suspect is our DNS proxy, but cpu utilization always stays under 10% so firewall doesnt seem to be overloaded.