We recently migrated the VPN tunnels from a remote site to a WatchGuard device to our Sophos UTM. The remote site is still using a WatchGuard XTM and the tunnels come up without error. Then after a varying number of days, some of the subnets in the tunnel become inaccessible. Restarting the tunnel on the Sophos bring the connection back up.
The tunnels usually stay up for a couple of days, then 2-12 days later, something goes wrong. Looking at both the Sophos and WatchGuard logs, I am not seeing anything round the time the issues occur.
I found another post that mentions disabling PFS, which I will do, but I would like to know if anyone else has had issues between Sophos UTM and WatchGuard XTM recently?
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