Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

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Site to site vpn issue with watchguard

A Site2Site Vpn between Sophos XG 17.5.9MR9 and Watchguard XTM25 v 11.10.1.8477570

The XG side has 3 vlans configured in the tunnel , Watchguard side one , as per picture below

 

Problem:

Randomly one of the vlan form the XG side , mostly the same though , is not able to reach the remote site anymore .

The "tunnel Status" is always green . Other vlans still continue to work flawlessly . On each side we couldn't find any errors reported .

Resetting the vpn obviously temporarily solve the issue 

 

Thanks

 



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