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IPSec VPN regularly fails and requires you to disconnect and reconnect VPN

Bertus Venter

Hi, 

 

We have recently installed 2 new Sophos XG firewalls with multiple VPNs connected between them.

Recently we go a problem where certain of our IPSec VPN will disconnect with any warning or real reason and won't reconnect until you manually deactivate and reactivate the connection.

I tried to resolve it but I'm unable to find any similar issues.

Please see below screen shot of the log viewer file:

Sophos XG 1 - Public IP: 196.44.37.69 connecting to 154.119.53.137 (Sophos XG 2)

Sophoa XG 2 - Public IP: 154.119.53.137 connecting to 196.44.37.69 (Sophos XG 1)

Please see failed entries marked in yellow.

 

Thank you



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    I would take a hard look at the DPD settings. I haven't seen those authentication errors before but I have seen this behavior in tunnels. It was happening when the tunnels wanted to re-negotiate but were not fully tearing down existing sessions. It might help if you let us know what Firmware version you are running. Here is a link to a post which details building tunnels in v17. I hope it helps. 

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    I would take a hard look at the DPD settings. I haven't seen those authentication errors before but I have seen this behavior in tunnels. It was happening when the tunnels wanted to re-negotiate but were not fully tearing down existing sessions. It might help if you let us know what Firmware version you are running. Here is a link to a post which details building tunnels in v17. I hope it helps. 

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