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Firewall XG unstable/unreachable after VPN has been up for a while

Martijn Dierckx

Hi

I've got a Sophos Firewall XG running in my home lab where I've achieved the following:

All internet traffic passes trough an ipsec VPN tunnel ending in DigitalOcean VPS, except for some traffic which is filtered out using a policy-routing rule. That traffic goes out directly over the WAN port. (f.e. Netflix, which doesn't like getting traffic from the DigitalOcean IP range)

 

However ...

When everything seemed to work perfectly, after a while, when the VPN connection has been up for 30 minutes or so, my sophos VM becomes unstable. I'm not able to surf the internet anymore, and I'm not even able anymore to surf to the management page of Sophos, nor SSH into the Sophos VM.

I have no idea what's going wrong ... Sophos does work stable, when I disable the VPN connection. Any ideas/suggestions from your side?

 

 

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