Hi All,
We have a ipsec tunnel from the Branch office to the Head office. We used this KB (https://support.sophos.com/support/s/article/KB-000035798?language=en_US) to route traffic from a specific subnet at the branch office to the WAN of the Head office, this works perfectly.
The only thing is that when we active the IPSEC VPN, DNS lookups at the branch office XG doesn't work anymore, also the firewall is nog manageable anymore from sophos central, but you still can manage it at the IP with port 4444.
Head office:
Rule:
NAT:
Branch office:
The rules:
When the VPN is active I can't do DNS lookups at the branch office XG, no matter which DNS server I enter.
When i disable the VPN the DNS works again and the firewall comes back in sophos central also.
At the administration->devices access part I already set the DNS service on every Zone just for the test but also didn't work out.
The rules are working, when I have a device in the specific subnet at the branch office I go trough the WAN of the Head office, also when I have a device outside the subnet it goes trough the WAN of the branch office, but I can't figure out why the firewall can't do DNS queries anymore...
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