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DHCP server behind sophos xg bridge mode

JoseCasanova

Greetings everyone,

I have a Sophos XG in bridge mode, with another firewall (Not from Sophos, I'll call it Fw) as gateway and a lan with 4 subnets (no VLAN Tags applied). The LAN port goes to the switch and the WAN port goes to the LAN port of the Fw. The Fw has the DHCP server of all the networks.

I have a rule in the XG that is, literally, 100% open: From any zone to any zone, from any network to any network using any services, with no web, app filter and no IPS rule.

The Bridge mode has 1 LAN port and 1 WAN port. The main IP of the bridge is 192.1.1.30/24. I added 3 Aliases (192.1.2.30, 192.1.8.30, 192.1.9.30, all with netmask 255.255.255.0) to the bridge.

When I connected the Sophos XG, it was great, no problems. After the weekend, no DHCP in the LAN.

I tried adding DHCP Relay of all the DHCP server (all of them come from the Fw), with no luck.

What else should I do?

Thanks in advanced.

Regards,



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