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UTM install without NAT

rthur
Hi everyone!

I'm in the process of setting up Sophos UTM for my home network, but I've run into a few configuration issues.

I've been allocated a /24 for my own use. As such, I'd like to avoid using NAT, and instead have the Sophos appliance serve as a firewall and dhcp server.

I've been told that in order to achieve this, I should bridge the two interfaces (the "internal" one, and the "external one") together.

This worked fine for a few hours until the upstream router went down. At that point, devices outside of my network got a lease from my dhcp server, and became part of my internal network - oops.

Does anyone know if / how I can configure Sophos to act as a router and firewall but without NAT?

Thanks!


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  • 0 in reply to BarryG
    Hi Barry,

    Thanks for the reply! I've unbridged the interfaces, and this does seem to make more sense.

    I currently have my interfaces set up as follows:


    However I don't seem to be able to access anything outside of my subnet (192.168.2.0/24). Do i need to setup a route?

    Cheers,

    Arthur
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