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UTMv9 question about port forwarding

nickb_01
Hi!

I'm new with using Sophos UTM v9. I have a problem with port forwarding and i hope someone here can help me.

I'm using UTM with an extra IP (1.2.3.4), that needs to port forward to our web server (5.6.7.8). But i want to keep the IP of the user that request the website. So the situation:

client (9.10.11.12) -> gateway (1.2.3.4) -> web server (5.6.7.8)

I've got that working. But in my website I'm using $_SERVER['REMOTE_ADDR']. Normally that returns the IP of the client (9.10.11.12), but now its the gateway's address(1.2.3.4).

I understand that's because I've used SNAT and DNAT rules. But i can't get it to work without.

Can someone help me with this? I've been using Google the whole morning and can't find a solution.

Kind regards,

Nick


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  • 0
    Yes, sometimes it's needed, but, usually, the problem can be solved by putting an Additional Address on an interface and then using the "(Address)" or "(Network)" object created by WebAdmin instead of a manually-created Host/Network definition.  Someone not well versed in iptables and the internals of the UTM is more likely to cause more problems than to solve one with this capability.

    Cheers - Bob