This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

NAT won't forward to DMZ IP

Hi I have UTM 9.206-35 and I'm rebuilding a DNAT which I had previously forwarded to a windows IIS web server on my internal subnet but now I've built a linux apache server with NICs on my inside and DMZ subnets and I want the outside world to hit the DMZ IP.

It was working when it was set for the inside network destination but after re-creating it doesn't seem to want to work on either side now.

I can see with Inital Packets logged check the traffic hit the external address and allowed by the NAT rule but the destination server doesn't see any activity.

Gateway
Inside: 192.168.4.1
DMZ: 10.1.100.1

Apache host:
Inside: 192.168.4.4
DMZ: 10.1.100.3

DNAT RULE#8: 
FROM:ANY(1:65535/tcp) TO:External (Address)(65080/tcp) DestinationNAT:10.1.100.3(80/tcp)


I see the DNAT in my iptables:
USR_OUTPUT:


USR_PRE:


and I see the initial packets in the live log 

but no matter whether I use automatic or manual firewall rules I see nothing else.

from the looks of the USR_OUTPUT there's 0 packets so it seems like something is breaking down at the rule.


This thread was automatically locked due to age.
Parents
  • Hi, Dave, and welcome to the User BB!

    This sounds like a routing problem.  I bet it's #3 in Rulz, but look at #3 through #5.  Any luck with that?

    Cheers -  Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • Hi, Dave, and welcome to the User BB!

    This sounds like a routing problem.  I bet it's #3 in Rulz, but look at #3 through #5.  Any luck with that?

    Cheers -  Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Children
No Data