3th NIC / DMZ problem (answer not found in older posts)

Hi all,

Been working on this since yesterday. We need a DMZ to add a machine to our network that has to be available on the internet (just port 80 so port forwarded) and has to be separated from the other machines on our network.

Setup + idea:

1 - Setup.JPG


I added a 3th NIC to the machine and the card was detected:

2 - interfaces.JPG

I renamed the interface to DMZ and activated it.

The settings of my internal & DMZ network are:

3 - config - DHCP.JPG

Both are static and both have DHCP enabled. The internal network existed allready and is working flawlessly.

When I tried the DMZ network nothing happened, I tried with DHCP, static IP, ... no connection (tested the lower OSI, cables are fine ;) )

I added a static route after figuring out that UT does not automaticly add a route to newly added interfaces:

4 - Routes.JPG

I also added some rules to separate the 2 networks:

5 - Filter.JPG


My problem still exists. From the untangle machine I can ping 192.168.2.1 (and everything else in the internal network), external works flawlessly and I can ping 192.168.1.1 on the DMZ side. further then that .... nothing.
The other way around, connected machines on the DMZ side can not make connection (not on dhcp, not on static) and can't ping untangle.

Getting hopeless over here :) HELP!!! :)

Attached Images

• 1 - Setup.JPG (24.6 KB)
• 2 - interfaces.JPG (28.1 KB)
• 3 - config - DHCP.JPG (33.8 KB)
• 4 - Routes.JPG (27.4 KB)
• 5 - Filter.JPG (41.3 KB)