[SIZE="4"]first I like to explain what I want to achieve:[/SIZE]
Two servers need to communicate through a firewall. Because the subnet has only 2 assignable IP's (/252), I need to implement the Sophos UTM 9 as a transparent firewall:
The server must be able to communicate on port 12345 but must not be able to communicate in any other way, except for pings, which must work.
[SIZE="4"]This is what I did:[/SIZE]
Server 1 is connected to eth0, server 2 is connected to eth2. Interface eth2 is located in a different network to be able to manage the UTM.
I created a bridge between eth0 and eth1.
At this point I hoped that the two servers could communicate. It would not work. So I found this kb article and went through the steps 1-5 ("Enable the firewall rule"). It did not help. I cannot send pings through the UTM. To be sure I removed the UTM and connected them directly. Pings went through.
I need a little help here.
[SIZE="4"]This is what I don't understand:[/SIZE]
- Why do I need to create an interface on the bridge and even assign it a IP address?
- Despise the any/any rule, pings won't work. (I did not set up any other firewall rules, yet.)
Thanks in advance!
Haedrig
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