Hi,
I've the following setup:
Network A is connected to the UTM 9. I also have one interface on the UTM 9 as WAN interface, which is connected to an internet router:
PC aa UTM 9 Internet Router
There is a masquarding configured for the WAN interface and this is all working pretty well. Now I would like to change this configuration in the following way:
PC aa UTM 9 Internet Router
...................................................... PC xx
So I added an additional address on the WAN interface in Network C (networks B and C are on the same ethernet interface). PC aa is able to connect to PC xx, but PC xx can't reach PC aa. If I enable "uplink Monitoring" PC xx is able to connect to PC aa.
Could anybody explain me, what "uplink monitoring" is doing here and what I can do to set this up in a better way? If I enable uplink Monitoring, I'm not able to restrict connections from Network C to Network A with any firewall rule. If I disable uplink monitoring, I was not able to configure anything (static routing, policy based routing, firewall rules,...) which enables a device to connect from Network C to Network A.
I hope this is understandable ;-) I currently use version 9.205-12.
Thanks for any ideas...
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