I was shocked when I have noticed that with enabled web filter in transparent mode there is a "bypass" between internal Networks (UTM 9.315-2). [:O]
(Maybe as a home user I only misunderstood the function.)
I do have three internal /24 subnets all connected to a separate VLAN Interface:
- 192.168.10.1/24 LAN
- 192.168.20.1/24 DMZ
- 192.168.30.1/24 guest WLAN
The firewall rules are working fine and there is no network connection especially from guest WLAN to LAN.
The same is the case if I only put LAN to the web filter in transparent mode as allowed netweork. But if I additionally put also one of the other Networks to the allowed Networks of the web filter I can get http access from one Sub net to the other one.
Is it a bug or a Feature? [:S]
At least this is not I do not have expected to allow Network traffic between the subnets by putting them to the allowed list for the web filter.
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