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Unable to block trafic between subnets

DanielAdolfsson

Hi!

Iäm having trouble with blocking traffic between subnets. I have 3 subnets and when i add a block any any rule nothing happens, I can still reach machines from one subnet to another. Is there some rules that i don't see in the webGUI that can cause this? Also, I notice that when i added the 3rd subnet i could reach machine on that subnet right away without any rules. That does not seem correct. A firewall should block everything that i do not allow.

I hope someone can help me with this.



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    Anywhere you find a checkbox that allows traffic or an allowed networks box, it creates hidden "system level" firewall rules. For order of precedence, see #2 at community.sophos.com/.../22065. You can see all rules by querying iptables from the shell, iptables -L -v -n. With ICMP as an example, for more granularity of control, use manually created rules instead of the checkboxes at Network Protection > Firewall > ICMP.
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    Anywhere you find a checkbox that allows traffic or an allowed networks box, it creates hidden "system level" firewall rules. For order of precedence, see #2 at community.sophos.com/.../22065. You can see all rules by querying iptables from the shell, iptables -L -v -n. With ICMP as an example, for more granularity of control, use manually created rules instead of the checkboxes at Network Protection > Firewall > ICMP.
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