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Hello,

ENV: Centos 8, Csf 14.04, iptables enabled and started as well as ICMP_IN = 0.

I have added manually in iptables ICMP INPUT and OUTPUT for ping to work.

I also have 192.168.0.0/24 in allow.

With this, ping from 192.168.0.2 ---> to 192.168.0.3 and vise versa works.

But csf -cp from 192.168.0.2 ---> to 192.168.0.3 and vise versa does not work.

Here, do not that ICMP_IN = 0. It - logically - blocks external pings but does not recognize its own cluster.

If ping works internally, then csf -cp should also be working internally, keeping ICMP_IN = 0.

If experts consider it as a feature request, then it is.

Forgot to mention:

As csf -cp does not work, the local csf -d will not block any remote csf -cd. This was the reason why I needed to trace the problem with above mentioned method.