Centos – Should I disable iptables when I’m using csf

centoscsffirewalliptables

Should I disable iptables when I'm using csf ?
any help appreciated.

Anyway, you will be using iptables as it is the firewall implementation under Linux. It will be just a wrapper or another interface.

grep an IP which you belevie it is blocked in /etc/csf/

grep IP /etc/csf/* -irl

With Fail2Ban before v0.8.8:

fail2ban-client get YOURJAILNAMEHERE actionunban IPADDRESSHERE

With Fail2Ban v0.8.8 and later:

fail2ban-client set YOURJAILNAMEHERE unbanip IPADDRESSHERE

The hard part is finding the right jail:

Use iptables -L -n to find the rule name...
...then use fail2ban-client status | grep "Jail list" | sed -E 's/^[^:]+:[ \t]+//' | sed 's/,//g' to get the actual jail names. The rule name and jail name may not be the same but it should be clear which one is related to which.