Hello, yesterday I installed the latest 6.25.3 version on DietPi on my various Pis (2B, 3B and newest 4B). I Installed Pi-hole, PiVPN, fail2ban and ProFTP on the Pi 3B and LAMP stack, fail2ban and ProFTP on the Pi 4B. Now on the 3B I have (and configured) iptables firewall instead iptables is …

We configure fail2ban to use blackhole routing as blocking method. This is more lightweight and does not require any additional software install. iptables is much more flexible, but fail2ban does not make use of this anyway. So if you need more complex firewall rules, then install iptables and you m…

Thank you for reply, I’ll install iptables on the 4B manually. I don’t understand why on the Pi 3B iptables is already installed and not on 4B. If fail2ban not using iptables, which is the software package I installed on Pi 3B that required and installed iptables?

maximumwarp No idea what might have installed iptables. If the Pi3 system is running for some years, it might be left from our old install script, which used iptables as well for fail2ban blocking. This was changed a bunch of versions ago, not sure when exactly.

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Confused about firewall in latest 6.25.3 version

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