Install iptables Debian 11 (Bullseye) and basic rules initial configuration. IPtables is being replaced by nftables starting with Debian 10 Buster. Debian 11 comes with nftables framework. So to install iptables first we need uninstall nftables and its dependencies. Uninstall nftables and its dependencies. #apt-get remove –auto-remove nftables #apt-get purge nftables Install IPtables in Debian … Continue reading Iptables Debian 11 Bullseye configuration