https://www.pistack.xyz/tags/firewall-management/ Recent content in Firewall-Management on Pi Stack Hugo en-us Mon, 25 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-25-linux-iptables-rule-persistence-management-netfilter-firewalld-guide/ Mon, 25 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-25-linux-iptables-rule-persistence-management-netfilter-firewalld-guide/ <p>The Linux netfilter framework powers iptables, the most widely deployed firewall on Linux servers. But iptables rules exist only in kernel memory — a server reboot wipes every rule, potentially leaving systems completely unprotected until an administrator manually restores the configuration. For self-hosted infrastructure, automating iptables rule persistence is not a convenience; it is a security requirement. Three approaches dominate this space: the Debian <strong>iptables-persistent</strong> package, the Red Hat <strong>netfilter-persistent</strong> framework, and <strong>Firewalld offline</strong> mode with direct interface rules. Each handles persistence differently, and choosing the right one depends on your distribution and management philosophy.</p>