Iptables

Aug 08, 2025 Linux

Linux iptables: Firewall Configuration

• iptables operates on a tables-chains-rules hierarchy where packets traverse specific chains (INPUT, OUTPUT, FORWARD) within tables (filter, nat, mangle, raw) and are matched against rules in order…

Feb 19, 2025 Infrastructure

Firewall Rules: iptables and nftables

Linux packet filtering has evolved significantly over the past two decades. At its core sits the netfilter framework, a kernel subsystem that intercepts and manipulates network packets. While…