Iptables is the tool that is used to manage netfilter, the standard packet filtering and manipulation framework under Linux. As the iptables manpage puts it: Iptables is used to set up, maintain, and ...

As packets traverse the Linux network stack, the kernel uses the rules defined in iptables decide what to do with the packet. Using iptables involves configuring the rules that are contained in ...

Iptables, more properly referred to as “iptables/netfilter” because of the two modules that are involved — the userspace module “iptables” and the kernel ...