A quick run down on iptables rules
What is it?
iptables is a cli frontend to netfilter, the Linux kernel firewall/nat implementation for OSI layer 3 and 4.
Okay, give me more details
- When you run "iptables", the actual file being executed is "xtables-multi". That is, because the file name "iptables" is symlinked to "xtables-multi".