Linux Command Line - nothing it's impossible by command line!

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Version
Linux Command Line
version 1.4
Last modified date: 2009-07-03
Created Date: 2008-01-06

Linux Command Line: IPTABLES (firewall)

View the commands list divided into arguments

Command	Description
# iptables -t filter -L	show all chains of filtering table [man]
# iptables -t nat -L	show all chains of nat table [man]
# iptables -t filter -F	clear all rules from filtering table [man]
# iptables -t nat -F	clear all rules from table nat [man]
# iptables -t filter -X	delete any chains created by user [man]
# iptables -t filter -A INPUT -p tcp --dport telnet -j ACCEPT	allow telnet connections to input [man]
# iptables -t filter -A OUTPUT -p tcp --dport http -j DROP	block HTTP connections to output [man]
# iptables -t filter -A FORWARD -p tcp --dport pop3 -j ACCEPT	allow POP3 connections to forward chain [man]
# iptables -t filter -A INPUT -j LOG --log-prefix	Logging on input chain [man]
# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE	configure a PAT (Port Address Traslation) on eth0 masking outbound packets [man]
# iptables -t nat -A PREROUTING -d 192.168.0.1 -p tcp -m tcp --dport 22 -j DNAT --to-destination 10.0.0.2:22	redirect packets addressed to a host to another host [man]