iptables

Command for using iptables

1. opening some port
#iptables -A INPUT -i eth0 -p tcp –sport 443 -m state –state your -j ACCEPT

2. deleting

#iptables -D INPUT -i eth0 -p tcp –sport 443 -m state –state your -j ACCEPT

3. sharing the internet
#sysctl -w net.ipv4.ip_forward=1

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
service iptables save

iptables is a command to set route in your computer lan and internet. Even you can arrange your firewall using this command.

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