Debian 7 IPTables set up

To set up persistent IPTables rules on Debian GNU/Linux 7 (wheezy)
install package using command:

# apt-get install iptables-persistent

Save current IPTables rules using command:

# /etc/init.d/iptables-persistent save

Edit /etc/iptables/rules.v4 file for IPv4 and
/etc/iptables/rules.v6 for IPv6 rules.

To apply new rules run command:

# /etc/init.d/iptables-persistent reload

Loading iptables rules… IPv4… IPv6…done.

To view current IPTables rules:

# iptables -vnL --line-numbers |more