====== iptables speichern ======

Regeln speichern:
<code bash>
iptables-save > /etc/iptables/rules.v4
ip6tables-save > /etc/iptables/rules.v6
</code>

Regeln laden:
<code bash>
iptables-restore < /etc/iptables/rules.v4
ip6tables-restore < /etc/iptables/rules.v6
</code>

Regeln bei Neustart automatisch einspielen:
<code bash /etc/network/if-pre-up.d/iptables>
#!/bin/bash
iptables-restore < /etc/iptables/rules.v4
ip6tables-restore < /etc/iptables/rules.v6
</code>