Editing Linux router with WAN, LAN and DMZ (section)

== Tearing it down ==
<syntaxhighlight lang="bash">
sysctl -w net.ipv4.ip_forward=0

iptables -P INPUT   ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT  ACCEPT
iptables -F
iptables -t nat -F
iptables -X
</syntaxhighlight>

{{Box|1=On current distributions <code>iptables</code> is usually a front end to nftables (<code>iptables-nft</code>). The syntax above is unchanged; <code>iptables -V</code> reports which backend is in use, and rules created this way are visible with <code>nft list ruleset</code>.}}

[[Category:Networking]]
[[Category:Linux]]
[[Category:Howto]]