or how to break your server in three commands or less
To see firewall rules:
sudo iptables -L --line-numbers
To delete a line (line #1):
sudo iptables -D FORWARD 1
To see your NAT rules:
sudo iptables -L -t nat --line-numbers
To delete a line (line #6):
iptables -t nat -D PREROUTING 6
See also
This post by Thinkl33t 😀
