So... you want to embrace network "fun" and open all ports to outsiders?
Here you are:
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT

Good luck!
Just be sure of what you are doing...

At the far most reluctant end of all this was a journey with beating parts and incredible cloud view.
The intermittent sky of shore stood still on the break of time.

Man is standing...
Up...
Short..

No wonder.