Ubuntu – How to start/stop iptables on Ubuntu

iptablesUbuntu

How can I start/stop the iptables service on Ubuntu?

I have tried 

 service iptables stop

but it is giving "unrecognized service".

Why is it doing so? Is there any other method?

Best Answer

I don't know about "Ubuntu", but in Linux generally, "iptables" isn't a service - it's a command to manipulate the netfilter kernel firewall. You can "disable" (or stop) the firewall by setting the default policies on all standard chains to "ACCEPT", and flushing the rules.

iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -F

(You may need to flush other tables, too, such as "nat", if you've used them)

The following article on the Ubuntu website describes setting up iptables for use with NetworkManager: https://help.ubuntu.com/community/IptablesHowTo

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