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rated 0 times [  19] [ 0]  / answers: 1 / hits: 37792  / 2 Years ago, fri, july 1, 2022, 11:09:34

I want to create a custom table using iptables so that I can add my custom chains in it. But I doesn't see any option to do that. I tried to search for it but didnt found anything. Please Help.


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 Answers
4

I think you are looking for creating a chain, not a table.



   -N, --new-chain chain
Create a new user-defined chain by the given name. There must be no target of that name already.


Example (-t filter is implied):



iptables -N Services
iptables -A INPUT -j Services
iptables -A Services -m tcp -p tcp --dport 80 -j ACCEPT


Tables can be selected with the -t option:



iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE


And if you are using iptables-restore, the above two rules can be combined to:



*nat
-A POSTROUTING -j MASQUERADE
COMMIT

*filter
:Services -
-A INPUT -j Services
-A Services -m tcp -p tcp --dport 80 -j ACCEPT
COMMIT

[#30427] Sunday, July 3, 2022, 2 Years  [reply] [flag answer]
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rcraftemur

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