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Pol Hallen
Asked: 2017-09-01 06:50:01 +0800 CST

Correct way to set ports with iptables

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I'd like optimize my iptables script setting to variable the list of ports:

# allowed services
PORTS=21,22,23

iptables -A INPUT -p tcp --match multiport --dports $PORTS -j ACCEPT

is this the correct way?

iptables

1 Answers

  1. I didn't think you could put variables in the iptables.conf. In the past when this was needed I would create a bash script wrapped around iptables to create/update needed values within iptables.

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