Why do so many iptables examples specify both "-p tcp" and "-m tcp"?

Posted by Alex R on Server Fault See other posts from Server Fault or by Alex R
Published on 2010-05-09T20:48:20Z Indexed on 2010/05/09 21:00 UTC
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iptables

The manual isn't very clear, and the online articles & tutorials don't bother to explain it.

What's the significance of -m tcp and -p tcp used together? It seems so redundant, it bothers me...

Thanks

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Developer IT

Why do so many iptables examples specify both "-p tcp" and "-m tcp"? - Developer IT

Why do so many iptables examples specify both "-p tcp" and "-m tcp"?

iptables

Related posts about iptables

Sometimes this script fails to update the iptables

My current iptable configuration doesn't work [on hold]

L2TP iptables port forward

iptables -P FORWARD DROP makes port forwarding slow

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