Re: [CentOS] iptables question

Joseph L. Casale wrote:

...

My understanding is that --dport can only specify a single port (--dport 80) or port range (--dport 137:139) inclusive. Use of the multiport module allows up to 15 ports (or port ranges) to be specified.

Ned, So to write --dport 5060,10000:60000 you need to write: -m multiport -p udp -dport 5060,10000:60000 Correct?

Thanks for the help! jlc

I've not used multiport so am unsure of the exact syntax, but that looks reasonable.

I'd keep the -m multiport and --dports together though (also note it's --dports, not -dport), so something like this:

iptables -A INPUT -p udp -m multiport --dports 5060,10000:60000 -j ACCEPT

would accept all UDP packets destined for ports 5060 and 10000-60000.