Is it possible to add a IPTABLES rule which allows all the protocols for specific source and destination ports? I tried the following but it didn't work.

iptables -I FORWARD 1 -s -d -p 0 --sport 0:65535 --dport 1191:1191 -j ACCEPT

iptables error: unknown option `--sport`

Any comments are greatly appreciated.

  • 2
    Many protocols do not have ports (gre, icmp, etc). – Zoredache Aug 8 '12 at 22:43
  • Yes. I notice when you use -p tcp --dports and save the firewall state, the save file also has -m tcp on each line, which implies to me that you cant do it for multiple protocols. I don't know for certain though. – Sirex Aug 8 '12 at 22:45

You can't use --sport or --dport with -p 0 (or -p all) because IP transport layer can have protocols that aren't tied to ports. You can do this with protocols like udp/tcp/sctp/etc.

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