Multiport NAT with a single rule?



  • Is it possible to add a single nat rule doing multi ports that are not in a range?  I have a class C subnet that gets nated back to about 30 systems.

    I would like to create a single NAT rule that forwards  pop3,smtp,smtp-alt, Imap, http and https to a lan server. I see where we can do ranges  (1000-2000) but I do not see where we can do a list of ports under a single rule.

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    Ok I may have found the proper solution. (Aliases)  So use to iptables  -m porta,portb,portc.



  • Yes aliases are the solution to your problem.

    Unfortunately it's not yet possible to use Aliases in the "Advanced outbound NAT" rules.



  • @GruensFroeschli:

    Yes aliases are the solution to your problem.

    Unfortunately it's not yet possible to use Aliases in the "Advanced outbound NAT" rules.

    "Advanced outbound NAT", Ok confussion sets in where once was light..

    I see 3 NAT options,, Port Forward, 1:1 and OutBound.

    My concerns are with Port Forwarding, Can I use Aliases with port forwarding or is all NATing not able to use Aliases?



  • You can use aliases in all field with a red background.
    So yes you can use aliases in the normal port forwardings.

    Advanced outbound NAT is the "outbound" tab.



  • @GruensFroeschli:

    You can use aliases in all field with a red background.
    So yes you can use aliases in the normal port forwardings.

    Advanced outbound NAT is the "outbound" tab.

    Thanks Gruens


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