Multiport trouble

[HdV@DTO.TUDelft.NL]

Hi ppl,

I have build myself a nice iptables script (well that's what I think
anyway...), but now I have met something that I can't solve by myself.
So I'd like to call upon the list to help me crack this one.

The rule that is giving me trouble is this one:

  iptables -A OUTPUT -o $PUB_IFACE -p tcp \
           -m multiport --destination-port 443,4030 \
           -s $PUB_IP -m state --state NEW -j ACCEPT

I wanted to have a source-port specification in there too, but somehow I
had to remove "--source-port $EPHEMERAL_PORTS" (it was immediately after
"-s $PUB_IP") if I wanted to use multiport and still have a
syntactically correct instruction.

Could someone explain to me what I need to change in this rule to get it
working like I want it to? Or otherwise tell me that I want the
impossible, so I can stop trying `;-)

Thanks for your time!

Grx HdV