another port forwarding question

[John Mathey <jmathey@xxxxxxxxx>]

  I'm trying to figure a way to forward a packet from a linux box to an 
internal windows box given a specific port. I'm pretty sure I can specify a 
port in my browser via a colon: eg: http://myfoobox:196, right?


Here is the rule I've set up in the iptables:



$IPT -t nat -A PREROUTING -d $MYEXTIP -p tcp  -s $MYSOURCEIP -p 196 -j DNAT 
--to 192.168.1.50

Now, if I remove the -p ( port) it works, but I don't want every single 
request coming here to get forwarded, just a specific port, I've tried 
entering this in my browser:

http;//myfoobox    - This works if I don't have a port  (-p ) in my 
iptables rule
http://myfoobox:196  - this doesn't work no matter what
just entering the myfoobox   , still no go.

The rule is the first one in my table so I know it has to at least get 
evaluated, in other words, there's not another rule filtering it out before 
it hits this.


Thanks in advance
John