Sure you need two ports... otherwise the networkbase wouldnt know which packet has to be routed to which application.
If you have a strictly acting firewall, be sure to enable both ports (not needed in original windowsfirewall of XP).
If you try it on local lan (different PCs) and you are not using a router (so really local and no usage of WAN-IP) you can use the same port - coz of different IPs. Otherwise, using WAN (Internet-IP) you need to set up different ports and on your gateway you have to route the ports to the desired local-IPs.
bye
MB
If you have a strictly acting firewall, be sure to enable both ports (not needed in original windowsfirewall of XP).
If you try it on local lan (different PCs) and you are not using a router (so really local and no usage of WAN-IP) you can use the same port - coz of different IPs. Otherwise, using WAN (Internet-IP) you need to set up different ports and on your gateway you have to route the ports to the desired local-IPs.
bye
MB