Port Forwarding in P2P Applications

Archived from groups: comp.security.firewalls (More info?)

For my Undergrad thesis, i have to do some stuff with port scan data.I
need the port scanning data coupled with some intrusions also.Where can
i get this sort of data.Any help appreciated.
-Madhu

Avizz wrote:
> Hi All
> I had some basic questions about P2P Applications and Nat Travarsal.
> If I am behind a NAT and want my PrivateIP (192.168.X.X) to listen for
> an incomming request ,Is port forwarding the only option ?Also if i
> want to reach a simlar service running on Some other Private IP the
> how do i reach them ?
> In the Essence is it mandatory for all P2P apps behind NAT to have
> such arangements .I am in process of developing a similar application,
> after many days of searching ,i came to know about Port forwarding ,
> What trouble me most is that one can not expect evey user to be
> competent enough to set up a port forwarding on their NATs. Is there
> any way we can do it programatically.
> i.e some protocol /method by which ** the application ** can
> configure the NAT to forward the request on a particular port to a
> private IP on which it(the application )is running .
> This is a major set back which i can see as far as the success of a
> P2P app is concern .
> Any suggestion/information on NAT Travarsal would be helpfull.
> Thanks
> Avizz