Multiple Port Forwarding

["Bewerbungsadresse@web.de" <bewerbungsadresse@web.de>]

hi guys

sorry for this possibly "bad title"

but i´ve got a question regarding port forwarding and iptables
(i hope this question hasn´t been asked so much *gg)

is it possible to forward one port on the firewall to different clients?

e.g.

Internet -> Request to Firewall Port 4162

Rule: Forward all traffic on port to host:

a) 192.168.0.1:4162
b) 192.168.0.2:4162
c) 192.168.0.3:4162

???????

background: P2P for example should be possible on _all_ clients
it´s really just for information, cause i hate P2P ;)

it would be very kind, if you could help me or give any hints, where i 
can find more information (google is not very helpful in this way)

thx
micha