multiple ip adresses per network adapter?

1) Is it possible to assign multiple ip adresses to a single network adapter? 2) If 1 is possible, then my next question is: is it possible to direct the requests to different processes listening to the same port? Maybe I should ask if it is possible to have different (ip-based) "port spaces" where different processes listen to the same port but for a different ip address? -- Heiko Nardmann (Dipl.-Ing.), h.nardmann@secunet.de, Software Development secunet Security Networks AG - Sicherheit in Netzwerken (www.secunet.de), Weidenauer Str. 223-225, D-57076 Siegen Tel. : +49 271 48950-13, Fax : +49 271 48950-50