Somebody asked about Boson Netsim, as they need it for a Cisco class: http://mybroadband.co.za/vb/showthread.php?t=140847 Since it's just a simulator, it ought to be able to get it working in Wine. The URL in http://appdb.winehq.org/objectManager.php?sClass=version&iId=927 for a similar tool from the same place is dead, but boson.com is still alive and has demos. Doesn't look like it works too well yet. I'm posting this note mostly as a reminder to myself that this looks like a semiimportant app in some circles that might be worth some effort.