Public Domain NAT for Solaris? (off topic)

I've been trying to break out some of the CIDR block to customers using NAT translations. I have been successful for Cisco routers using IOS 11.2 on up and with some of the Ascend gear (still trying to figure out 6.0 for the P130) My question is, are there any public domain sources for a NAT translator on a Solaris box that has two or more interfaces? I need something quick and dirty to put at some customer sites and I don't have immediate access to anything else... Sorry to not be on the "topic" of NANOG, but I'm running out of resources/ideas on this one... Marcos ''' (o o) -oOO--(_)--OOo--------------------------------mdella @@ cstone.com---- Marcos R. Della http://www.cstone.com/~mdella