Port Management tools

In our quest to rid ourselves of Unixware, we just installed a digiboard into a SuSE 8.2 server to run some terminals, line printers, etc on. Everything is working ok now, but what I miss from unixware is a good port management tool, like that was included in sysadm. Any ideas out there? Open source is best of course but being a business we are not averse to paying for software if it scratches an itch we can't quite reach... Rob