I'm actually looking at doing a wrapper around NMap. Personally I'm fine with "Just use NMap" as a solution, but I need something that's usable by people who know only a little about Linux and aren't super comfortable in the command line. So I want to do stuff like enumerating the interfaces and just letting them pick one to scan instead of having to specify a network. I'll probably work in a really basic UI using Dialog or something as well.