A freeware tool I use (but may not work with all products like the one listed above) is WallWatcher. Only works for Windows. I thas an annoying tendancy to need to be restarted every few days, just seems to hang. But I've been happy with it. It does all I really care about. Of course I don't really care if a neighbor gets on my network. I've applied basic WPA security, but nothing a determined attacker couldn't get through if he decided to target me rather then the open networks around me.
fundamentalism, fundamentally wrong.