I've got a Asus RT-N66U router that I have setup with WPS-2 security and firewall enabled. I use my work laptop on my home network occasionally and it has McAfee Endpoint Encryption software on it. Every once in a while I see a message pop up that says "Port scan attack is logged". I'm not really sure what this is, but I'm starting to wonder if my home network has been compromised. There is also an issue with some of my work applications, like Lync, giving me a exchange server error messages.
Other than scanning all of the computers on the network, which I constantly do with MBAM and SuperAntiSpyware, is there something else I should be doing? I recently downloaded a program that gave me the Vosteran hijacker on my main PC, but I was able to get that cleaned off, but it wasn't easy. All of scans I've done come back without any findings, other than tracking cookies, I'm sure I could be using a more robust scanner, but at what risk? Like most people I have a lot of other wifi enabled devices (smart phone, iPad, TVs, DVD players, and Roku) using the network.
I really don't want to blow the everything away because I'm nervous, is there something else I can do. The only other thing I can think of doing is rebuilding all of the computers with a clean version of Windows and resetting the network back to factory defaults and setting everything up again.