I have the default firewall for my computer. The one you get right when you receive the computer. Though for the antivirus program. Right now I have a Norton antivirus. However, before I factory rested my computer. I did not have a antivirus program installed on my desktop. Still having the same firewall before I decided to factory reset my computer.
As for my wireless router. I am using a Asus RT-N66U router. The channel of it was on 11 and the security was WPA.