the router has a simple NAT only - and it's from sky (in the uk) which means it's severly locked down functionality wise. quite annoying when i wanted to use port forwarding - but never mind
as for the windows firewall i honestly just don't like it. it's set by default to allow outbound connections it doesn't recognise through. i don't see an option to be informed if a program gets updated (might have changed due to legit update, or something else).
also, it auto sets rules for you. if i install a program that i dont want to connect to the net and windows sets an allow rule. the whole point in my having a firewall (in this situation) is gone. i can block it after but it's too late now.
the win firewall is enabled but as i said i would rather have a 3rd party one.