hitmann said:
I've reinstalled it three times and it's still on my computer. But is it OK to have the software firewall and the router firewall running at the same time? Won't that create any conflict with programs trying to access internet?
It'll be fine to have both. By default the router firewall will simply allow everything to go out onto the Internet without question. It'll only allow incoming traffic if
a). there's a port forward for it, or
b). the traffic is a response to the outgoing request.
An example of b) is when you go to visit a website. You can browse the Internet without having to allow any firewall rules because your computer makes an outgoing connection to the web server and the router then allows in a response to your outbound connection. Another example would be an FTP site - the router will allow incoming traffic on an FTP download if you initiate the outbound connection first. This is called Stateful Packet Inspection.
Some people like to have a software firewall as this allows them to control what goes out to the Internet. You might as well configure the software firewall to allow everything in though - since the router will be handling that side of it anyway.
Finally, you only need port forwards if an application needs to make an connection to your computer from the outside world without you initiating it first. An example of this is an FTP server - you'd want people to be able to connect without you having to do anything, so a port forward will simply open up that port to the Internet and allow incoming connections on it.
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