Firewall in general helps with protecting your system from intrusion by second or third party and prevents pop up adverts that can be harmful to computer system.
If you add family protection tool to your system also you lock the computer while not using it without switching it off, monitor what web sites have been visited and block websites that have questionable content.
Netscreen Firewall protection offers security and protection for large networks. The low-profile modular chassis system allows for greater flexibility, which is perfect for larger businesses.
No Firewall
There is no such thing as firewall thinking or there is not any public information on firewall thinking.
Neither. Use AVG firewall. It's even better than the other two or the Windows firewall.
Is it your PC's firewall or NORTON firewall ? You may have more than one firewall installed on your PC
packet filter firewall
There is no such thing as firewall thinking or there is not any public information on firewall thinking.
Integrated firewall.
binary firewall that allows only authorized IP addresses to pass through the firewall.
a third party firewall is any firewall that did not come with the computers operating system
It is the general consensus that you should complement your firewall program by installing a hardware firewall. This is a firewall that is built into a router or stand-alone device. It often provides greater protection than a software-based firewall.
A statefull firewall.