Most routers these days perform NAT and contain a firewall
Swiss cheese
USB devices, other computers, DVD’s, etc
Good admin password – not factory default
A firewall is not “a silver bullet” that takes care of all your security at once.
Use an advanced firewall that examines traffic on multiple layers to help protect you from malware.
Ask your qualified IT security professional which firewall they like best. That way, when there is an error message, your professional will already know what to do to fix the problem.
Software firewalls are programs that run on your workstation to protect you from other devices near you on the network.
You may choose to increase your protection with a more robust firewall that integrates with your anti-virus and anti-spyware solution.
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Duration : 0:3:46