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Firewalls are essential tools in the fight against malicious programs on the
Internet. Firewalls are devices or software that protect an internal network from
unauthorized access to and from the Internet at large. Hardware firewalls protect
networks using a number of methods, such as hiding IP addresses and
blocking TCP/IP ports.Most small office/home office (SOHO) networks use
a hardware firewall, such as the Linksys router. These
devices do a great job.
Windows XP VISTA Windows7 windows 8 comes with an excellent software firewall, called the Windows
Firewall. It can also handle the
heavy lifting of port blocking, security logging, and more.
