 A software utility and/or hardware device that limits outside network access to a computer or local network by blocking or restricting ports. Firewalls are a great step for helping prevent un-authorized access to a company or home network. The image to the right is a 3Com SuperStack 3 Firewall, an example of what a hardware firewall may look like.
- A listing of computer firewall programs as well as additional information about preventing unauthorized access to your computer can be found on document CH000464.
- See document CH000907 for additional information about disabling firewalls.
- Additional information about computer security can be found on our security question and answer page.
Also see: Application gateway, Network definitions, Security definitions, SPI | |
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