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Firewall
What is a firewall?
A firewall prevents computers on a network from communicating directly with external computer systems. A firewall typically consists of a computer that acts as a barrier through which all information passing between the networks and the external systems must travel. The firewall software analyzes information passing between the two and rejects it if it does not conform to pre-configured rules.
Why do I need a firewall?
The Internet has revolutionized the way we communicate, shop, and bank, making it easier for users to reach out to any website or individual PC, at any time. This freedom also comes with a price. Each unprotected connection, whether to or from the Internet, leaves your PC vulnerable to hacker attacks.
Whether you are on a home network, broadband or dial-up connection, or simply enjoying a hotspot, a firewall helps ensure your personal files and information are not compromised.
How does a firewall work?
A firewall filters and routes incoming traffic and makes outgoing requests (to the Internet, for example) on behalf of local workstations. A good firewall has complete inbound and outbound security, automatically trusting known good applications and blocking spyware, Trojans, and key loggers.
Firewall software is a wise investment for individuals, small businesses, medium businesses, and global enterprises.
Firewall Research
- Datasheets, Case Studies, & White papers
- McAfee Avert® Labs Blog
- Computer security advice for consumers
