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2. Firewall (computing) - Wikipedia

   en.wikipedia.org/wiki/Firewall_(computing)

   In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on configurable security rules. [1] [2] A firewall typically establishes a barrier between a trusted network and an untrusted network, such as the Internet, [3] or between several VLANs.

3. Personal firewall - Wikipedia

   en.wikipedia.org/wiki/Personal_firewall

   A personal firewall differs from a conventional firewall in terms of scale. A personal firewall will usually protect only the computer on which it is installed, as compared to a conventional firewall which is normally installed on a designated interface between two or more networks, such as a router or proxy server. Hence, personal firewalls ...

4. Comparison of firewalls - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_firewalls

   Barracuda Firewall Proprietary: Included Firewall Next Generation appliance Windows-based appliance embedded firewall distribution Cyberoam: Proprietary: Included Firewall Sophos appliance Windows-based appliance embedded firewall distribution D-Link: Proprietary: Included Firewall DFL Windows-based appliance embedded firewall distribution ...

5. Using McAfee: Firewalls - AOL Help

   help.aol.com/articles/Using-McAfee-Firewalls

   For example, when Firewall detects ICMP packets, it analyzes these for suspicious traffic patterns by comparing the ICMP traffic against known attack patterns. Firewall compares packets to a signature database and, if suspicious or harmful, drops the packets from the offending computer, and then optionally logs the event.

6. Firewall (construction) - Wikipedia

   en.wikipedia.org/wiki/Firewall_(construction)

   Firewall residential construction, separating the building into two separate residential units, and fire areas Example of a firewall used to inhibit the spread of a fire at an electrical substation. A firewall is a fire-resistant barrier used to prevent the spread of fire. Firewalls are built between or through buildings, structures, or ...

7. Application firewall - Wikipedia

   en.wikipedia.org/wiki/Application_firewall

   An application firewall is a form of firewall that controls input/output or system calls of an application or service. It operates by monitoring and blocking communications based on a configured policy, generally with predefined rule sets to choose from. The two primary categories of application firewalls are network-based and host-based.