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2. Comparison of firewalls - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_firewalls

   Proprietary. Included on Dell appliance. Proprietary operating system SonicOS. Based on the Linux kernel. Barracuda Firewall. Proprietary. Included Firewall Next Generation appliance. Windows -based appliance. embedded firewall distribution.

3. Personal firewall - Wikipedia

   en.wikipedia.org/wiki/Personal_firewall

   A personal firewall is an application which controls network traffic to and from a computer, permitting or denying communications based on a security policy. [ 1] Typically it works as an application layer firewall . A personal firewall differs from a conventional firewall in terms of scale. A personal firewall will usually protect only the ...

4. Firewall (computing) - Wikipedia

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

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

5. Application firewall - Wikipedia

   en.wikipedia.org/wiki/Application_firewall

   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 ...

6. Netfilter - Wikipedia

   en.wikipedia.org/wiki/Netfilter

   Netfilter is a framework provided by the Linux kernel that allows various networking-related operations to be implemented in the form of customized handlers.Netfilter offers various functions and operations for packet filtering, network address translation, and port translation, which provide the functionality required for directing packets through a network and prohibiting packets from ...

7. Firestarter (firewall) - Wikipedia

   en.wikipedia.org/wiki/Firestarter_(firewall)

   Firestarter is a personal firewall tool that uses the Netfilter ( iptables /ipchains) system built into the Linux kernel. It has the ability to control both inbound and outbound connections. Firestarter provides a graphical interface for configuring firewall rules and settings. It provides real-time monitoring of all network traffic for the system.

8. Next-generation firewall - Wikipedia

   en.wikipedia.org/wiki/Next-generation_firewall

   A next-generation firewall ( NGFW) is a part of the third generation of firewall technology, combining a conventional firewall with other network device filtering functions, such as an application firewall using in-line deep packet inspection (DPI), an intrusion prevention system (IPS). Other techniques might also be employed, such as TLS ...

9. PeerBlock - Wikipedia

   en.wikipedia.org/wiki/PeerBlock

   PeerBlock is a free and open-source personal firewall that blocks packets coming from, or going to, a maintained list of black listed hosts. [ 2] PeerBlock is the Windows successor to the software PeerGuardian (which is currently maintained only for Linux). [ 3] It blocks incoming and outgoing connections to IP addresses that are included on ...