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  2. Firewall (computing) - Wikipedia

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

    Firewall appliances may also offer non-firewall functionality, such as DHCP [11] [12] or VPN [13] services. Host-based firewalls are deployed directly on the host itself to control network traffic or other computing resources. [14] [15] This can be a daemon or service as a part of the operating system or an agent application for protection.

  3. Web application firewall - Wikipedia

    en.wikipedia.org/wiki/Web_application_firewall

    A web application firewall (WAF) is a specific form of application firewall that filters, monitors, and blocks HTTP traffic to and from a web service.By inspecting HTTP traffic, it can prevent attacks exploiting a web application's known vulnerabilities, such as SQL injection, cross-site scripting (XSS), file inclusion, and improper system configuration. [1]

  4. 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 ...

  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. 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 ...

  7. Distributed firewall - Wikipedia

    en.wikipedia.org/wiki/Distributed_firewall

    A distributed firewall is a security application on a host machine of a network that protects the servers and user machines of its enterprise's networks against unwanted intrusion. A firewall is a system or group of systems ( router, proxy, or gateway) that implements a set of security rules to enforce access control between two networks to ...