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  2. Application-level gateway - Wikipedia

    en.wikipedia.org/wiki/Application-level_gateway

    An application-level gateway ( ALG, also known as application layer gateway, application gateway, application proxy, or application-level proxy) is a security component that augments a firewall or NAT employed in a mobile network. [1] [2] It allows customized NAT traversal filters to be plugged into the gateway to support address and port ...

  3. Application layer - Wikipedia

    en.wikipedia.org/wiki/Application_layer

    Application layer. An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications network. [1] An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. [2] Although both models use the same term for their ...

  4. Circuit-level gateway - Wikipedia

    en.wikipedia.org/wiki/Circuit-level_gateway

    Circuit-level gateway. A application level gateway is a type of firewall . Application level work at the session layer of the OSI model, or as a "shim-layer" between the application layer and the transport layer of the TCP/IP stack. They monitor TCP handshaking between packets to determine whether a requested session is legitimate.

  5. OSI model - Wikipedia

    en.wikipedia.org/wiki/OSI_model

    1. Physical layer. v. t. e. The Open Systems Interconnection ( OSI) model is a reference model from the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems interconnection." [2] In the OSI reference model, the communications between systems ...

  6. Wireless access point - Wikipedia

    en.wikipedia.org/wiki/Wireless_access_point

    Wireless access point. [1] [2] In computer networking, a wireless access point, or more generally just access point ( AP ), is a networking hardware device that allows other Wi-Fi devices to connect to a wired network or wireless network. As a standalone device, the AP may have a wired connection to a switch or router, but, in a wireless router ...

  7. Internet security - Wikipedia

    en.wikipedia.org/wiki/Internet_security

    Application-level gateway. An application-level firewall is a third-generation firewall where a proxy server operates at the very top of the OSI model, the IP suite application level. A network packet is forwarded only if a connection is established using a known protocol. Application-level gateways are notable for analyzing entire messages ...

  8. Border Gateway Protocol - Wikipedia

    en.wikipedia.org/wiki/Border_Gateway_Protocol

    Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet. BGP is classified as a path-vector routing protocol , [3] and it makes routing decisions based on paths, network policies, or rule-sets configured by a network ...

  9. Application security - Wikipedia

    en.wikipedia.org/wiki/Application_security

    Application security. Application security (short AppSec) includes all tasks that introduce a secure software development life cycle to development teams. Its final goal is to improve security practices and, through that, to find, fix and preferably prevent security issues within applications. It encompasses the whole application life cycle ...

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