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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 ...
3Com VCX IP telephony module: back-to-back user agent SIP PBX. 3CX Phone System, for Windows, Debian 8 GNU/Linux. Aastra 5000, 800, MX-ONE. Alcatel-Lucent 5060 IP Call server. Aricent SIP UA stack, B2BUA, proxy, VoLTE/RCS Client. AskoziaPBX. Avaya Application Server 5300 (AS5300), JITC certified ASSIP VoIP.
Socket Secure (SOCKS) is a technology created in the early 1990s that uses proxy servers to relay traffic between networks or systems. Application-level gateway (ALG) techniques are a component of a firewall or NAT that provides configureable NAT traversal filters. It is claimed that this technique creates more problems than it solves.
Network address translation ( NAT) is a method of mapping an IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device. [1] The technique was originally used to bypass the need to assign a new address to every host when a network was moved, or ...
IVI Translation refers to a stateless IPv4/IPv6 translation technique. [1] It allows hosts in different address families ( IPv4 and IPv6) communicate with each other and keeps the end-to-end address transparency. [2] Stateless NAT64 can be used in 4 different scenarios: [3] Stateless NAT64 is a replacement of SIIT (RFC 6145).
DMZ (computing) In computer security, a DMZ or demilitarized zone (sometimes referred to as a perimeter network or screened subnet) is a physical or logical subnetwork that contains and exposes an organization's external-facing services to an untrusted, usually larger, network such as the Internet. The purpose of a DMZ is to add an additional ...
Session border controller. A session border controller ( SBC) is a network element deployed to protect SIP based voice over Internet Protocol (VoIP) networks. Early deployments of SBCs were focused on the borders between two service provider networks in a peering environment. This role has now expanded to include significant deployments between ...
Port Control Protocol ( PCP) is a computer networking protocol that allows hosts on IPv4 or IPv6 networks to control how the incoming IPv4 or IPv6 packets are translated and forwarded by an upstream router that performs network address translation (NAT) or packet filtering. By allowing hosts to create explicit port forwarding rules, handling of ...