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Port forwarding via NAT router. In computer networking, port forwarding or port mapping is an application of network address translation (NAT) that redirects a communication request from one address and port number combination to another while the packets are traversing a network gateway, such as a router or firewall.
Layer 2 Forwarding Protocol (L2F) Assigned: Yes: Layer 2 Tunneling Protocol (L2TP) [11] 1707 Yes: Windward Studios games (vdmplay) Unofficial: L2TP/IPsec, for establishing an initial connection [153] 1714–1764: Unofficial: KDE Connect [154] 1716: Unofficial: America's Army, a massively multiplayer online game (MMO) [155] 1719: Yes: H.323 ...
A socket is used by a process to send and receive data via the network. The operating system's networking software has the task of transmitting outgoing data from all application ports onto the network, and forwarding arriving network packets to processes by matching the packet's IP address and port number to a socket. For TCP, only one process ...
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.
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NAT Port Mapping Protocol (NAT-PMP) is a network protocol for establishing network address translation (NAT) settings and port forwarding configurations automatically without user effort. [1] The protocol automatically determines the external IPv4 address of a NAT gateway, and provides means for an application to communicate the parameters for ...
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While any free port can be configured as a mirror port, software taps require configuration and place load on the network devices. Even fully passive network taps introduce new points of failure into the network. There are several ways that taps can cause problems, and this should be considered when creating a tap architecture.