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Layer 2 Tunneling Protocol. In computer networking, Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs) or as part of the delivery of services by ISPs. It uses encryption ('hiding') only for its own control messages (using an optional pre-shared secret), and does not provide any encryption ...
Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).
IEEE 802.1Q, often referred to as Dot1q, is the networking standard that supports virtual local area networking (VLANs) on an IEEE 802.3 Ethernet network. The standard defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames.
Virtual routing and forwarding. In IP-based computer networks, virtual routing and forwarding (VRF) is a technology that allows multiple instances of a routing table to co-exist within the same router at the same time. One or more logical or physical interfaces may have a VRF and these VRFs do not share routes.
Dynamic Multipoint Virtual Private Network. Dynamic Multipoint Virtual Private Network (DMVPN)[1] is a dynamic tunneling form of a virtual private network (VPN) supported on Cisco IOS -based routers, and Huawei AR G3 routers, [2] and on Unix -like operating systems.
In computer networking, Point-to-Point Protocol (PPP) is a data link layer (layer 2) communication protocol between two routers directly without any host or any other networking in between. [ 1 ] It can provide loop detection, authentication, transmission encryption, [ 2 ] and data compression. PPP is used over many types of physical networks ...
Virtual Extensible LAN (VXLAN) is a network virtualization technology that uses a VLAN -like encapsulation technique to encapsulate OSI layer 2 Ethernet frames within layer 4 UDP datagrams, using 4789 as the default IANA -assigned destination UDP port number, [1] although many implementations that predate the IANA assignment use port 8472.
Internet Key Exchange. In computing, Internet Key Exchange (IKE, versioned as IKEv1 and IKEv2) is the protocol used to set up a security association (SA) in the IPsec protocol suite. IKE builds upon the Oakley protocol and ISAKMP. [1] IKE uses X.509 certificates for authentication ‒ either pre-shared or distributed using DNS (preferably with ...
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