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  2. Point-to-Point Tunneling Protocol - Wikipedia

    en.wikipedia.org/wiki/Point-to-Point_Tunneling...

    A PPTP tunnel is instantiated by communication to the peer on TCP port 1723. This TCP connection is then used to initiate and manage a GRE tunnel to the same peer. The PPTP GRE packet format is non standard, including a new acknowledgement number field replacing the typical routing field in the GRE header. However, as in a normal GRE connection ...

  3. Split tunneling - Wikipedia

    en.wikipedia.org/wiki/Split_tunneling

    Split tunneling is a computer networking concept which allows a user to access dissimilar security domains like a public network (e.g., the Internet) and a local area network or wide area network at the same time, using the same or different network connections.

  4. Tunneling protocol - Wikipedia

    en.wikipedia.org/wiki/Tunneling_protocol

    In computer networks, a tunneling protocol is a communication protocol which allows for the movement of data from one network to another. They can, for example, allow private network communications to be sent across a public network (such as the Internet), or for one network protocol to be carried over an incompatible network, through a process called encapsulation.

  5. Hole punching (networking) - Wikipedia

    en.wikipedia.org/wiki/Hole_punching_(networking)

    When an outbound connection from a private endpoint passes through a firewall, it receives a public endpoint (public IP address and port number), and the firewall translates traffic between them. Until the connection is closed, the client and server communicate through the public endpoint, and the firewall directs traffic appropriately.

  6. Generic routing encapsulation - Wikipedia

    en.wikipedia.org/wiki/Generic_Routing_Encapsulation

    In conjunction with PPTP to create VPNs.; In conjunction with IPsec VPNs to allow passing of routing information between connected networks.; In mobility management protocols.; In A8/A10 interfaces to encapsulate IP data to/from Packet Control Function (PCF).

  7. Virtual private network - Wikipedia

    en.wikipedia.org/wiki/Virtual_private_network

    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).

  8. Locator/Identifier Separation Protocol - Wikipedia

    en.wikipedia.org/wiki/Locator/Identifier...

    Endpoint ID (EID): An EID is an IPv4 or IPv6 address used in the source and destination address fields of the first (most inner) LISP header of a packet. Egress Tunnel Router (ETR) : An ETR is a device that is the tunnel endpoint; it accepts an IP packet where the destination address in the "outer" IP header is one of its own RLOCs.

  9. Secure Socket Tunneling Protocol - Wikipedia

    en.wikipedia.org/wiki/Secure_Socket_Tunneling...

    SSTP was introduced in 2007 [3] and available on Windows Vista SP1 and later, in RouterOS since version 5.0, and in SEIL since its firmware version 3.50. It is fully integrated with the RRAS architecture in these operating systems, allowing its use with Winlogon or smart-card authentication, remote-access policies and the Windows VPN client. [4]