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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. 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.

  4. Secure Socket Tunneling Protocol - Wikipedia

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

    [2] 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 ...

  5. Generic routing encapsulation - Wikipedia

    en.wikipedia.org/wiki/Generic_Routing_Encapsulation

    C (1 bit) Checksum bit. Set to 1 if a checksum is present. R (1 bit) Routing Bit. Set to 1 if Routing and Offset information are present. K (1 bit) Key bit. Set to 1 if a key is present. S (1 bit) Sequence number bit. Set to 1 if a sequence number is present. s (1 bit) Strict source route bit. Recur (3 bits) Recursion control bits. Flags (5 bits)

  6. 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.

  7. MPLS VPN - Wikipedia

    en.wikipedia.org/wiki/MPLS_VPN

    MPLS VPN is a family of methods for using Multiprotocol Label Switching (MPLS) to create virtual private networks (VPNs). MPLS VPN is a flexible method to transport and route several types of network traffic using an MPLS backbone. There are three types of MPLS VPNs deployed in networks today: 1. Point-to-point 2. Layer 2 (VPLS) 3.

  8. Next-generation firewall - Wikipedia

    en.wikipedia.org/wiki/Next-generation_firewall

    NGFWs include the typical functions of traditional firewalls such as packet filtering, [4] network- and port-address translation (NAT), stateful inspection, and virtual private network (VPN) support. The goal of next-generation firewalls is to include more layers of the OSI model , improving filtering of network traffic that is dependent on the ...

  9. Point-to-Point Protocol - Wikipedia

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

    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.