![]() ![]() Corporations can set up dedicated PPTP-enabled servers on their networks using Windows NT Server. No matter which type of tunneling you use, you must use a PPTP server. This type of tunneling must be supported by network access servers (NAS’s) or routers. Compulsory tunneling: Initiated by a PPTP server at an ISP.This type of tunneling does not require support from an Internet service provider (ISP) or network devices such as bridges. Voluntary tunneling: Initiated by the PPTP client (such as Microsoft Windows 95, Windows 98, Windows NT, or Windows 2000).The PPTP tunnel is responsible for authentication and data encryption and makes it safe to transmit data over unsecured networks. PPTP encapsulates Internet Protocol (IP), Internetwork Packet Exchange (IPX), or NetBEUI packets into PPP frames, creating a “tunnel” for secure communication across a LAN or WAN link. ![]() PPTP is an extension of PPP and is based on PPP negotiation, authentication, and encryption schemes. Remote users can securely access corporate local area network (LAN) resources using the Internet instead of having to use direct modem connections over the Public Switched Telephone Network (PSTN) or dedicated leased-line connections. Point-to-Point Tunneling Protocol (PPTP) allows the creation of virtual private networks (VPNs), which tunnel TCP/IP traffic through the Internet. PPTP is a data-link layer protocol for wide area networks (WANs) based on the Point-to-Point Protocol (PPP) and developed by Microsoft that enables network traffic to be encapsulated and routed over an unsecured public network such as the Internet. What is Point-to-Point Tunneling Protocol (PPTP)? Definition of Point-to-Point Tunneling Protocol (PPTP) in Network Encyclopedia. ![]()
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