The PPTP: point-to-point tunnel agreementPeer-to-peer tunnel agreement (to Tunneling PPTP: were the PointProtocol) is a kind of support agreement virtual private network network technology. Through this agreement, remote users can pass MicrosoftWindowsNT workstation, Windows 95 and Windows 98 operating systems …
The PPTP: point-to-point tunnel agreementPeer-to-peer tunnel agreement (to Tunneling PPTP: were the PointProtocol) is a kind of support agreement virtual private network network technology. Through this agreement, remote users can pass MicrosoftWindowsNT workstation, Windows 95 and Windows 98 operating systems and other equipped with the point-to-point protocol system safe access to the company network, and can dial-up concatenation localThe ISP, through the Internet security link to the company network.The PPTP can be used to establish the PPP in IP networkConversation tunnel. In this configuration, the PPTP tunnel and the PPP session in two the same machine operation, PNS. Call square as PPTPUse client/server structure to separate the current network access servers have some function and support virtual private network. PPTPAs a call control and management agreement, allowing server control or ISDN dial from processed into circuit-switched call accessing and initialization external circuit-switched connection.Only by PPTP PNS PAC and other system to implement, no need to know the PPTP. Dial-up network can connect with PAC without knowThe PPTP. Standard PPP client software can continue to operate in the tunnel on the PPP link.The use of the GRE PPTP expanded version to transmit the user the PPP packet. These enhancements allow for in PAC and PNSThe tunnel between user data transmission congestion control and provide low flow control. This mechanism allows efficient use of available bandwidth and tunnel and avoiding unnecessary retransmission and buffer overflow. PPTPNo provisions specific algorithm is used for low-rise control, but it really defines some communication parameters to support such algorithm work.configuration1, command line directly in the way the VPN configuration of PIX, i.e. PPTP PIX as VPDN server PPTP wayIP local pool pptp10.0.0.1-10.0.0.50//define a way into the VPDN dial PPTP after the IP address of the pool, obtained name is the PPTP. Here the 210.10.2.0?Righteousness range and don’t dial after the connection other computers into conflict, and according to the IP number dialed users to define addresses the size of the poolVPDN group VPDN – accept PPTP – dialin groupPPTPVPDN group VPDN – group PPP PPTP – authenticationpapVPDN groupPPTP – VPDN – GROUP PPP authenticationchapVPDN groupPPTP – VPDN – GROUP PPP authenticationmschapVPDN groupPPTP – VPDN – mppe encryption GROUP PPPauto//above the VPDN group for configuration PPTP related attributesVPDN group VPDN – group PPTP – are configurationAfter local PPTP//define above the VPND PPTP group to use local address for a start, ChiZu PPTP definedVPDN group VPDN – group PPTP – PPTP echo 60VPDN group are VPDN – group PPTP -Authentication local//here in the VPDN dial PPTP allocation for local password authentication user authentication, of course, also can choose AAA servers authentication belong to compare authentication, local convenient realizedSo VPDN test1 password* * * * * * * * *So VPDN test2 password* * * * * * * * *//user authentication for defining above the user accounts and passwords, can define multipleVPDN enable outside//pix of the firewall in VPDN function outside mouth reinstate, or in other interface applications
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