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Appendix E PPTP
NN47922-501
PPTP and the Business Secure Router
When the Business Secure Router is deployed in such a setup, it appears as a PC
to the ANT.
In Windows VPN or PPTP Pass-Through feature, the PPTP tunneling is created
from Windows 95, 98, and NT clients to an NT server in a remote location. Using
the pass-through feature, users on the network can access a different remote server
using the Business Secure Router's Internet connection. In SUA/NAT mode, the
Business Secure Router is able to pass the PPTP packets to the internal PPTP
server (for example, NT server) behind the NAT. You must configure port
forwarding for port 1723 to have the Business Secure Router forward PPTP
packets to the server. In the case above as the remote PPTP Client initializes the
PPTP connection, the user must configure the PPTP clients. The Business Secure
Router initializes the PPTP connection hence; there is no need to configure the
remote PPTP clients.
Figure 158
Business Secure Router as a PPTP client
PPTP protocol overview
PPTP is very similar to L2TP, since L2TP is based on both PPTP and L2F
(Cisco’s Layer 2 Forwarding). Conceptually, there are three parties in PPTP,
namely the PNS (PPTP Network Server), the PAC (PPTP Access Concentrator)
and the PPTP user. The PNS is the box that hosts both the PPP and the PPTP
stacks and forms one end of the PPTP tunnel. The PAC is the box that dials or
answers the phone calls and relays the PPP frames to the PNS. The PPTP user is
not necessarily a PPP client, it can also be a PPP server. Both the PNS and the
Business Secure Router
Содержание 222
Страница 14: ...14 Contents NN47922 501 ...
Страница 24: ...24 Tables NN47922 501 ...
Страница 30: ...30 Preface NN47922 501 ...
Страница 46: ...46 Chapter 2 Introducing the SMT NN47922 501 SMT menus at a glance Figure 6 SMT overview ...
Страница 70: ...70 Chapter 3 WAN and Dial Backup Setup NN47922 501 ...
Страница 78: ...78 Chapter 4 LAN setup NN47922 501 ...
Страница 100: ...100 Chapter 6 Remote Node setup NN47922 501 ...
Страница 104: ...104 Chapter 7 IP Static Route Setup NN47922 501 ...
Страница 132: ...132 Chapter 9 Network Address Translation NAT NN47922 501 ...
Страница 154: ...154 Chapter 11 Filter configuration NN47922 501 ...
Страница 158: ...158 Chapter 12 SNMP Configuration NN47922 501 ...
Страница 198: ...198 Chapter 15 Firmware and configuration file maintenance NN47922 501 ...
Страница 212: ...212 Chapter 17 Remote Management NN47922 501 ...
Страница 232: ...232 Appendix B Triangle Route NN47922 501 ...
Страница 252: ...252 Appendix D PPPoE NN47922 501 ...
Страница 260: ...260 Appendix F Hardware specifications NN47922 501 ...
Страница 270: ...270 Appendix G IP subnetting NN47922 501 ...
Страница 308: ...308 Appendix H Command Interpreter NN47922 501 ...
Страница 312: ...312 Appendix I NetBIOS filter commands NN47922 501 ...
Страница 336: ...336 Appendix L Brute force password guessing protection NN47922 501 ...