CCIE Practical Studies: Security (CCIE Self-Study)

Chapter 21. Virtual Private Dialup Networks

This chapter covers the following topics:

• L2F and L2TP overview

• VPDN process overview

• PPTP overview

• Configuring VPDNs

A virtual private dialup network (VPDN) is a way for a PPP client to gain access to a private network by dialing into an access server. The access server then determines whether it should forward the client's PPP session to a private network server via a virtual tunnel between the access server and the network server. The steps for the VPDN setup process are described in the section “Configuring VPDNs.” This technology might or might not be incorporated into the lab exam. It is covered in this book both as part of overall network security and as training material for its possible inclusion ...