Planning for Authentication
on a Link
This section contains planning information
for providing authentication on the PPP link. Chapter 5, Setting Up Point-to-Point Protocol Authentication contains tasks for implementing PPP authentication
at your site.
PPP offers two types of authentication, PAP, which is described
in detail in Password Authentication
Protocol (PAP) and CHAP, which is described in Challenge-Handshake Authentication
Before you set up authentication on a link, you must choose
which authentication protocol best meets your site's security policy.
Then, you set up the secrets file and PPP configuration files for
the dial-in machines, or callers' dial-out machines, or both types
of machines. For information about choosing the appropriate authentication
protocol for your site, see Why
Use PPP Authentication?.
This section includes the following information:
Planning information for both PAP and CHAP authentication
Explanations of the sample authentication scenarios
that are shown in Figure 2–3 and Figure 2–4
For tasks about setting up authentication, see Chapter 5, Setting Up Point-to-Point Protocol Authentication.