Packet-mode connections
include most dial-up connections, including the following:
async
group-async
serial
ISDN BRI
ISDN PRI
Packet-mode connections typically secure connections that pass traffic through the network
device. You use the ppp, network, and arap AAA commands to control packet-mode connections.
Table 32.2 offers a list with explanations of these commands.
These sections do not provide a complete breakdown of all possible commands,
but instead they introduce the more common commands. Please refer
to the documentation specific to your version of the IOS for a current listing of
all commands and options or use the incorporated Help function.
Packet-Mode Authentication Commands
Command Description
aaa authentication ppp
user if-needed tacacs+
AAA is used for PPP packet-mode challenges. The list user is
used first, and if unsuccessful, TACACS+ will be used.
aaa authorization network
tacacs+ if-authenticated
TACACS+ is used to determine whether the user is permitted to
make packet-mode connections if the user is authenticated.
interface async16 ppp
authentication chap user
This is a new command for this chapter in that it associates
an AAA function with an interface. Specifically, line async16 is
instructed to use the list user for CHAP authentication. Note that
an AAA server (RADIUS, and so on) is not used.