Cisco 1700 Series Specifications download pdf (Page 39)

2-5

Cisco 1700 Series Router Software Configuration Guide

78-5407-03

Chapter 2 Configuring Security Features

Configuring a Virtual Private Dial-Up Network

Complete the following tasks to configure a virtual private dial-up network

(VPDN). Start in global configuration mode.

Configuring Firewalls

Basic traffic filtering is limited to configured access list implementations that

examine packets at the network layer or, at most, the transport layer, permitting

or denying the passage of each packet through the firewall. However, the use of

inspection rules in Context-based Access Control (CBAC) allows the creation and

use of dynamic temporary access lists. These dynamic lists allow temporary

openings in the configured access lists at firewall interfaces. These openings are

created when traffic for a specified user session exits the internal network through

the firewall. The openings allow returning traffic for the specified session (that

would normally be blocked) back through the firewall.

Refer to the Cisco IOS Security Configuration Guide, Release 12.2, for more

detailed information on traffic filtering and firewalls.

Command Task

Step1

vpdn enable Enable VPDN.

Step2

no vpdn logging Disable VPDN logging.

Step3

vpdn-group tag Configure a VPDN group.

Step4

request-dialin Specify the dialing direction.

Step5

protocol pppoe Specify the tunneling protocol as

Point-to-Point Protocol over Ethernet

(PPPoE).

Step6

end Exit router configuration mode.

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Cisco 1700 Series Specifications Page 39