Cisco 1710 Specifications download pdf (Page 33)

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Cisco 1710 Security Router Software Configuration Guide

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Chapter 2 Cisco 1710 Security Router Configuration

Configuring IP Security

IP Security (IPSec) is a framework of open standards for ensuring secure private

communications over IP networks. Based on standards developed by the Internet

Engineering Task Force (IETF), IPSec ensures confidentiality, integrity, and

authenticity of data communications across a public IP network. Cisco’s

realization of IPSec implements the Data Encryption Standard (DES) and triple

DES (3DES).

Refer to the Cisco IOS Security Configuration Guide, Release 12.1, for more

detailed information on IPSec.

Perform the following tasks to configure IPSec. Start in global configuration

mode.

Step 5

protocol pppoe Specify the tunneling protocol as PPPoE.

Step 6

end Exit router configuration mode.

Command Task

Step 1

crypto isakmp policy 10 Define an Internet Key Exchange (IKE)

policy, and assign the policy a priority. This

command places the router in IKE policy

configuration mode.

Step 2

hash algorithm Specify the hash algorithm for the policy.

Step 3

encryption encryption Specify the encryption for the policy.

Step 4

authentication pre-share Specify pre-share key as the authentication

method.

Step 5

exit Exit IKE policy configuration mode.

Step 6

crypto isakmp key name address ip-address Configure a pre-share key and static IP

address for each VPN client.

Step 7

crypto ipsec transform-set name

esp-encryption esp-hash algorithm-hmac

Define a combination of security associations

to occur during IPSec negotiations.

Step 8

crypto mib ipsec flowmib history tunnel

size size

Set the size of the tunnel history table.

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