AAA and MD5 Configuration on SIP Calls

Question

Olease can anyone help in AAA and MD5 configuration on Cisco 3640 running SIP. My carrier told me that the only way that my calls can be Authenticated is thru AAAor MD5, eg -
Host:
Authentication ID:
Secret:
Please I need your help thank you in advance.
Knmezi

Answer 1

MD5 authentication works similarly to plain text authentication, except that the key is never sent over the wire. Instead, the router uses the MD5 algorithm to produce a "message digest" of the key (also called a "hash"). The message digest is then sent instead of the key itself. This ensures that nobody can eavesdrop on the line and learn keys during transmission.
These protocols use MD5 authentication:
OSPF
RIP version 2
BGP
IP Enhanced IGRP
For AAA configuration refer to following url;
http://www.cisco.com/en/US/products/sw/secursw/ps2138/products_configuration_example09186a008017ee15.shtml