Appendix C
RADIUS Attributes
Table C-6
RADIUS (IETF) Attributes
Attribute
Number Description
User-Name
1
User-Password
2
CHAP-Password
3
NAS-IP Address
4
78-14696-01, Version 3.1
Name of the user being
authenticated.
User password or input following an
access challenge. Passwords longer
than 16 characters are encrypted
using IETF Draft #2 or later
specifications.
PPP (Point-to-Point Protocol) CHAP
(Challenge Handshake
Authentication Protocol) response to
an Access-Challenge.
IP address of the AAA client that is
requesting authentication.
User Guide for Cisco Secure ACS for Windows Server
IETF Dictionary of RADIUS AV Pairs
Type of
Inbound/
Value
Outbound Multiple
string
Inbound
string
Outbound No
string
Outbound No
ipaddr
Inbound
No
No
C-13