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