[c-nsp] authentication attempt using RADIUS server fails

[teklay gebremichael]

hello,

I have installed free Radius server for authentication. i have also configured 
the Radius server to use a database for auth. from the localhost running radrest 
works fine. and for testing purpose i configured a Cisco 2950 switch to use 
radius server for username and password to login. at the beginning it 
authenticated successfully. but later the switch started to reject 
authentication even when i try to reconfigure with the same commands.  when i 
run radiusd -X from the radius server the following error was found.
................
++[pap] returns updated
Found Auth-Type = PAP
# Executing group from file /usr/local/etc/raddb/sites-enabled/default
+- entering group PAP {...}
[pap] login attempt with password "�ӴeV��?$N�E??�"
[pap] Using CRYPT password "ju9ubTh7VCKmw"
[pap] Passwords don't match
++[pap] returns reject
Failed to authenticate the user.
  WARNING: Unprintable characters in the password.       Double-check the shared 
secret on the server and the NAS!
Using Post-Auth-Type Reject