problem configuring freeradius with ldap user database

Sambuddho Chakravarty sc2516 at columbia.edu
Sat Jun 14 08:45:09 CEST 2008


Hello All

 I am experiencing a problem while trying to authenticate the
username/password in LDAP through a freeradius server. While a regular
telnet/ssh to the edge running a openLdap client / PAM module works fine
(It is able to authenticate) but the problem arises when trying to
authenticate using the freeradius server . 

This is what the log message looks like :

User-Name = "try"
        User-Password = "trialanderror"
        NAS-IP-Address = 127.0.0.1
        NAS-Port = 2
  Processing the authorize section of radiusd.conf
modcall: entering group authorize for request 0
  modcall[authorize]: module "preprocess" returns ok for request 0
  modcall[authorize]: module "chap" returns noop for request 0
  modcall[authorize]: module "mschap" returns noop for request 0
    rlm_realm: No '@' in User-Name = "try", looking up realm NULL
    rlm_realm: No such realm "NULL"
  modcall[authorize]: module "suffix" returns noop for request 0
  rlm_eap: No EAP-Message, not doing EAP
  modcall[authorize]: module "eap" returns noop for request 0
    users: Matched entry DEFAULT at line 152
    users: Matched entry DEFAULT at line 155
  modcall[authorize]: module "files" returns ok for request 0
rlm_ldap: - authorize
rlm_ldap: performing user authorization for try
radius_xlat:  '(uid=try)'
radius_xlat:  'ou=People,dc=example,dc=com'
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
rlm_ldap: attempting LDAP reconnection
rlm_ldap: (re)connect to 30.0.0.2:389, authentication 0
rlm_ldap: bind as / to 30.0.0.2:389
rlm_ldap: waiting for bind result ...
rlm_ldap: Bind was successful
rlm_ldap: performing search in ou=People,dc=example,dc=com, with filter
(uid=try)
rlm_ldap: Added password {crypt}$1$2Pl0Lm5O$ot8mrXYBaAg12RoBogNDK. in
check items
rlm_ldap: looking for check items in directory...
rlm_ldap: looking for reply items in directory...
rlm_ldap: user try authorized to use remote access
rlm_ldap: ldap_release_conn: Release Id: 0
  modcall[authorize]: module "ldap" returns ok for request 0
modcall: group authorize returns ok for request 0
  rad_check_password:  Found Auth-Type LDAP
auth: type "LDAP"
  Processing the authenticate section of radiusd.conf
modcall: entering group Auth-Type for request 0
rlm_ldap: - authenticate
rlm_ldap: login attempt by "try" with password "trialanderror"
rlm_ldap: user DN: uid=try,ou=People,dc=example,dc=com
rlm_ldap: (re)connect to 30.0.0.2:389, authentication 1
rlm_ldap: bind as uid=try,ou=People,dc=example,dc=com/trialanderror to
30.0.0.2:389
rlm_ldap: waiting for bind result ...
rlm_ldap: Bind failed with invalid credentials
  modcall[authenticate]: module "ldap" returns reject for request 0
modcall: group Auth-Type returns reject for request 0
auth: Failed to validate the user.
Delaying request 0 for 1 seconds
Finished request 0
Going to the next request
--- Walking the entire request list ---
Waking up in 1 seconds...
--- Walking the entire request list ---
Waking up in 1 seconds...


Here you can see that the authorization of a user 'try' having password
'trialanderror' works fine but authentication fails. The host running
the freeradius server is Fedora Core 5 running linux 2.6.25. Could you
please suggest where we are going wrong. I am sending you a copy of
the /etc/raddb/users file as well.


DEFAULT Auth-Type = System
        Fall-Through = 1

DEFAULT Auth-Type := LDAP
        Fall-Through = 0



Any help would be gratefully appreciated.

Thanks
Sambuddho
        





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