Setting up a VPN server with pptp and RADIUS for all sorts ofclients

[Thibault Le Meur]

> I didn't meen a mistake, but was wondering if my radiusclient had a 
> wrong mapping, that requests NT-password instead of 
> User-password (as an 
> example)
> Here is the output from the radius server:
>       
> 
>     Ready to process requests.
>     rad_recv: Access-Request packet from host xxx.xxx.xxx.xxx:1050,
>     id=109, length=152
>            Service-Type = Framed-User
>            Framed-Protocol = PPP
>            User-Name = "test"
>            MS-CHAP-Challenge = 0x68ac020b69febf7f1cf6338a1ed1c218
>            MS-CHAP2-Response =
>     
> 0x0800e2f1b3176070ca65916fe24cce80d271000000000000000047f1823b
> 3c33996107424059c73866a135b07e51e08c2f4a
> 
>            Calling-Station-Id = "yyy.yyy.yyy.yyy"
>            NAS-IP-Address = xxx.xxx.xxx.xxx
>            NAS-Port = 0
>      Processing the authorize section of radiusd.conf
>     modcall: entering group authorize for request 0
>     radius_xlat:  '/var/log/radius/radacct//detail-07022007'
>     rlm_detail:
>     /var/log/radius/radacct/%{Client-IP-Address}/detail-%d%m%Y expands
>     to /var/log/radius/radacct//detail-07022007
>      modcall[authorize]: module "detail" returns ok for request 0
>      modcall[authorize]: module "attr_filter" returns noop 
> for request 0
>      modcall[authorize]: module "chap" returns noop for request 0
>      rlm_mschap: Found MS-CHAP attributes.  Setting 
> 'Auth-Type  = mschap'
>      modcall[authorize]: module "mschap" returns ok for request 0
>        rlm_realm: No '@' in User-Name = "test", looking up realm NULL
>        rlm_realm: Found realm "NULL"
>        rlm_realm: Adding Stripped-User-Name = "test"
>        rlm_realm: Proxying request from user dupontd to realm NULL
>        rlm_realm: Adding Realm = "NULL"
>        rlm_realm: Authentication realm is LOCAL.
>      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
>      modcall[authorize]: module "files" returns notfound for request 0
>     rlm_ldap: - authorize
>     rlm_ldap: performing user authorization for test
>     radius_xlat: 
>     
> '(|(&(uid=test)(ulhcharte=TRUE))(&(eduPersonPrincipalName=test
> )(ulhcharte=TRUE)))'
> 
>     radius_xlat:  'dc=univ-lehavre,dc=fr'
>     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 zzz.zzz.zzz.zzz:389, authentication 0
>     rlm_ldap: setting TLS CACert File to /etc/ssl/certs/cachain.txt
>     rlm_ldap: setting TLS CACert Directory to /etc/ssl/certs/
>     rlm_ldap: setting TLS Require Cert to demand
>     rlm_ldap: starting TLS
>     rlm_ldap: bind as / to ducati.univ-lehavre.fr:389
>     rlm_ldap: waiting for bind result ...
>     rlm_ldap: Bind was successful
>     rlm_ldap: performing search in dc=univ-lehavre,dc=fr, with filter
>     
> (|(&(uid=test)(ulhcharte=TRUE))(&(eduPersonPrincipalName=test)
> (ulhcharte=TRUE)))
> 
>     rlm_ldap: looking for check items in directory...
>     rlm_ldap: Adding macAddress as Mac-Addr, value 00:30:48:24:A9:C3 &
>     op=21
>     rlm_ldap: looking for reply items in directory...
>     rlm_ldap: Adding radiusTunnelType as Tunnel-Type, value 13 & op=11
>     rlm_ldap: Adding radiusTunnelMediumType as 
> Tunnel-Medium-Type, value
>     6 & op=11
>     rlm_ldap: Adding radiusTunnelPrivateGroupId as
>     Tunnel-Private-Group-Id, value 40 & op=11
>     rlm_ldap: Adding eduPersonPrimaryAffiliation as Class, 
> value member
>     & op=11
>     rlm_ldap: Adding ulhcharte as Filter-Id, value TRUE & op=11
>     rlm_ldap: Adding macAddress as Mac-Addr, value 00:30:48:24:A9:C3 &
>     op=11


You see nothing like "Adding userPassword" here.

For instance you could have something like:
rlm_ldap: Added password
rlm_ldap: Adding myldapNTPassword

Could the freeradius admin check:
* the ldap {} section: see the "password_attribute =" line (till FR 1.1.4)
* the mapping in ldap.attrmap


>      rad_check_password:  Found Auth-Type MS-CHAP
>     auth: type "MS-CHAP"
>      Processing the authenticate section of radiusd.conf
>     modcall: entering group MS-CHAP for request 0
>      rlm_mschap: No User-Password configured.  Cannot create 
> LM-Password.
>      rlm_mschap: No User-Password configured.  Cannot create 
> NT-Password.
>      rlm_mschap: Told to do MS-CHAPv2 for dupontd with NT-Password
>      rlm_mschap: FAILED: No NT/LM-Password.  Cannot perform 
> authentication.
>      rlm_mschap: FAILED: MS-CHAP2-Response is incorrect

How is/are your password(s) stored on the Ldap directory: in clear text,
MD5-hashed, SHA-Hased, NTLM-Hashed ?
What is/are the Ldap attribute(s) used to store your password(s) ?

Thibault