Strange problem regarding PPTP and FreeRADIUS

[Ali Majdzadeh]

Hello All
I have configured PopTop server to work with FreeRADIUS. pptpd is configured
to use mschap-v2 and mppe-128 and I have enabled the corresponding module in
FreeRADIUS. When I turn on the debugging mode of FreeRADIUS, I get the
following:

rad_recv: Access-Request packet from host 192.168.1.15 port 55483, id=227,
length=153
      Service-Type = Framed-User
      Framed-Protocol = PPP
      User-Name = "\000ila"
      MS-CHAP-Challenge = 0x78b650db2a6af8bc8bc3435c7a385905
      MS-CHAP2-Response =
0x6e009982bf378318ac706da61a063b70682d0000000000000000e3dbbe517ba9dc7a18dfe5660208bdc1f370b5d7836516f8
      NAS-IP-Address = 0x0f01a8c0e85adab7e41be2bf081ce2bfb005dab7e41be2bf32
      NAS-Port = 0
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
[mschap] Found MS-CHAP attributes.  Setting 'Auth-Type  = mschap'
++[mschap] returns ok
[suffix] No '@' in User-Name = "", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns notfound
[files] users: Matched entry DEFAULT at line 172
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
[pap] WARNING! No "known good" password found for the user.  Authentication
may fail because of this.
++[pap] returns noop
Found Auth-Type = MSCHAP
+- entering group MS-CHAP {...}
[mschap] No Cleartext-Password configured.  Cannot create LM-Password.
[mschap] No Cleartext-Password configured.  Cannot create NT-Password.
[mschap] Told to do MS-CHAPv2 for  with NT-Password
[mschap] FAILED: No NT/LM-Password.  Cannot perform authentication.
[mschap] FAILED: MS-CHAP2-Response is incorrect
++[mschap] returns reject

Please note those two highlighted lines, the User-Name is "\000ila" while
what I have used as the username is "ali". Also, NAS-IP-Address is somehow
encrypted.
I searched a lot, but I could not find any similar problem. Any ideas?

Warm Regards
Ali Majdzadeh Kohbanani
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeradius.org/pipermail/freeradius-users/attachments/20100912/bb2166b2/attachment.html>