Hi
I did setup pptpd with freeradius + mysql http://poptop.sourceforge.net/dox/radius_mysql.html.
pptpd "poptop"  works fine without freeradius, with freeradius and mysql, all seems fine apart from me not knowing what values to enter into the mysql tables of freeradius.

With no entries in database I get 

Ready to process requests.

rad_recv: Access-Request packet from host 127.0.0.1:45194, id=198, length=67
        Service-Type = Framed-User
        Framed-Protocol = PPP
        User-Name = "test"
        Calling-Station-Id = "193.227.186.146"
        NAS-IP-Address = 127.0.0.1
        NAS-Port = 0
  Processing the authorize section of radiusd.conf
modcall: entering group authorize for request 0
  modcall[authorize]: module "preprocess" returns ok for request 0
    rlm_realm: No '@' in User-Name = "test", looking up realm NULL
    rlm_realm: No such realm "NULL"
  modcall[authorize]: module "suffix" returns noop for request 0
radius_xlat:  'test'
rlm_sql (sql): sql_set_user escaped user --> 'test'
radius_xlat:  'SELECT id, UserName, Attribute, Value, op           FROM radcheck           WHERE Username = 'test'           ORDER BY id'
rlm_sql (sql): Reserving sql socket id: 4
rlm_sql (sql): User test not found in radcheck
radius_xlat:  'SELECT radgroupcheck.id,radgroupcheck.GroupName,radgroupcheck.Attribute,radgroupcheck.Value,radgroupcheck.op  FROM radgroupcheck,usergroup WHERE usergroup.Username = 'test' AND usergroup.GroupName = radgroupcheck.GroupName ORDER BY radgroupcheck.id'
radius_xlat:  'SELECT radgroupreply.id,radgroupreply.GroupName,radgroupreply.Attribute,radgroupreply.Value,radgroupreply.op  FROM radgroupreply,usergroup WHERE usergroup.Username = 'test' AND usergroup.GroupName = radgroupreply.GroupName ORDER BY radgroupreply.id'
rlm_sql (sql): User test not found in radgroupcheck
rlm_sql (sql): Released sql socket id: 4
rlm_sql (sql): User not found   <#######################
  modcall[authorize]: module "sql" returns notfound for request 0
  modcall[authorize]: module "mschap" returns noop for request 0
modcall: leaving group authorize (returns ok) for request 0
auth: No authenticate method (Auth-Type) configuration found for the request: Rejecting the user
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...
--- Walking the entire request list ---
Sending Access-Reject of id 198 to 127.0.0.1 port 45194
Waking up in 4 seconds...
--- Walking the entire request list ---
Cleaning up request 0 ID 198 with timestamp 4fbc8c9d


When I do add to radcheck -

INSERT INTO `radcheck` (`id`, `UserName`, `Attribute`, `op`, `Value`) VALUES
(11, 'test', 'Chap-Password', '==', 'test');

 I get 

rad_recv: Access-Request packet from host 127.0.0.1:46882, id=199, length=67
        Service-Type = Framed-User
        Framed-Protocol = PPP
        User-Name = "test"
        Calling-Station-Id = "193.227.186.146"
        NAS-IP-Address = 127.0.0.1
        NAS-Port = 0
  Processing the authorize section of radiusd.conf
modcall: entering group authorize for request 1
  modcall[authorize]: module "preprocess" returns ok for request 1
    rlm_realm: No '@' in User-Name = "test", looking up realm NULL
    rlm_realm: No such realm "NULL"
  modcall[authorize]: module "suffix" returns noop for request 1
radius_xlat:  'test'
rlm_sql (sql): sql_set_user escaped user --> 'test'
radius_xlat:  'SELECT id, UserName, Attribute, Value, op           FROM radcheck           WHERE Username = 'test'           ORDER BY id'
rlm_sql (sql): Reserving sql socket id: 3
radius_xlat:  'SELECT radgroupcheck.id,radgroupcheck.GroupName,radgroupcheck.Attribute,radgroupcheck.Value,radgroupcheck.op  FROM radgroupcheck,usergroup WHERE usergroup.Username = 'test' AND usergroup.GroupName = radgroupcheck.GroupName ORDER BY radgroupcheck.id'
radius_xlat:  'SELECT id, UserName, Attribute, Value, op           FROM radreply           WHERE Username = 'test'           ORDER BY id'
radius_xlat:  'SELECT radgroupreply.id,radgroupreply.GroupName,radgroupreply.Attribute,radgroupreply.Value,radgroupreply.op  FROM radgroupreply,usergroup WHERE usergroup.Username = 'test' AND usergroup.GroupName = radgroupreply.GroupName ORDER BY radgroupreply.id'
rlm_sql (sql): Released sql socket id: 3
rlm_sql (sql): No matching entry in the database for request from user [test]
  modcall[authorize]: module "sql" returns notfound for request 1
  modcall[authorize]: module "mschap" returns noop for request 1
modcall: leaving group authorize (returns ok) for request 1
auth: No authenticate method (Auth-Type) configuration found for the request: Rejecting the user <#################
auth: Failed to validate the user.
Delaying request 1 for 1 seconds
Finished request 1
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...
--- Walking the entire request list ---
Sending Access-Reject of id 199 to 127.0.0.1 port 46882
Waking up in 4 seconds...
--- Walking the entire request list ---
Cleaning up request 1 ID 199 with timestamp 4fbc8d01
Nothing to do.  Sleeping until we see a request.


I am lost here, please advice.