Disconnect users hanging

[Clayton Alves]

Freeradius already have this script. It's called "checkrad".

It is included in freeradius package.

To enable it, you will need to uncomment in dialup.conf the following
parameters: simul_count_query, simul_verify_query.

Restart freeradius.

It works like this: Every time freeradius receives an auth packet, if the
user is hanging in database, freeradius calls the checkrad script. The role
of this is script is to connect back to the router and check if the user is
really connected to it.

It then returns to freeradius an exit code (1 means user is already
connected to the router (multiple login attempt), 0 means user is hang on
database). In case of '0', freeradius let the user login.

You can roll your own script if you want to. It's easy. I've made this
simplified version for my needs (only work with mikrotik routers):
https://gist.github.com/claytonaalves/1601702


Clayton A. Alves <http://claytonaalves.github.com>
 *claytonaalves*
 +55 66 9233-3406


2014-03-18 13:34 GMT-04:00 Julio Fsnet <julio.fsnet at gmail.com>:

> huum thank's. I'll test this alternative. What I would like is to put a
> script in the processes of freeradius for every time a user attempts to
> authenticate, do check if you are hanging or not. If he drops hanging
> before continuing.
>
>
> 2014-03-18 14:09 GMT-03:00 Clayton Alves <clayton.aa at gmail.com>:
>
>> I've got the same problem using mikrotik routers.
>> Sometimes it just doesn't send AcctTerminate packets. Maybe its a router
>> problem.
>>
>> The solution I found is set Interim-Update time to 5 minutes and put this
>> script in cron to run regularly.
>>
>> https://gist.github.com/claytonaalves/9165004
>>
>> This works for me... maybe it helps.
>>
>>
>> Clayton A. Alves <http://claytonaalves.github.com>
>>  *claytonaalves*
>>  +55 66 9233-3406
>>
>>
>> 2014-03-18 11:11 GMT-04:00 Julio Fsnet <julio.fsnet at gmail.com>:
>>
>> Yes, I am use MySQL with InnoDB Engine
>>>
>>>
>>> 2014-03-18 8:43 GMT-03:00 Clayton Alves <clayton.aa at gmail.com>:
>>>
>>>> Are you using MySQL?
>>>> If 'yes', are the tables using InnoDB engine ?
>>>>
>>>> Clayton A. Alves <http://claytonaalves.github.com>
>>>>  *claytonaalves*
>>>>  +55 66 9233-3406
>>>>
>>>>
>>>> 2014-03-17 10:12 GMT-04:00 Julio Fsnet <julio.fsnet at gmail.com>:
>>>>
>>>>>  I have a problem. When the user tries to connect and already has a
>>>>> connection to it, an error pops multiple logins. I need to write this mysql
>>>>> error log somewhere or else knock the hanging connection, how can I do this?
>>>>>
>>>>>
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