Disconnect on Accounting Octet Quota

Ali Jawad alijawad1 at gmail.com
Wed Jul 16 19:43:54 CEST 2014

Another thing, can I do the math externally if my NAS pptpd and OpenVPN
dont support the feature I need  ?I.e. send a disconnect/stop packet ? That
would not be freeradius but pptpd or OpenVPN in that case I assume ?

On Wed, Jul 16, 2014 at 7:37 PM, Ali Jawad <alijawad1 at gmail.com> wrote:

> Thanks all for the input. I do use plain old pptpd and openvpn with
> freeradius and a mysql backend. No mikrotik or chillispot
> On Wed, Jul 16, 2014 at 4:01 PM, Winfield, Alister <
> Alister.Winfield at bskyb.com> wrote:
>>  Look at the network devices documentation there are many ways of doing
>> it for example.
>>    1. Device has quotas and it manages them for you in some way.
>>    2. Device has quotas and ‘asks’ you to make a decision by RADIUS
>>    (Often another authentication request with extra ‘quota’ attribute added).
>>    3. Device sends interim accounting and you use CoA to stop a session
>>    that goes over quota on receipt of interim accounting packet.
>>    4. Something else.
>> Basically its a function of the software+hardware you are using and not a
>> function of RADIUS itself (although RADIUS may be the control mechanism).
>>  Alister
>>   From: Ali Jawad <alijawad1 at gmail.com>
>> Reply-To: FreeRadius users mailing list <
>> freeradius-users at lists.freeradius.org>
>> Date: Wednesday, 16 July 2014 01:18
>> To: FreeRadius users mailing list <freeradius-users at lists.freeradius.org>
>> Subject: Disconnect on Accounting Octet Quota
>>   Hi
>> I did setup a max monthly quota check to limit the amount of B/W used by
>> a user. The test worked, BUT only after a user disconnects and reconnects.
>> While a user is connected he can go over limit and keep doing so. I did do
>> some reading and obviously the reason is that in radacct acctinputoctets
>> and acctoutputoctets are only set with a stop signal.
>>  Quote :
>> This attribute indicates how many octets have been received from the port
>> over the course of this service being provided, and can only be present in
>> Accounting-Request records where the Acct-Status-Type is set to Stop.
>>  My setup is quite simple ,I do use the below. Now the question is , is
>> there another approach to overcome this limitation ? Or can I force a
>> Acct-Status refresh of some sort without disconnecting users ?
>>  sqlcounter daily-BW-counter {
>>         counter-name = Daily-Session-Octets
>>         check-name = Max-Daily-Octets
>>         reply-name = Session-Timeout
>>         sqlmod-inst = sql
>>         key = User-Name
>>         reset = daily
>>  query = "SELECT SUM(AcctInputOctets) + SUM(AcctOutputOctets) FROM
>> radacct  WHERE UserName='%{%k}' AND UNIX_TIMESTAMP(AcctStartTime) +
>> AcctSessionTime > '%b'"
>>  }
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