RADIUS/PPPoE Dead Connections

[Jeremy Tregunna]

On 20-Dec-06, at 4:23 PM, Dominic Blais wrote:

> Try mpd instead of ppp, great performances... we're using it as a  
> pppoe
> concentrator for more than 100 simultaneous connections..

That's fine and dandy, but I've already got this box deployed, and I  
don't like making major changes mid-stream. Unless I can guarantee  
that mpd won't suffer this same issue, I'm not interested in even  
considering changing, I'm more interested in fixing my problem.

Regards;

Jeremy Tregunna

>
> See /usr/ports/net/mpd
>
> mpd4 is beta, don't try it for production.
>
>
>
>>
>> I've got a FreeBSD NAS and a FreeBSD RADIUS server (both running 6.1)
>> serving up access to a wireless network. In any event, everything
>> seems to work peachy when a user logs in and disconnects manually.
>> But if for instance, someone closes the lid on their laptop and their
>> wireless card powers off due to standby mode, the connection to the
>> NAS is broken and the disconnect request never makes it from the NAS
>> to the RADIUS server to inform it that the client went offline.
>>
>> Now then, I'm not so much worried about that stale entry staying on
>> the RADIUS server until the user tries to log in again (I don't care
>> much about time used, only bandwidth numbers); but ultimately it
>> would be nice to have one of two solutions:
>>
>> (1) A user tries to log in when he's already logged in, have it
>> disconnect that user and then log in; or
>> (2) Have the NAS send a Disconnect-Request to the RADIUS server  
>> when--
>> as in the above example--someone closes the lid on their laptop.
>>
>> An idle timeout isn't a workable solution for me, neither is a
>> session timeout; I need both to have no fixed limit for all clients.
>>
>> My ppp.conf file is basically defined as:
>>
>> ### ppp.conf begin
>>
>> default:
>>    set log Chat Command Phase
>>    enable pap
>>    allow mode direct
>>    enable proxy
>>    disable ipv6cp
>>    set radius /etc/radius.conf
>>    set mru 1492
>>    set mtu 1492
>>    accept dns
>>
>> ### end ppp.conf
>>
>> The relevant users portion is like:
>>
>> DEFAULT Auth-Type := System
>>          Service-Type := Framed-User,
>>          Framed-Protocol := PPP,
>>          Framed-IP-Address := 192.168.8.50,
>>          Framed-IP-Netmask := 255.255.255.0,
>>          Framed-Routing := Broadcast-Listen,
>>          Framed-MTU := 1492
>>
>> And the relevant portions of attrs is like:
>>
>> DEFAULT
>> 	Service-Type == Framed-User,
>> 	Framed-Protocol == PPP,
>> 	Framed-MTU == 1492,
>> 	Framed-Filter-ID =* ANY,
>> 	Reply-Message =* ANY,
>> 	Session-Timeout == 0,
>> 	Idle-Timeout == 0,
>> 	Port-Limit <= 2
>>
>> Any assistance would be greatly appreciated.
>>
>> Regards,
>>
>> Jeremy Tregunna
>>
>>
>>
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>
>
> -- 
> Dominic Blais
> Administrateur réseau
> Interplex Télécom Inc.
> http://www.interplex.ca
>
>
>
> !DSPAM:4589a963678325368818224!
>