RADIUS/PPPoE Dead Connections

[Dominic Blais]

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

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