[Serusers] RADIUS between multiple domains + Fail Over Gateways

[Alan Litster]

We I get it to do auth for both remote and local it is using the same realm,
should this cause a problem?
Disabling remote auth makes it work correctly. So is this going to be a
problem with the SUAs?

I don't see any harm with doing auth at both ends but if it's going to cause
a problem then we'll have to only do it on the local gateway side.

At present we are using mainly Vega gateways but have the one Cisco 5300, we
will be standardising on Cisco. I don't know how they behave on busy.
Is error 486 the standard? I'll give that a go.

Thanks klaus

Regards,

Alan

-----Original Message-----
From: Klaus Darilion [mailto:klaus.mailinglists at pernau.at]
Sent: 29 April 2004 15:35
To: Alan Litster
Cc: SER Mailing List
Subject: Re: [Serusers] RADIUS between multiple domains + Fail Over
Gateways


Are you challenging the INVITE two times (remote and local)? So do you
use the same realm both times or different ones? I think using the same
realm two times will confuse the UAs and the proxies. Iy ou are using
different realms, the UA must support multiple realms/users/passwords.

As your local proxy does authentication using the remote radius server,
it is not necessary to challenge the INVITE at the remote proxy.

How does the GW behalf it is busy, will it send back '486 busy'? Just
catch failures t_on_failure and in the failure route add another branch
to the second gw and resend the message.

klaus

Alan Litster wrote:
> Hello List,
>
> I've been using SER with RADIUS successfully now for a few months and am
> very pleased with the result. It's used for authenticating users accessing
> our gateways.
> I know have a new requirement to extend this to provide authentication for
> remote domains.
> The setup being as follows.
>
> We've got SER running with FreeRADIUS, then at the remote sites we will
have
> the same plus Asterisk that is to act as a local gateway.
> I've configured the local FreeRADIUS instance to proxy the requests for
the
> remote SIP domains to the remote RADIUS server. Unfortunately this doesn't
> work and I'm not sure why.
> The SUA gets asked by the remote SIP proxy to authenticate, it then
forwards
> the INVITE to the local SER instance which then gets the LOCAL RADIUS to
do
> another auth. This doesn't work. However if I disable the local auth and
> leave the remote auth enabled it works fine.
>
> Has anyone successfully managed to get proxied radius auth to work?
>
> My other question is to do with getting SER to send the INVITE to a
> different gateway if the primary one is at capacity/out of action? Is
there
> an example of this sort of config?
>
> Kind Regards,
>
> Alan
>
>
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