Logging config to get certificate details

Jim Potter j.potter at bathspa.ac.uk
Mon Mar 25 10:29:19 CET 2019

Hi Alan,

OK, thanks for the advice here. Historically, everyone has set up their
devices manually, and I have a suspicion that some have been told to ignore
the certificate, so if I do set up a rogue access point, this WILL catch
anyone with this configured, correct?



On Mon, 25 Mar 2019 at 09:15, Alan DeKok <aland at deployingradius.com> wrote:

> On Mar 25, 2019, at 5:06 AM, Jim Potter <j.potter at bathspa.ac.uk> wrote:
> > So doesn't the client return a PEAP request containing the MSCHAPv2
> request
> > encrypted using the server certificate?
>   No.
>   PEAP essentially sets up a TLS connection between the two endpoints.  It
> then sends MS-CHAPv2 data inside of the TLS tunnel.
>   The MS-CHAPv2 is protected via the TLS protocol.  It is *not* "encrypted
> using the server certificate".
> > My hope was that if a client device
> > wasn't using a cert at all,
>   The client device gets the server cert sent to it by the server, as part
> of the TLS exchange.  The client device is free to *ignore* this server
> certificate.
> > I could see the format of the reply or
> > something similar... but then if the clients are using whatever cert is
> > sent out, but not validating it, that wouldn't show up.
>   Yes.
> > OK, so, plan B - if I set up a rogue access point (FreeRadius WPE or
> > similar with a self signed certificate), I could see who connects
> > regardless of the dubious cert, then chase them up. Would that work?
>   People will connect if they configure it manually.  Which most won't.
>   There really isn't any point in doing this.  You won't get any useful
> information from it.
>   Alan DeKok.
> -
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Jim Potter
User Platform Engineer
IT Services
Bath Spa University

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