EAP-TLS: Strategies for getting the right certificate to the right user

Chevalier Violet chevalier.violet at gmail.com
Tue Sep 12 06:29:54 CEST 2017

Hi all,

Thanks for all the thoughts. It's much appreciated to know that maybe it's
not just n00bness that is causing me to struggle with this!

I ended up making a pw protected page on my website (sigh)--but the limits
of that solution without internet access are pretty obvious I'd say!

And never mind that using TTLS-PAP with passwords saved as SSHA-512 doesn't
work on the iphone... !!! That's kinda insane if you ask me. But obviously
apple didn't!

Getting certs on the iPhone has been a real hassle--it'd be easier with mac
or windows machines around because I could use iTunes, but anyway, it has
been done through the website option!

Now, I can't get EAP-TLS to work on my iPhone because I can't choose "mode"
EAP-TLS. Instead, it continually asks me for the username & pass, which is
precisely what I'm trying to avoid! I think there may be someway to signal
that my wifi prefers TLS mode that I don't know about.

If you have help on that point, that'd be great, and sigh&thanks!


PS Indeed my routher is not exactly hotspot 2.0 or captive portal compliant!

On Mon, Sep 11, 2017 at 10:22 AM, Chevalier Violet <
chevalier.violet at gmail.com> wrote:

> I've been googling around and kind of surprised to not be seeing a ton of
> resources about this. Maybe you all can help!
> EAP-TLS: Strategies for getting the right certificate to the right user.
> It needs to be relatively automated. I do have users coming by with BYOD
> devices, e.g. iPhones (omg they're super finicky about the freeradius setup
> but that's another story!), frequently when I'm not around to set them up.
> Users are starting with no internet access.
> I was thinking maybe of the following:
> 1) Use some kind of TTLS-MSCHAPv2 thing with a standard user & password
> for guests that would change every so often. Maybe let them use the
> internet either i) for a few minutes at a time or ii) only to access a page
> on the internal network from which they could download the guest
> certificate that would allow them to connect via EAP-TLS? 3) the certs
> would expire after a few days.
> I have been struggling to get even my own iPhone to have the proper cert!
> On the bright side, my two linux machines are now working with EAP-TLS so
> there's hope for me! I wish I could just put the certs on a USB key but
> that doesn't work for phones. And it's a bunch of Linux machines, no
> Windows or Macs around. Excuse me if this is a n00b question.
> Thanks everyone!
> PS At this link:
> https://github.com/FreeRADIUS/freeradius-server/issues/2045#
> issuecomment-324641610
> Arr2036 mentions that the hot spot 2.0 standards set out how this could
> work, with auto-renewing certs and the whole 9 yards. I wasn't able to find
> how to make that work for linux, for instance with freeradius. Thanks!

"Do not speak, unless it improves on silence."  -- Buddha

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