Re: User authentication parallelism

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I do not believe it is much difficult. I also do not believe I am going to work on something like that, but if there is an MR I will certainly review it.

On January 15, 2020 10:44:29 AM UTC, Florian Domain <domain.florian@xxxxxxxxx> wrote:
>Hi,
>
>Indeed, it works with a passcode entry. However the push notification
>on mobile device is really nice for the user experience.
>How difficult would it be to move ocserv's security module to a
>multi-threaded architecture ? Is it a complete rework ?
>
>I'm also getting in touch with a DUO software engineer to grab more
>info on this issue.
>
>Regards,
>
>Florian D.
>
>Le mar. 14 janv. 2020 à 09:04, Nikos Mavrogiannopoulos
><n.mavrogiannopoulos@xxxxxxxxx> a écrit :
>>
>> On Mon, Jan 13, 2020 at 4:55 PM Florian Domain
><domain.florian@xxxxxxxxx> wrote:
>> >
>> > Hi Nikos,
>> >
>> > Thanks for your reply.
>> >
>> > I did some tests with two users trying to connect at the same time,
>> > and ocserv is not blocking at username/password/LDAP stages, but
>only
>> > when duo has sent its notification to user's device. So as you
>said,
>> > it may be a limitation of the duo PAM module.
>>
>> Interesting. Seeing the log it may be that this module blocks until a
>> response has been received off-the-line. That means that ocserv's
>> architecture of co-routines for PAM cannot really accommodate it for
>> multiple users. The module itself can be changed to ask for a user
>> confirmation on PIN entry similarly to asking for a password but
>> accepting any input (inconvenient but it will allow multiple users to
>> login), or alternatively ocserv's security module could be moved to a
>> multi-threaded architecture (for PAM only or for all requests).
>>
>> regards,
>> Nikos

-- 
Sent from my mobile. Please excuse my brevity.

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