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https://issues.apache.org/jira/browse/GUACAMOLE-96?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16645610#comment-16645610
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Nick Couchman commented on GUACAMOLE-96:
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[~mike.jumper] Are you working on documentation for this? I probably could
work on it, but I don't have it installed anywhere at the moment. I can do
that if it would help - let me know.
> Two factor authentication with Google Authenticator
> ---------------------------------------------------
>
> Key: GUACAMOLE-96
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-96
> Project: Guacamole
> Issue Type: New Feature
> Components: Documentation, guacamole-client
> Reporter: L.J. van Ruiten
> Assignee: Michael Jumper
> Priority: Major
> Fix For: 1.0.0
>
> Attachments: guacamole-auth-totp-01-enroll-01-details-hidden.png,
> guacamole-auth-totp-01-enroll-02-details-shown.png,
> guacamole-auth-totp-01-enroll.png, guacamole-auth-totp-02-verify.png
>
>
> We have a few critical systems that are accessible through Guacamole and we
> have had some clients requesting a safer way to login. Two factor
> authentication is probably the best and easiest way to improve on the current
> username/password login, and I can imagine that this is something that other
> companies using Guacamole would also be interesting in this feature.
> I already did some tinkering myself and I found that Google Auhtenticator is
> simple to use, does not require any configuration (like you would with SMS
> codes) easy to implement and the "client" side of the authentication (the
> part that generates the codes) is easily integrated into existing apps.
> So far I have got Google Authenticator "kinda working". What I did is:
> - Started with guacamole-auth-jdbc as base
> - Added a secret key to a user account that is randomly generated upon
> creation. Also added a boolean field to indicate wether TFA is required for
> loggin in.
> - Used the GuacamoleInsufficientCredentialsException to redirect the user the
> a second screen asking for a TFA code after loggin in with the username and
> password.
> However as said before this only "kinda works" because:
> I have only gotten the TFA enable button to appear in the user's managing
> page, so it can only be enabled by administrators and that's also where I put
> the secret key shows up, so users can't find it themself.
> For as far as I could find the previous point cannot be done with just the
> guacamole-ext api. Even with the new API that enables you to insert HTML
> parts, you would also need an API endpoint to provide the secret key or
> ideally generate a QR code that Google Auhtenticator can read to bind a
> device to the account (I would like it to appear in the user's preference
> page).
> So in summary if other people are interested I would be willing to contribute
> this, but I would need some directions and I have a few questions:
> - Am I right that it is currently not possible to add an API endpoint just
> using guacamole-ext to provide the QR codes?
> - What would be the way to implement this? Personally I thought that adding
> these options to the user's page would be the easiest.
> - Is this a feature you would like me to work on and contribute?
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