ADDS or LDAP server, over SSL, for remote password resets?

My organization is looking to employ an outside third-party in assisting with password resets for our organization after hours.
Their requirement is to have remote access over the internet to our AD to reset passwords accordingly.
We have a single forest, with 2 domains.
I am wondering, would it be best to spin up a 2012 R2 Domain Controller and also make it a global catalog, and then provide that company our Root Certificate and the self-signed certificate of the Domain Controller, so that they can remote to it with their software?

Or is it better to make a new 2012 server that runs LDAP and setup remote access with the cert?
garryshapeAsked:
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McKnifeCommented:
Allow the question: Hire others just for doing password resets? Wouldn't it be cheaper to deploy a self service software that does that?

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garryshapeAuthor Commented:
I don't know, I'm not director of IT
Will SzymkowskiSenior Solution ArchitectCommented:
I would also agree with McKnife in it would be much easier to setup a self service password reset for your users. This would be cost savings and also no addtional configuraiton. You would just need to do End User Training.

Some SelfService Password Reset Programs below...

NervePoint (free)
https://www.nervepoint.com/en/content/free-password-manager-software

Or

ManageEngine Password Reset
https://www.manageengine.com/products/self-service-password/self-service-password-reset.html

However, if you need to setup these external users then the best approach would be to set them up with a VPN connection where they would have access to a workstation or member server that has RSAT installed and only providing them with Reset Permissions on specific OU's where users reside.


Will.
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garryshapeAuthor Commented:
Yeah for some reason a VPN connection is not being provided with that kind of an access to accommodate them per the request of directors on both sides, I'm not sure why.
The premise for this over a self-service is that people may or may not always have access to the self-service and they want a person they can speak to over the phone.
While I myself cannot think of a common scenario to justify that, it is what it is sometimes.

It's some BlackBoard student services they use something called ServiceDesk or Service Desk...
Will SzymkowskiSenior Solution ArchitectCommented:
I dunno, personally this seems like a make work project. You have a couple of simple solutions for this. There is no need to setup another DC with cert etc etc..

Will.
garryshapeAuthor Commented:
Accepting solutions as viable barring any organizational approval issues.
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