Category Archives: Okta

Provisioning Exchange Online / Office 365 Custom Roles automatically from Okta

Natively, when connected to Office 365, Okta allows you to automatically provision users and/or groups. Additionally, Okta will assign licenses you select, and if configured, set predefined roles in Office 365. This means you have one locus of control, very nice.

Then, Exchange Online allows you to define custom roles where you can scope permissions for your users with far greater granularity compared to the default roles, Okta won’t detect or provision users into these custom roles.

As this was a business requirement for a customer, I coded up a small proof of concept you can schedule that will read membership of selected groups in Okta through the Okta API, then ensure that ONLY those members are in the matching role groups in Exchange Online.

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How to retrieve all Okta groups including their members using Powershell

Okta exposes a very useful API, with which I’ve been working for a while to ensure business fit for certain scenario’s that Okta and/or Office 365/Azure don’t fully support yet.

One of those scenario’s requires information about certain groups and their members. I’m narrowing the selection down to just pure Okta groups, but any groups (e.g. AD Synced) can be returned with below code by adjusting the filter in the retrieveAllOktaGroups function.

  1. First, you will need an Okta token to use with Powershell’s REST functions, this is the easiest part.
  2. Okta’s API’s are customer specific, so your $OktaAPIBaseURL parameter should be something like “https://companyname.okta.com”
  3. Run the retrieveAllOktaGroupsAndMembers function below with the token as a parameter
  4. Remember that Okta tokens expire if not used for a while

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