azure portal tenant sign in block exclude my tenant

Question

I want to block the PC(Client) so that only my tenant can sign in.

I want to prevent my pc from accessing other tenants (azure portal).
I want to allow logins only to the tenants I own (azure portal).

I need an idea. Is there any way?
Please help.

Best regard

Answer 1

Hi @아롬 황 • Thank you for reaching out.

Yes, this can be achieved by using Tenant Restriction. To apply tenant restrictions, you must configure your proxy to insert the Restrict-Access-To-Tenants header containing the list of permitted tenants into traffic destined for Azure AD. If the Restrict-Access-To-Tenants: <permitted tenant list> header is present, Azure AD only issues security tokens for the permitted tenants. If the users behind the proxy try to access any other tenant that is not in the list of permitted tenants within the Restrict-Access-To-Tenants header, they will get below error:

Below is a high level diagram of how it works:

To test it out, you can use Fiddler for a host-based approach.

Read more: Restrict access to a tenant

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