Hello dear friends,
I was wondering if the following could be possible, I don't know if this should belong to firewall or or any other subcategory.
Remote users connect to company using OpenVPN
They use a client side software on their laptops which connects to port 25005 to the company's server (license port)
Company server has limited licenses available for that software (10 licenses)
Users can start two or three instances of the software (for multiple projects) so they occupy two or three licenses.

Is there any way-possibility to limit the open port 25005 to allow only one connection per some/any IP?

Thank you so much in advance