In this tutorial. I will integrate my Active directory with Pfsense in order to authenticate Users from Active directory instead of using Pfsense's User manager.

The process will give you more options and will make managing users much easier. so in order to do that follow the following steps.

First open your Pfsense Web UI and click on System - > user manager

Next go to Servers Tab

Click + in the right corner

After you click on the + icon you will get the following page.

Fill these details accordingly, for help on how to fill these in check the below snapshot

Note: Make sure that your password is simple and contains only letters, no numbers or special characters e.g. Pfsense

When done click on Select and the result will be that you will be able to view the following OU/CN.

Now create a group on AD e.g. "PF" and create the same identical group name on Pfsense. On AD add any user to this group.

Then go back to pfsense - > system - > user manager -> goto Settings Tab - > from Authentication server select your AD and save

Now click on Diagnostic -> Authentication -> select your AD server

Type in your username and password for the user which you have added to the group pf in the AD and click test then you will see the result on top. "User: Pfsense authenticated successfully. this user is a member of these groups: pf