You are testing physical security measures as part of a pen test team. Upon entering the lobby of the building, you see the entrance has a guard posted at the lone entry. A door leads into a smaller room with a second door leading into the interior of the building.
If you took a test on college football history, you know it would contain questions about Alabama. If you made one on trumpet players, there’d be one about Dizzy Gillespie. And if took one on trumpet players, there’d be one about Dizzy Gillespie. And if you take a test on physical security measures for Certified Ethical Hacker, you are going to be asked about the man trap. They love it that much.
A mantrap is nothing more than a locked space you can hold someone in a while verifying their right to proceed into the secured area. It’s usually a glass-walled room that locks the exterior door as soon as you enter.
Then, there are some authentication mechanisms such as a smart card with a PIN or a biometric system. Assuming the authentication is successful, the second door leading to the interior of the building will unlock, and the person is allowed to proceed. If it’s not successful, the doors open and the person is allowed to continue. If it’s not successful, the doors will remain locked until the guards can check things out. As an aside, in addition to authentication, some a man trap is also referred to in some definition as an airlock.