How to protect WiFi password?

Question

System administration

Good afternoon colleagues,

the question is, what are the mechanisms to secure the local network in case of staff turnover?

let's say an employee worked in a company where there was an ordinary WiFi router, quit, but the password from the corporate WiFi was preserved. in theory, he can come to the office and use free Wi-Fi. Is there a technology to protect against this?

you can even just throw links for me to read, tk. no ideas at all how and where to start

Answer 1

In an organization, you do not need to use a password, but you need to use authorization tied to the user's login and password, for example, through Radius.

Answer 2

Just change your password periodically. Everything is for you, you don't need anything else.

Answer 3

Given the general unlimited, the question looks a little strange (unless, of course, you are worried about "doubtful" traffic, but current hard workers can catch up with it).
If you still need it:
In college / university, we had a local layer between routers and the "outside world" with the need to log in through a personal account (provided by laboratory assistants) I have no idea what they were spinning there, maybe self-made, but the search gave it out .
The question, as such, does not solve, but timely cleaning of outdated accounts once every 2 weeks / month, say, is the most optimal.

Answer 4

Access to the corporate network only through the "white list" of MAC addresses
Employees' phones - to the guest network with authorization (well, or change the password once a week)

Answer 5

as an option - filtering by MAC, but on the condition that you have previously copied the poppies of all devices and know who owns what

Answer 6

Access to wifi - on poppies and there will be Happiness.