Hello Guys, I am saddled with the task of blocking all user from loggin into the network devices except for few. the devices and users are not behind firewall. What they are asking is for anybody aside from the specific user should not even be presented with the prompt to imput username or password on putty or ssh clients.
Does any one know how I can get this done? MAC address came to my mind though but not sure how to implement is.
My Campus diagram is attached
