So we need sudo vi sudo and we need to enter the password and then.
Well, it's already here in this configuration field. This is what it's all about. Make
sure that you have defaults, timestamp type is global and timestamp timeout is 240.
Do notice that when you change this value, you probably just created a sudo authentication token only
when that is expired and you use the sudo password again, the new password will be valid
for four hours, so you won't have to enter a password anymore for the next four hours.
So a little bit of patience is required here.