Logoff on wrong user name

[trudy1]

Hi!

I wonder if there is a way that a user immediately gets disconnected whenever he enters a wrong username. (So that he isn`t asked for a password).

Especially I want this behavior when connecting with ssh.

Is there maybe a pam mod for this?

Greetings,

trudy1

[unspawn]

I wonder if there is a way that a user immediately gets disconnected whenever he enters a wrong username. (So that he isn`t asked for a password). Especially I want this behavior when connecting with ssh.

With pam_listfile you can create a list of allowed accounts. But doing that will benefit only brute-forcers because they get immediate response if the account doesn't exist. I suggest you use fail2ban or equivalent instead.