Request for a Lockdown option

[Manon Goo]

> How is this different to configuring /etc/securetty and tunnelling
> Telnet over SSH Port Forwarding which I don't recommend BTW?

P.S:
The idea is about being able to Lockout a potential attacker very early in the protocol (before the key handshake happens) as a workaround until vulnerabilities can be properly fixed and not about Authenticating or Authorizing users for their regular login process.

Manon