I like pam_shield, personally. https://github.com/jtniehof/pam_shield https://github.com/jtniehof/pam_shield Back in the day, disabling password auth but leav

I like pam_shield, personally. https://github.com/jtniehof/pam_shield https://github.com/jtniehof/pam_shield Back in the day, disabling password auth but leaving keyboard_interactive on would stop a lot of these things, but I don't think that's true any more.