update: 2024 GNU Linux howto ssh sshd config hardening security guide 2017 version: # tested on uname -a Linux debian 3.16.0-4-686-pae #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) i686 GNU/Linux ssh -V OpenSSH_6.7p1 Debian-5+deb8u3, OpenSSL 1.0.1t 3 May 2016 vim /etc/ssh/sshd_config; # … Continue reading GNU Linux bash – config ssh to allow only login from specific users@specific-hosts – sshd AllowUsers – how to test / debug ssh settings / problems