/sbin/iptables -L /etc/hosts.allow /etc/hosts.deny. # apt-get install openssh-client openssh-server # ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key.pub 2048 44:c3:7c:1e:0c:f6:24:82:2f:b7:f8:83:93:1f:08:13 /etc/ssh/ssh_host_rsa_key.pub Protocol 2 Port 222 SilentDeny yes PasswordAuthentication no PermitRootLogin no RSAAuthentication yes AllowedAuthentications publickey RequiredAuthentications publickey MaxStartups 2 LoginGraceTime 30 IdleTimeout 15m Ciphers anycipher Ciphers anystdcipher ForwardAgent no Forward X11 no # What to do when CTRL-ALT-DEL is pressed. #ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now ca:12345:ctrlaltdel:/usr/bin/logger -s -p auth.notice -t [INIT] "CTRL+ALT+DEL caught but ignored! This is not a Windows(r) machine." This manual is free software; you may redistribute it and/or modify it under the terms of the GNU General Public License (http://www.debian.org/releases/stable/amd64/apf.html.en)