Пример простого конфига демона SSH.
Авторизация разрешена только по ключам.
Port 22
Protocol 2
SyslogFacility AUTHPRIV
LoginGraceTime 2m
PermitRootLogin without-password
StrictModes yes
MaxAuthTries 3
MaxSessions 10
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile
.ssh/authorized_keys
PasswordAuthentication no
PermitEmptyPasswords no
ChallengeResponseAuthentication no
UsePAM no
PrintMotd no
PrintLastLog no
UseDNS no
Subsystem
sftp
/usr/lib/misc/sftp-server
AllowUsers root