Pela rede local entra normal, pela internet ele conecta pede login e senha mais n aceita a senha e depois de 3 tentativas ele fecha.
Minha conf no kurumin
Port 22
Protocol 2
#ListenAddress 0.0.0.0
#ListenAddress ::
ServerKeyBits 768
LoginGraceTime 600
KeyRegenerationInterval 3600
PermitRootLogin no
IgnoreRhosts yes
#IgnoreUserKnownHosts yes
StrictModes yes
X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog no
KeepAlive yes
SyslogFacility AUTH
LogLevel INFO
HostbasedAuthentication no
RSAAuthentication yes
ChallengeResponseAuthentication yes
PasswordAuthentication yes
PermitEmptyPasswords no
# Uncomment to enable PAM keyboard-interactive authentication
# Warning: enabling this may bypass the setting of 'PasswordAuthentication'
#PAMAuthenticationViaKbdInt yes
#MaxStartups 10:30:60
#Banner /etc/issue.net
#ReverseMappingCheck yes
# Ativa o sftp:
Subsystem sftp /usr/lib/sftp-server
UsePAM yes
AllowUsers teste