Nice ! Don’t forget the RSA Fingerprint

Thank’s, it’s perfect and secure (without login/passwd).

If you have this issue :
[nagios@supervision plugins]# ./check_sftp -p 22 -H 192.168.0.1
WARNING: Host key verification failed – unable to authenticate server

Solve it by add the RSA Fingerprint :
[nagios@supervision plugins]# sftp [email protected]
Connecting to 192.168.90.126…
The authenticity of host ‘192.168.90.126 (192.168.90.126)’ can’t be established.
RSA key fingerprint is xx:xx:xx:xx:xx:x:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘192.168.0.1’ (RSA) to the list of known hosts.