Pen-test Freesshd 1.10

Hello all,

This is the first time sending to the list I would like to know some way
to pen-test a sftp server I have setup on our network. I have tried nmap
for open ports and I have tried metasploit for buffer overflows that I
found on Google. Are there any programs or tricks I should know to try
and break into this. I am basically proving the security of the
application for production use.
Thank you for any advise you can give me.

Steven

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