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Step 1 : Install OpenSSH package if not installed sudo apt-get install openssh-server
Step 2 : Create separate group for SFTP users. sudo addgroup ftpaccess
In Unix, how do I use SCP to securely transfer files between two computers? https://kb.iu.edu/d/agye
How do I set up SSH public-key authentication to connect to a remote system? https://kb.iu.edu/d/aews#putty
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