SFTP配置

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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

 

Step 3 : Edit /etc/ssh/sshd_config file and make changes as below. Find and comment below line.

 

#Subsystem sftp /usr/lib/openssh/sftp-server

and add these lines to the end of the file.

 

Subsystem sftp internal-sftp

Match group ftpaccess

ChrootDirectory %h

X11Forwarding no

AllowTcpForwarding no

ForceCommand internal-sftp

 

Step 4 : Restart sshd service.

 

sudo service ssh restart

 

Step 5 : Add user with ftpaccess group and create password.

 

sudo adduser paul --ingroup ftpaccess --shell /usr/sbin/nologin

 

Step 6 : Modify home directory permission.

 

sudo chown root:root /home/paul

 

Step 7 : Create a directory inside home for upload and modify permission with group.

 

sudo mkdir /home/paul/www

 

sudo chown paul:ftpaccess /home/paul/www

 

 refer: https://askubuntu.com/questions/420652/how-to-setup-a-restricted-sftp-server-on-ubuntu/607898