SFTP stands for secure file transfer protocol . SFTP is a combination of both ssh( security) and ftp ( fast transfer process). Simple ftp( file transfer protocol ) server is best for file transfer and ssh (secure shell) server is best known for authentication . SFTP was made to make file transfer faster but connection should be encrypted .SFTP server usually runs over TCP port 22.
HOW TO CONFIGURE SFTP SERVER IN LINUX ?
FOLLOW THESE STEPS:
- First install ssh server package .
- In my system ssh package is already installed .
[root@localhost ~]# yum install openssh* -y Loaded plugins: rhnplugin, security Repository 'a' is missing name in configuration, using id This system is not registered with RHN. RHN support will be disabled. Setting up Install Process Package openssh-server-4.3p2-36.el5.i386 already installed and latest version Package openssh-4.3p2-36.el5.i386 already installed and latest version Package openssh-clients-4.3p2-36.el5.i386 already installed and latest version Package openssh-askpass-4.3p2-36.el5.i386 already installed and latest version Nothing to do
- Now install package of ftp server .
[root@localhost ~]# yum install vsftpd* Loaded plugins: rhnplugin, security Repository 'a' is missing name in configuration, using id This system is not registered with RHN. RHN support will be disabled. Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package vsftpd.i386 0:2.0.5-16.el5 set to be updated --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================== Package Arch Version Repository Size ============================================================================================================== Installing: vsftpd i386 2.0.5-16.el5 a 140 k Transaction Summary ============================================================================================================== Install 1 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 140 k Is this ok [y/N]: y
It will calculate file size and ask you whether you wanna install it or not . Type y and hit ENTER . Your package will be installed in a few seconds .
Downloading Packages: Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : vsftpd 1/1 Installed: vsftpd.i386 0:2.0.5-16.el5 Complete!
- Disable linux firewall and se linux settings
- To disable firewall settings = iptables -F
- To disable selinux settings = setenforce 0
[root@localhost ~]# iptables -F [root@localhost ~]# setenforce 0
- Start the ftp server service
[root@localhost ~]# service vsftpd restart Shutting down vsftpd: [FAILED] Starting vsftpd for vsftpd: [ OK ]
- Also start the ssh server service
[root@localhost ~]# service sshd restart Stopping sshd: [ OK ] Starting sshd: [ OK ]Check the ip address of server machine by below command
- ip a
Check ip address of server machine by using any one command
NOW COMES THE CLIENT ROLE
- To connect through sftp server
- Type sftp ipaddress of server machine
- Then it will ask give root password to connect .
- Once you give right password .
[root@localhost ~]# sftp 192.168.0.130 Connecting to 192.168.0.130... The authenticity of host '192.168.0.130 (192.168.0.130)' can't be established. RSA key fingerprint is ea:46:73:83:4a:60:77:34:20:26:ab:a7:21:96:f7:f7. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.0.130' (RSA) to the list of known hosts. firstname.lastname@example.org's password:
- When you see ” sftp> ” means you are connected to server machine through sftp server .
- Type dir (to check directories )
sftp> dir 3usageeks Deepit Desktop anaconda-ks.cfg install.log install.log.syslog rhel54iso.iso webmin-1.580-1.noarch.rpm
- To know which commands to run in sftp server Type ?
- Mainly get ( to download ) and put( to upload ) are used .
sftp> ? Available commands: cd path Change remote directory to 'path' lcd path Change local directory to 'path' chgrp grp path Change group of file 'path' to 'grp' chmod mode path Change permissions of file 'path' to 'mode' chown own path Change owner of file 'path' to 'own' help Display this help text get remote-path [local-path] Download file lls [ls-options [path]] Display local directory listing ln oldpath newpath Symlink remote file lmkdir path Create local directory lpwd Print local working directory ls [path] Display remote directory listing lumask umask Set local umask to 'umask' mkdir path Create remote directory progress Toggle display of progress meter put local-path [remote-path] Upload file pwd Display remote working directory exit Quit sftp quit Quit sftp rename oldpath newpath Rename remote file rmdir path Remove remote directory rm path Delete remote file symlink oldpath newpath Symlink remote file version Show SFTP version !command Execute 'command' in local shell ! Escape to local shell ? Synonym for help
- To logout type = bye or exit command
- Now to login with any other user .
- Type =sftp user@ipaddress of server machine
- Here deepit is my user and 192.168.0.130 is my ip ( server)
- Then It will ask you user password . Type password correctly and you are logged in .
[root@localhost ~]# sftp email@example.com Connecting to 192.168.0.130... firstname.lastname@example.org's password:
- To stop sftp type below command in server machine
[root@localhost ~]# service vsftpd stop
[root@localhost ~]# service sshd stop