Here are the steps how to add an SSH key for authentication on a linux machine.

SSH keypairs are combination of a public key that you can share on your remote machines and a private key that you should store securely and use for accessing the remote machines. They add both better security than passwords and less effort to remember different password for each server you log on.

This article can help you on generating SSH keypair for authentication to your remote machines. The benefits of using SSH keys are the added security in compare with password authentication and the ease that you can you the same keypair to connect to multiple sites and remote machines, by just sharing you public key and keeping your private key secure.

OpenSSH server comes with a pretty neat builtin SFTP subsystem. It allows you to use SFTP out of the box but it also provides some more advanced features. One commonly used feature is restrict an SFTP user to access only one directory and not see the entire server filesystem, or also known as chrooting (from changing the root of the filesystem tree).

SSHFS allows you to mount a remote filesystem over a simple SFTP connection. It is quite useful as most SSH servers support it out of the box, so you don’t really need any server-side configuration. All you need is SFTP access to the remote location.

In the article below, you can find quick and easy explanation how to generate and setup ssh keys between two hosts.
SSH keys have two major benefits – added security and easier management of multiple hosts with one public key. Nowadays, it gets more and more popular with the eve of the Automation era – you know, keeping THE passwords in a file is not the best security.

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For years SSH has prooven to be extremly useful and flexible protocol.

The forwarding option in SSH is another example for its versatility. Using it you can easily forward a local TCP port to another on the remote machine. Read More