Secure Shell, as the name tells, is the open source and most secure and hence, most used protocol that is used to execute command remotely on a Linux host or to transfer files from one Linux host to another within a network using Secure Copy (SCP). Find more details about Secure Shell in our article- Secure Shell in Linux.
In this article, we will see how to setup password-less login between two Linux system to transfer files between them with the same level of security and trust.
Full article here:
How To : Secure Shell (SSH) Password-less Login using SSH-Keygen (Your Own Linux..!)