On future connections, the client will reference this verified public key to ensure that you are still connecting to the same server by referencing the known_hosts file.īoth the client and the server negotiate a session key which is used to encrypt and decrypt the data sent during the SSH connection.įinally, the server authenticates the client using an SSH key (if available and used). Get started with a free trial download of Tectia SSH Client/Server (no credit card required): Tectia SSH free trial. The first time you connect to the server, you will be asked to verify the public key of the server. SSH (Secure Shell) is a multi-purpose protocol for secure system administration and file transfers, invented by SSH.COM founder, Tatu Ylnen. The SSH process uses symmetric encryption, asymmetric encryption and hashing in order to securely connect the client to the remote server. SSH utilizes TCP port 22 by default, although this can be changed to a non-standard port. In this article, we'll outline how to SSH to a server using the Terminal program on OS X Mac.
Mac OS features a built-in SSH client called Terminal which allows you to quickly and easily connect to a server. SSH or Secure SHell is an encrypted connection protocol which is used to connect to the command line interface of a remote machine.
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