Understanding OpenSSH
The SSH component can be categorized into two parts. The first is OpenSSH server (sshd service) which is installed and run on a remote server to accept connections from OpenSSH Client. By default, it runs on port 22 using TCP protocol, which should be allowed by firewalls to accept OpenSSH client connections.
The second component is SSH Client, which should be installed on any client system (Linux, Windows, or macOS) from which you want to connect to the system running OpenSSH server for remote administration.
Thus, the SSH protocol facilitates secure communications between two systems using client-server architecture. SSH encrypts the user login session completely and thereby makes it difficult for intruders to sniff ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access