This process encrypts traffic exchanged between the server and the client. Because passwords and usernames can be brute-forced, it's recommended to use SSH keys.įor an SSH client and server to establish a connection, the SSH server sends the client a copy of its public key before allowing the client to log in. You can connect using a password or a private and public key pair. To initiate an SSH connection to a remote system, you need the Internet Protocol (IP) address or hostname of the remote server and a valid username. SSH uses port 22 by default, but you can change this to a different port. The sshd daemon, which runs on the remote server, accepts connections from clients on a TCP port. The OpenSSH suite contains tools such as sshd, scp, sftp, and others that encrypt all traffic between your local host and a remote server.
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