Secure Shell (SSH)

Secure Shell (SSH) (1995) is a cryptographic network protocol for connecting to ssh network services providing encrypted communication and authentication. Most popular implementation is open source OpenSSH.

OpenSSH includes the following binaries:

• ssh, ssh client to connect using Secure Shell protocol
• scp, a replacement for obsoleted rcp
• sftp, a replacement for not encrypted ftp
• sshd, the SSH server daemon
• ssh-keygen, a tool to inspect and generate the RSA, DSA and Elliptic Curve keys that are used for user and host authentication
• ssh-agent
• ssh-add
• ssh-keyscan, to scan a list of hosts and collects their public keys
• ssh-copy-id, to copy local keys to remote machine.

Ssh clients:

• PuTTY
• ssh (OpenSSH)
• salt-ssh
• Paramiko
• pssh
• sshpass
• autossh
• tailscale set --ssh

Activities

• ~/.ssh/authorized keys

Related terms

• Wikibooks: OpenSSH
• ssh-import-id
• WinRM
• KexAlgorithms
• minikube ssh
• Activate OpenSSH on Windows
• Monitor and recording ssh sessions with Ekran
• Dropbear
• Teleport
• gcloud compute ssh, aws ec2-instance-connect
• Mutual authentication (mTLS)

See also

• SSH: ssh, TLS, .ppk, .pem, .crt, .pub, ED25519, Key exchange method (KEX), public key, private key, ssh -Q kex, IAMUserSSHKeys, known_hosts, ssh tunnel, Dropbear, ssh -o, ~/.ssh/config
• SSH clients: ssh (OpenSSH), putty, MobaXterm, plink, mosh, paramiko, conch pssh, sshpass and autossh, sftp, Termius
• OpenSSH (changelog): /etc/ssh/sshd_config | /etc/ssh/ssh_config | ~/.ssh/ | openSSL | sshd logs | sftp | scp | authorized_keys | ssh-keygen | ssh-keyscan | ssh-add | ssh-agent | ssh | Ssh -O stop | ssh-copy-id | CheckHostIP | UseKeychain, OpenSSF, ~/.ssh/authorized_keys
• tmux [ ls | a | new ], .tmux.conf, tlog, cockpit