ssh-keyscan

ssh-keyscan man gather SSH public keys from servers.

ssh-keyscan 192.168.0.0/24

ssh-keyscan -H
-H hashes the hostname / IP addres

ssh-keyscan github.com >> ~/.ssh/known_hosts

• OpenSSH 9.1:
• OpenSSH 6.1: August 29, 2012 Finds ECDSA keys in ssh-keyscan and SSHFP DNS records by default now

Activities

• Read https://serverfault.com/a/316100

Related terms

• ssh-keygen

See also

• ssh-keyscan
• 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
• 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