~/.ssh/config

man

Host your_machine_name
    Hostname IP_or_dns_name
    User USERNAME_TO_CONNECT
    IdentityFile ~/.ssh/id_ed25519

Host *
    User yourdefaultuser
    StrictHostKeyChecking no

mkdir ~/.ssh/
touch ~/.ssh/config 

ServerAliveInterval
ClientAliveInterval

RemoteCommand
RequestTTY
UseKeychain
ForwardAgent
ProxyJump

LocalForward
LocalCommand

SendEnv

Related

• /etc/ssh/ssh_config
• Terraform: AWS instance example with aws ami lookup and key name
• Bad owner or permissions on
• chmod
• sudo su -

See also

• /etc/ssh/ssh_config, ~/.ssh/config (man), RemoteCommand, RequestTTY, ServerAliveInterval, UseKeychain, ForwardAgent, ProxyJump, ControlMaster, ControlPath, ControlPersist
• 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