GianPDev's Knowledge Base

    SSH Keys

    ssh-keygen -t rsa -b 4096
    Copy Public key to Remote host
    # on main computer ssh-copy-id to remote computer
ssh-copy-id USER@server.ip.here
# enter password

    Copying Public Key to Remote Host (windows 10, powershell)

    Get-Content -Path "$env:USERPROFILE/.ssh/id_rsa.pub" | ssh USER@server.ip.here "cat >> .ssh/authorized_keys"

    Give correct permissions to .ssh files:

    chmod 755 ~/.ssh
chmod 755 ~/.ssh/authorized_keys
chmod -R 755 ~/.ssh
#or 

chmod -R 700 ~/.ssh

    Revoke ssh key fingerprint:

    ssh-keygen -R server.ip.here

    with port

    ssh-keygen -R "[server.ip.here]:PORT"

    Convert linux ssh key from ssh2 to PEM and back

    WARNING: This will overwrite the key, but is easily converted back

    ssh-keygen -p -f id_rsa -m PEM

    ssh-keygen -p -f id_rsa -m SSH2