501  ssh hostname
  503  ssh hostname
  504  ssh hostname
  505  ssh hostname -vvv
  506  ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 hostname
  507  ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 hostname -vvv
  508  ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 -c 3des-cbc  hostname -vvv
  509  ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 -c 3des-cbc  hostname -vv
  510  ssh -oKexAlgorithms=+diffie-hellman-group-exchange-sha1 hostname -vv
  511  ssh -oKexAlgorithms=+diffie-hellman-group-exchange-sha1 hostname
  512  ssh -vvv -oKexAlgorithms=+diffie-hellman-group-exchange-sha1 hostname
  516  ssh -oHostKeyAlgorithms=+ssh-rsa hostname
  517  ssh -vvv -oHostKeyAlgorithms=+ssh-rsa hostname
  518  ssh -vvv  -oKexAlgorithms=+diffie-hellman-group1-sha1 hostname
  519  ssh -vvv  -oKexAlgorithms=+diffie-hellman-group1-sha1 hostname
  520  ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 hostname -vvv
  525  history | grep hostname