Does your target server require port knocking to enable SSH access? No problem.
You can try this handy
ssh_pkn connection plugin. It is based on Ansible stock
ssh plugin. It tries to make TCP connection to a given list of ports on the target host at the very beginning of connection creation process.
This will knock to
my.server.example.com:8888, then to
my.server.example.com:9999 just before first SSH connection is being made.
You can also set
knock_delay parameter – plugin will wait this number of seconds after each knock. Default delay is
ssh_pkn plugin here.
Drop it into
connection_plugins and you are good to go.