SSH
"Multiplex" SSH Connection
Host *
ControlPersist yes
ControlMaster auto
ControlPath ~/.ssh/connections/%C
In this case you must create the ~/.ssh/connections directory and set its permissions to 700 to ensure security.
mkdir -m 0700 ~/.ssh/connections
There can be negative effects when using
E.g., if you kill the main connection, all the multiplexed connections will be killed as well. Also, if the main connection is lost due to network issues, all the multiplexed connections will be affected. Still in case of password authentication this means you only need to enter the password once for the "initial main" connection.
ControlMaster but I personally prefer to "multiplex" SSH connections for the convenience it provides.
E.g., if you kill the main connection, all the multiplexed connections will be killed as well. Also, if the main connection is lost due to network issues, all the multiplexed connections will be affected. Still in case of password authentication this means you only need to enter the password once for the "initial main" connection.