Master node connection to worker (remote) fails

Application
1

I am connected through VPN to master node for remote command but Now I am receiving this error.
Please help to connect again
channel4: open failed: connect fail: connection refused

2

Please can you describe the specific command/activity that triggered the error and where the error was visible.

3

I execute the command from my master node to connect a computer on same network.
ssh -N -f -L localhost:39000:localhost:39000 cryosparc@IP address of remote host
This asks for the password and when provided with the password it does not accept/

4

If you do not wish to post actual hostnames, we may avoid confusion by agreeing on fictitious hostnames to consistently refer to specific hosts, like

  • hostA refers to the master host
  • hostB refers to

Please can you provide the following details:

  1. Does user cryosparc exist on hostB?
  2. What is the intended purpose of forwarding hostA’s port 39000, which presumably is in use by CryoSPARC, to hostB?
  3. What was the precise error message related to ?