ROS Remote Network Setting with Port Forwarding Problem

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As title, I was using ROS for about 5 months, currently I have to move the simulation part to another Virtual Machine which was built on a cloud server and the port is forwarding from local_IP:11311 to global_IP:50230, here I face the problem for the network setting.

Computers' setting are as below:Q

• Computer 1 as a data saving computer :

  • Local wifi network ip = 192.168.0.80

  • Port 22 Forwarding to = Lab_IP:29

  • ROS_MASTER_URI = http://Cloud_IP:50230

  • ROS_HOSTNAME = 192.168.0.80 / Lab_IP ( I've tried both configuration but in vain )

  • ROS_IP = 192.168.0.80 / Lab_IP

• Computer 2 as ROS MASTER:

  • Local network ip = 192.168.101.83

  • Port 11311 Forwarding to = Cloud_IP:50230

  • ROS_MASTER_URI = http://192.168.101.83:11311

  • ROS_HOSTNAME = 192.168.101.83

  • ROS_IP = 192.168.101.83

The problem I'm facing now is that I can do rostopic list but when I echo those rostopic, it shows

WARNING: no messages received and simulated time is active. Is /clock being published?

Is there anything that I misunderstood at the tutorial ?

Any suggestions will be appreciated, thanks !