I have opened the relevant port from firewall. I have setup the firewall config as in the image provided.
I have also opened port on the server with following command
sudo ufw allow 60000:61000/udp which is the relevant port used by mosh.
I have installed mosh on the server also and It connects through. Following the snapshot
mosh firstname.lastname@example.org still gives unable to receive any data on port 60001.
I dug deeper and found out that that opening all the ports on the firewall lets me connect to the google VM but config attached in the image should have been enough.
Am I missing something here?