I’ve been using NoMachine to connect to my AWS EC2 Ubuntu system for a while but recently I cannot do so.
Now the error is shown as:
“A connection timeout has occurred while trying to connect to ‘ec2-xx-xxx-xxx-xx.us-east-2.compute.amazonaws.com’ on port ‘4000’. The issue could either be caused by a networking problem, by a firewall or NAT blocking incoming traffic or by a wrong server address. Please verify your configuration and try again.”
Does anyone know where the potential issue is? from the NoMachine or AWS. I did not make any changes on both sides and the connection works fine a few weeks ago.