I have a VM in Japan on Oracle Cloud Infrastructure but I cannot seem to reach the target port on a resource.
I tried the following command and the port 22 seems to be open.
nc -zv [my public IP address] 22
The command give me…
Connection to [my public IP address] port 22 [tcp/ssh] succeeded!
But when I try 3128 which is the target port I want to reach, it times out. Hmm the routing may not be going well. I checked the port on the local machine and a process is listening and it is open at the OS level. nc -zv is a useful tool to check if ports are open.