The page is served on port 8080. It works locally (http://localhost:8080). (Also tried port 80, no avail.)
I have already disabled the firewall.
I have already configured the inbound rule of the security group in Azure, this way:
Error is:
$ telnet 13.76.139.111 8080
Trying 13.76.139.111...
telnet: Unable to connect to remote host: Connection timed out
Best Answer
As answered here, make sure to set the source port range as
*
. Clients use a source port number allocated from a pool of ephemeral ports.(Also explained in a comment from Ralph Squillace replying feedback over an article about how to do it in a classic VM.)