I am setting up shiny server on Ubuntu. I already installed shiny and installed shiny server, and also activate the firewall and allow the connections in ufw for port, but I always meet trouble when shiny server is indeed listening on port 3838.
When I try to input the below command to listen to the port 3838:
Therefore, when I point my browser to http://shinyserver01.uni.au.dk:3838/ to try to bring up the default shiny server welcome page, it always give me the error “the site can not be reached”. I tried many solutions, but neither is working. So may I ask for a favor from you to suggest any idea about this?
I am using a remote server, which is a virtual server belongs to our university network center. I am able to login this server with my username by using Putty.
This seems like a networking issue, I suggest you contact your IT department so they can make sure the port is actually open. Depending on the cloud computing service provider, this might have to be done at the administrator level and not at the instance level.
When I input the command:
nmap 10.83.20.14 -p 80
and can see the output is that 80/tcp closed http,
the similar for 8080: 8080/tcp closed http-proxy
But when I see the status of ports: sudo ufw status
the output is
Status: active
Even if you have 3838 port open on the virtual server, it might have to be open for your instance on the physical server hosting your virtual machine, that is why I advice you to contact your IT department.