The Service is working on the server.
The server starts a service on port 9001. It's working on the localhost. Service can be visited through the browser.
The firewall is disabled.
$sudo iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
$ sudo ufw status
Status: inactive
$ service iptables status
Unit iptables.service could not be found.
The network is working.
Other machine can get ping result. But telnet would fail withconnection refused. And other machince also disabled their firewall.
The server it's using unbuntu 18.04 x86_64.
What could be done to fix this situation?
