Outline script should open less ports
When I installed outline on a server with the current cloud-init script I got an error saying "Please review them [(your open ports)] and make sure to allow incoming TCP connections on ports ranging from 1024 to 65535."
When I applied this rule to my VPS it was fixed:
iptables -A INPUT -p tcp --source-port 1024:65535 -j ACCEPT
iptables -A INPUT -p tcp --dport 1024:65535 -j ACCEPT
I'm very new to iptables, though, so I'm not sure if i did it right
It might be possible to tell Outline to use less ports? Because Mart also pointed out that this is quite a big port range...