By nevessmichel
I have a python app running at port 9000 and want to connect externally. So, I open port 9000 in ufw, checked wheather port app is listen and created rule at Digital Ocean firewall. I can connect to postgres at port 5432 and ssh, but cannot connect to port 9000.
sudo netstat -plnt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 692/systemd-resolve
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 877/sshd
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN 937/postgres
tcp 0 0 0.0.0.0:9000 0.0.0.0:* LISTEN 1184/python3.6
tcp6 0 0 :::22 :::* LISTEN 877/sshd
tcp6 0 0 :::5432 :::* LISTEN 937/postgres
sudo ufw status
Status: active
To Action From
-- ------ ----
9000/tcp ALLOW Anywhere
9001/tcp ALLOW Anywhere
10001/tcp ALLOW Anywhere
10000/tcp ALLOW Anywhere
5432/tcp ALLOW Anywhere
22/tcp ALLOW Anywhere
22 ALLOW Anywhere
9000/tcp (v6) ALLOW Anywhere (v6)
9001/tcp (v6) ALLOW Anywhere (v6)
10001/tcp (v6) ALLOW Anywhere (v6)
10000/tcp (v6) ALLOW Anywhere (v6)
5432/tcp (v6) ALLOW Anywhere (v6)
22/tcp (v6) ALLOW Anywhere (v6)
22 (v6) ALLOW Anywhere (v6)
Can someone help me, please?
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Hi there @nevessmichel,
This actually looks all correct, so I think that it might be your local network closing the connections to that custom port. In order to do that you could run the following command from your computer:
- telnet portquiz.net 9000
If you are not able to connect then this would indicate that port 9000 is closed on your local network.
Let me know how it goes! Regards, Bobby
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