Question

port 443 blocked?

Port 443 is open in iptables:

iptables -L -v Chain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination … ACCEPT tcp – any any anywhere anywhere tcp dpt:https

But when I try to access the port by various means its rejected: telnet localhost 443 Trying 127.0.0.1… telnet: Unable to connect to remote host: Connection refused

Apache2 is running and has the 443 set up: <VirtualHost *:443> …

Is something blocking the port in front of my droplet?


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Solved it. The words “Connection refused” let me to believe it was actively being refused, but really it was just apache not listening to the port because of a misconfiguration. I had an apache site enabled for a virtual host on port 443 but it was not loading because the apache ssl module was not enabled ie. “a2enmod ssl”.

UFW is “inactive”. I copied the iptables rules from an old droplet where 443 is open and works. If I compare both tables side by side from the output of “iptables -L -v” both droplets show the same rules and https is ACCEPTED.

The reason Im asking if something is blocking in front of the droplet is that I have the same problem with port 25 but when i open port 26 and config the a mail client to use 26 instead it works - so it seems there is something in front of the droplet thats not completely open?

Hello, @comis

From what I can see the port is closed. What you can do is to make sure it’s open using the following commands:

Check if UFW is enabled:

sudo ufw status

If UFW is disabled, which it is by default, you’ll see something like this:

Status: inactive

To enable UFW, use this command:

sudo ufw enable

Open the port with this command:

sudo ufw allow https

or

sudo ufw allow 443

Check the status again:

sudo ufw status

You should see that the port is open and this should solve the issue for you. Hope it helps.

You can check this tutorial as well:

https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-ubuntu-18-04

Let me know how it goes.

Regards, Alex