Question

How to open PORT : 443

I have checked that the port 443 is closed and is not listed on my droplet.

Here is the output when i run the command :

root@ubuntu-1gb-blr1-01:/# netstat -ntlp | grep LISTEN tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 4749/mysqld tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1626/sshd tcp6 0 0 :::80 :::* LISTEN 17100/apache2 tcp6 0 0 :::22 :::* LISTEN 1626/sshd

Please let me know how can I open 443 port So that my website works over https.

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Flamber Hansen • April 5, 2017
Accepted Answer

Let’s list the services that are running:

sudo lsof -iTCP -sTCP:LISTEN -P

Do you see Apache on port 443 on the list? If yes, then it might be a firewall issue. If no, then Apache isn’t listening on port 443, which probably is a wrongly configured VirtualHost, so let’s see the configuration for your sites.

Vijay Maurya • April 5, 2017

Please let me know which Linux flavor, you are using.

In general you can use below command to open port 443 on any linux.

iptables -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT

service iptables save

service iptables restart

Hope it will help you.

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Bobby Iliev
Site Moderator
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• June 16, 2021

Hello,

In addition to what has already been mentioned, not that you would need to have an SSL certificate installed in order for Apache to also listen on port 443.

You could use Let’s Encrypt to get a free SSL certificate and certbot will also do the Vhost configuration for you automatically:

https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-20-04

Regards, Bobby