why doesn't any ports actually open except for 80,22, 53 and 443?

October 3, 2019 147 views
DigitalOcean Cloud Firewalls

i have created a firewall and i want the below opened and it doesnt work?

Furthermore the ticket support is not helpful either?

PORT E SERVICE
143/tcp imap
587/tcp submission
993/tcp imaps
995/tcp pop3s
3306/tcp mysql
4190/tcp sieve
4949/tcp munin
25/tcp smtp

How can i open the above ports?

deleting the firewall does nothing either

2 Answers

Do you have any services running on those ports on your droplet?

To check that use the netstat -plant command.

  • I have been trying to set up an email server using mailinabox with a guide by digital ocean and its advised that those ports need to be open to work the mail. the status check also points to a firewall causing it not to work?

    • Are you using a cloud firewall or just a firewall on your droplet? Can you share your firewall rules?

      • just a firewall on the droplet - via mailinabox

        22/tcp ALLOW Anywhere
        53 ALLOW Anywhere
        25/tcp ALLOW Anywhere
        587/tcp ALLOW Anywhere
        993/tcp ALLOW Anywhere
        995/tcp ALLOW Anywhere
        4190/tcp ALLOW Anywhere
        80/tcp ALLOW Anywhere
        443/tcp ALLOW Anywhere
        993 ALLOW Anywhere
        22/tcp (v6) ALLOW Anywhere (v6)
        53 (v6) ALLOW Anywhere (v6)
        25/tcp (v6) ALLOW Anywhere (v6)
        587/tcp (v6) ALLOW Anywhere (v6)
        993/tcp (v6) ALLOW Anywhere (v6)
        995/tcp (v6) ALLOW Anywhere (v6)
        4190/tcp (v6) ALLOW Anywhere (v6)
        80/tcp (v6) ALLOW Anywhere (v6)
        443/tcp (v6) ALLOW Anywhere (v6)
        993 (v6) ALLOW Anywhere (v6)

        mailinabox claims an external firewall is filtering the box - which must be digtial ocean..

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