Port Blocking

This article will explain Port Blocking for iiNet broadband services.


What is Port Blocking?

Data moves around the internet through ports. When a port is blocked, data can't move through it. There are certain ports that aren't necessary for everyday interent use, but they are commonly used for network attacks.  Blocking these ports helps to protect our users from security threats.


Ports blocked by default

The following ports are blocked by default:

  • Port 25 (SMTP) incoming/outgoing (except to iiNet email servers - this means that the only outgoing email server (SMTP) you'll be able to use on your iiNet broadband connection is mail.iinet.net.au)
  • Port 80 (http) incoming
  • Port 135 (netBIOS) incoming
  • Port 139 (netBIOS) incoming
  • Port 443 (https) incoming
  • Port 445 (TCP/UDP) incoming


How to disable default port blocking

Some advanced users such as business customers or people running their own servers may need to disable the default port blocking so they can continue their day to day operations.

  1. Log in to Toolbox.
  2. Select My Products from the navigation bar and then select Broadband.
  3. If you have more than one broadband service, you may need to select its username from the drop-down menu in the upper right-hand corner of the page.
  4. Select Manage port blocking from the left-hand column.
  5. Set the toggle switch to OFF and then click Change settings to finish. Your changes may take up to 15 minutes to take effect.

If you don't see the options described above in your Toolbox, please call us on 13 22 58 and we'll be happy to help.