Broadband Guide

Protect your wireless broadband network

Updated: Monday 14 May, 2012

By Anthony Hill

Wireless broadband allows you to surf the web from anywhere in your home without having to run cables around the house, as well as letting whole family go online at the same time - with all their varied mobile technology...

But before you start checking your emails from the garden shed, you need to ensure your connection is secure.

Wireless network security

When you set-up a wireless network in your home, the broadband signal is sent out from your router - it’s no longer necessary to physically connect your computer to your modem using an Ethernet cable - and your network is no longer contained by the walls of your house.

While this is great for giving you tons of extra flexibility, it creates a whole new set of security challenges. Protecting your wireless network is essential if you want to keep your connection private and free from hackers or freeloaders.

How do I check if my wireless network has security?

Go to My Network Places and scan for your wireless network. In the list that appears, there should be a picture of a padlock next to the name of your network. If there is no padlock, then your network is open and you need security.

An open network means that anyone within range of the signal - which usually travels around 100 metres - can connect to the internet using your broadband connection. This could result in piggybacking users slowing your connection down and using up your download allowance.

But what's even worse is an open wireless network leaves you vulnerable to hackers, who can easily gain access to your files or personal data.

How do I secure my wireless network?

You need a wireless encryption key. This is a series of numbers and letters, working like a password to turn data into a code before it’s sent, making hacking more difficult. The most commonly used methods are:

• WEP with 64bit or 128bit encryption strength - a simple encryption that offers limited security and is relatively easy to break
• WPA-PSK (WPA-Personal) - in the forms of WPA-TKIP which offers better security and is backwards compatible with older routers and USB keys, and WPA2-AES which offers the best security and performance but less compatibility

Use our free Wireless Key Generator to create unique, hard-to-crack passwords to keep your wireless network secure.

Is there anything else I can do?

As well as having an encryption key, there are a few other steps you can take to protect your wireless network:

• Firewall - either built into your router or as software on your PC, this will help to protect you from hackers
• Anti-virus software - such as Norton or McAfee, to protect you from computer viruses
• Anti-spyware software - to prevent spyware from collecting personal information about you

You should also regularly run live updates on Windows and your anti-virus to ensure that your security is always up-to-date.

What is wireless isolation?

Wireless isolation allows you to make your PC invisible on your network by hiding the name of your signal service set identifier (SSID) to prevent other users from being able to access information on your computer, even if they have hacked into your network. Wireless isolation is built in to some routers but must be enabled by the user - check your router instructions for details.

What is an access list?

Access lists are basically an extra level of security on your network. As well as needing the password for your network, users would also have to be on the access list. Your router’s instructions will explain how to isolate and filter a MAC address, which is what you need to create an access list.

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