Frequently Asked Questions

What is a firewall?

A firewall is software designed to shield your computer from unauthorised access and block unwanted internet activity. If you’re using your home computer to access the internet, you should use a firewall. If you use any other PC (for example, at work) check that your employer is maintaining a firewall.    
We recommend that your firewall is set up to work on incoming and outgoing internet communications, so that you control not only what you allow into your computer, but also have control over what leaves it.
For more information and advice on different aspects to stay safe online visit (opens in a new window).


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