What is a firewall?
A firewall protects your computer from attacks from unauthorised users either internally (from your organisation’s own users) or via the internet. It is also used to stop users accessing certain websites.
How does it work in practice?
The firewall is able to do this by inspecting information (sent and received) as it leaves and enters the network. If it spots any suspicious activity it will alert either the user or the IT department and will also put any suspicious files into quarantine ready for inspection.
Why is it called a firewall?
The term is borrowed from ship building. When ships were designed and built, they were sectioned or partitioned so that in the event of a fire, the partitions would prevent the fire from spreading.
Do I need a firewall?
In a word, yes! Without one, you are leaving your PC or network wide open to people who may wish to steal data or damage your PC.
Why do I need a firewall?
A firewall is all part of having a viable security policy in place regardless of whether you are a home user or large organisation with many users.
Not having a firewall is akin to leaving your car doors open allowing all and sundry to steal confidential files that you conveniently left on your seat!
Which is better, a hardware or software firewall?
Most PCs come with a pre-installed software firewall that can be configured to your individual needs. Generally speaking, for home or small business use this is sufficient, practical and easy to set up. Software firewalls will only protect the PC that they are installed on and not the entire network.
A hardware firewall is a dedicated piece of technology designed to sit in between your PC or network and the internet. Hardware firewalls have the advantage of being able to protect a network.
That said, both have their merits and many people advocate the use of both as added protection. It is best to seek the advice of a potential supplier(s) as the best setup will depend on you and your organisations’ needs.
Is it something that I can install myself?
It can be as many people do so at home. However, in an office environment it is wise to get advice and guidance from your chosen supplier because setting up correct policies is absolutely critical to ensuring that your network is protected effectively.
How do I find the right vendors and partners?
Conjungo is a great starting point because it will let you search for a supplier according to your location, company type, size and whether they have the right accreditations. Furthermore, Conjungo is completely unbiased, lists most of the major vendors’ resellers, and it’s free to use.