The data we hold on computer networks is vital to the operation of our business. Indeed, most businesses today would be unable to survive a total data loss. To protect our digital assets we institute procedures to regularly back up our data and perhaps store copies in a secure off-site facility. However, once we have connected our network to the Internet we have to deal with another threat; the unwanted intruder or hacker. Without adequate protection we risk both data theft and corruption. It is the role of a Firewall to provide that protection.

If you think "It won't happen to me" then think again. Within the first hour of connecting your network to the Internet automated port scanners will have probed your network for vulnerabilities several times. If someone does penetrate your network they may be content to simply leave an electronic calling card or they may have something more sinister in mind. If they work for a competitor, theft of data maybe the motive. If they bear a grudge or are inclined to electronic vandalism they may damage or delete your valuable data.

If you network is currently protected by a NAT Router and/or Proxy Server then you already recognise the need for boundary security. However, technology marches on and so do the skills of the hackers. These tools no longer provide the protection they once did and should be complemented or replaced with the latest Stateful Inspection Firewall technology.

The Data Protection Act stipulates that if you are carrying employee or other personal information on your network you have a duty to protect it from falling into the wrong hands. A professionally installed Firewall will protect your data and evidence to the Registrar that you have taken reasonable precautions at the network boundary.

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