Virtual Private Networks

If you want to give off-site workers or remote offices access to your network, you can use your broadband connection to set up a Virtual Private Network (VPN). This is an extremely secure system of transferring data because it uses the most powerful encryption technology available. It is also a comparatively cheap way of securing data, because you don't need to hire a system of private leased lines - data is sent over the Internet instead.

Potential applications:Effectively, a VPN uses the Internet to extend your company network globally. In other words, with the correct security clearance, you can use a VPN to access your company network from any Internet-connected computer. This opens a huge range of possibilities, as:sales people can access real-time data on stocks and prices,homeworkers can receive email and work on the most up-to-date documents,people working away from the office, like engineers or delivery people, can provide real-time information - like progress reports on work or immediate confirmation of delivery,businesses with several offices can network sites more cheaply than by leasing dedicated connections

VPN cost implications:There may be the potential to save on some of the cost compared with remote modem access. Most VPN options require a broadband connection and have installation and annual charges.

Outsourcing VPNs:Increasingly, VPN applications can be outsourced to a commercial service provider who specialises in managed security services. In such outsourced VPNs, the service provider is responsible for VPN configuration (provisioning) and monitoring. Service providers may locate their VPN devices at customer premises, or at their own sites