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The use of IPsec is pervasive throughout the networking industry. However, many organizations are using IPsec in sub-optimal configurations that result in weaker connection security. Many organizations use IPsec with pre-shared keys and weak encryption algorithms and no form of authentication. Organizations should reconsider how they are using IPsec to ensure it provides maximum security for their organization's private communications.

Virtual Private Networks or VPNs have become commonplace for millions of users across the world in both their personal lives and their workplaces. In essence they allow computers on separate local networks (LANs) in different locations to connect to each other across the public connections of the internet without anyone else being able to see or intercept the information that is travelling between them.

As more and more of us work on the move, from our homes or on personal devices that we bring into the office, it is becoming increasingly important to embrace the technologies behind the VPNs that allow us to 'remote on' to our office networks, giving us the freedom to take advantage of these flexible work practices. The following article provides a quick guide to how they actually work.