In parallel, define a security architecture and migration strategy that provides security through browsers, Secure Sockets Layer and passwords in the short run, and gets you started on PKI by deploying technologies such as IP Security virtual private networks and the Secure Multi-purpose Internet Mail Extensions e-mail standard.

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On-the-move workers in the utilities, field services, and oil and gas industries can easily carry it from place to place and have easy access to not only the Internet but also their companies' virtual private network (VPN) while they are away from the office.

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And traffic between geographically separated company networks can be routed through a virtual private network (VPN) tunnel instead of being exposed to the open Internet.

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Instead, businesses will likely choose dedicated DSL lines for direct Internet access and to connect remote workers to corporate intranets by employing virtual private networking technology.

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