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(TLS). These features allow an Ethernet switch to handle HyperText Transfer Protocol Secure
(HTTPS), the highest level of Web access security available.
Other security strategies available to Ethernet equipment include port security, remote Telnet access
security, password protection and remote unit cut-off protection. Appendix B offers a brief primer on
the components of some of the most well-known security standards.
BEYOND THE SWITCH
Broader system security policies, physical and functional models, risk analysis, asset management and
critical aspects of running and maintaining a security program are addressed in detail by bodies such
as SP99 and PCSRF. The open approach of inviting industry wide input and comment will greatly
improve security at all levels . . . national, business and personal.
Thanks to the forerunners in the commercial environment, there is a strong base from which industrial
users can begin the work of adapting and customizing current security standards and protocols to
support industrial applications. But, as they begin to reap the benefits of remote access, care must be
taken to avoid security breaches. Commerce has led the way with highly secure financial, medical,
and retail applications, however, the complexities of industrial security require careful thought and
planning – and in many cases, a different take on a security strategy.
User authentication for controlling access and encryption are not only desirable but essential for secure
industrial applications. Ethernet switches with web management can offer a powerful point of control.
Additionally, remote web management is desirable and feasible with currently available hardware and
software, including GUIs for simplicity and ease-of-use. However, complete end-to-end design for
security is necessary, and it is incumbent on everyone to work toward highly secure network systems
that enable the industry to take advantage of the tremendous time- and cost-savings of web-based
networking.
A single white paper cannot possibly provide the specific guidelines that multiple prestigious industry
working committees are laboring to describe. At the same time, this white paper is intended to be
helpful by providing a basic understanding of the security levels that can currently be achieved at the
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