The number of pages within the document is: 266
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Matthew Strebe & Charles Perkins
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2019-02-18 18:44:13.208598
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Introduction Firewalls are among the newest developments in Internet technology. Developed from rudimentary security systems that major computer vendors like Compaq and IBM developed to secure their own networks in the mid eighties, these network sentinels have developed in lock-step with the burgeoning threat of information warfare. The most interesting and innovative developments, like Network Address Translation and multi-layer security filtering, are so new that books just two years old are already obsolete–as I expect this edition will be in two years’ time. The security problems of the past could be solved with simple packet filters and dial-back modem banks. The security problems of the future will require rifling through and validating every byte of an Internet message, requiring encrypted certification of a Web site’s true identity before connecting, and then encrypting nearly everything that travels between. Fortunately, as technology and the technological society it mirrors progress, these measures will become simple and invisible. As vendors make operating systems more hardened against attack, the World Wide Web will secretly grow more secure for people who will freely surf the Web as they please, hampered only by the occasionally warning that a site is not accredited or that a message contains suspicious content. This is as it should be. The security problems of today are most effectively solved with firewalls and virtual private tunnels. Peripheral security utilities like intrusion detectors and security scanners do their part to alarm and alert, but firewalls will remain the foundation of Internet security until their functionality is built into the very protocols upon which the Internet operates and until every Internet-connected computer contains the equivalent of a firewall. Even then, centralized management of Internet policy may make firewalls a permanent addition to corporate networking.
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