Basic HTML version of Foils prepared April 7 1998

Foil 24 Comments on Denial of Service

From Basic Principles of Java and Internet Security CPS616 Web Technologies -- Spring 98. by Geoffrey C. Fox
Examples of accidental denial of service include:
  • Mistakes in included JavaScript which cause infinite loops which can only be addressed by rebooting computer
  • One of my friends had a bug in his email script which sent 50 copies of his message
  • Use of too many graphics in your web pages uses all available network resources!
  • In November of 1996, an HTML page containing 100 tables within a table caused client computers to crash!
Clearly such inconveniences are inevitable and can consequences can only be addressed by careful programming and robust operating systems which will reduce impact.
  • make certain all your key open files are "saved" before accessing unknown pages so that crashs do not destroy information!

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