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         Homework 5 Answer Sheet
                Security
     Due in class on February 28, 2007
 Applied Networks and Security (IT 263 801)
CSTC 202, Wednesdays, 5:45 p.m. to 9:00 p.m.
    January 3, 2007 to March 14, 2007
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Student Name:


Assigned Reading:
  SOHO Networking, Chapter 5

  RFC 1958, Architectural Principles of the Internet
  <http://www.ietf.org/rfc/rfc1958.txt>

Homework Questions:

1.  What are some defeneses against the packet flooding style denial of
    service (DoS) attacks?




2.  Briefly research what the "Kashpureff attack" was.  Describe in your
    own words what happened and why.




3.  What would you consider the most important parts of the global Internet
    infrastructure that need protecting and why?




4.  How would a network operator prevent address spoofing from occuring
    from within their network?



5.  According to Rob Thomas and the talk he gave, what is the primary
    motivating factor the miscreants have to do the bad things they do?