Christoph Schuba

	    COAST Laboratory - Computer Science Department
			  Purdue University
		    West Lafayette, IN 47907-1398


	      A Case Study in Computer Network Security

Data communications networks have become an infrastructure resource
for businesses, corporations, government agencies, and academic
institutions. However, new technologies introduce new threats, and
networking not only puts corporate resources, plans and data at risk,
but ultimately a company's reputation and potential survival.

In this talk we will describe an attack on computer systems connected
to the Internet that made headlines in the Wall Street Journal
recently. We will investigate protection mechanisms against the attack
and discuss its implications. Goal of this case study is to
demonstrate why attacking computers is simple, and why providing
security is difficult but worthwhile.