depaul university
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April 25, 2000 John Kristoff 1
DePaul University
A Network Case StudyJohn Kristoff <jtk@depaul.edu>http://condor.depaul.edu/~jkristof/
April 25, 2000 John Kristoff 2
Organizational Structure
April 25, 2000 John Kristoff 3
Another View
April 25, 2000 John Kristoff 4
Network OverviewSpring 1999
April 25, 2000 John Kristoff 5
Network OverviewSpring 2000
April 25, 2000 John Kristoff 6
Gigabit WAN
April 25, 2000 John Kristoff 7
Lincoln Park Infrastructure
Expansion and RenovationNetwork Connectivity CostsNetwork Connectivity Options
Approximately 30 buildings to connect!
April 25, 2000 John Kristoff 8
Network SecuritySpring 1999
DNS server compromised - GAME OVER!
Lack of awareness/expertiseNo computer security person/teamSecurity incidents were never
reported by an I.S. staff member
April 25, 2000 John Kristoff 9
Network SecurityFirst Steps
Compromised systems rebuiltRouters/Switches securedRouter filters appliedNetwork equipment logging enabledScare tactics used
April 25, 2000 John Kristoff 10
Computer SecurityToday
Incident response team formedDirective from VPUse of encryption increasingStaff participating in training and
industry eventsRegular network security auditsAwareness is built!
April 25, 2000 John Kristoff 11
Computer SecurityTomorrow
Sophisticated intrusion detection system
Firewalls in front of key resourcesMembership into FIRST.orgMore encryptionRevised and updated policiesMore secure systems and network!
April 25, 2000 John Kristoff 12
Bandwidth Management
Internet bandwidth is our last mileDifficult to provide fairnessResNet
many shared LANs many users suffer!
Throw bandwidth at the problem?No silver bullet today
April 25, 2000 John Kristoff 13
Some of My Favorite Network Tools
MRTGNetflow datasyslogNTPnmappacket capture (Sniffer, tcpdump, etc.)documentation!
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