Table of Contents
Overview of security threats Fundamentals of network security / Part I
Outline of the lecture
PPT Slide
Internet Security - Hype
How much security?
The threats
Crime/loss breakdown
The attacker
How to gain unauthorized access
Network access
What can go wrong?
Basic internet protocols
ICMP
UDP and TCP
UDP communication
TCP three-way handshake
TCP three-way handshake
Types of attack
Breakdown by type of attack
Password attacks (1)
Password attacks (2)
Password attacks (3)
Password attacks (4)
Denial of service (DoS)
Spoofing
Spoofed ping floods
Smurf attack
Smurf attack
Distributed DoS
PPT Slide
SYN flood
Spoofing trusted hosts
Spoofing trusted hosts
Spoofing trusted hosts
System break-in
Break-in consequences
Ways to gain unauthorised access
Some common examples
Buffer overruns
PPT Slide
PPT Slide
Malicious code
Trojan horses
Mail relaying
Common scenario of the attack
Script-kiddie attack
Professional attack
securityfocus.com
PPT Slide
Scanning
Example
Find exploits
Rootkit
Sniffer
Find a weaker element
References
Useful tools
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