CSCD 434Network Security

Spring 2014

Lecture 1 Course Overview

Contact Information

• InstructorCarol Taylor315 CEB Phone: 509-359-6908E-mail: ctaylor4214@comcast.net

Office hours: M, W, F 1 – 2 pm

• Course TimeMon, Wed 2 – 4:30 pmRoom: CEB 227 Lecture and CEB 342 Lab

Course Information

• Course number: CSCD 434 Network Security

• Course Web Pagehttp://penguin.ewu.edu/cscd434

Overview

• Today’s Topics• What is network security and how

does it fit within EWU curriculum?• Network Security fits within the

broader topic of general security• Some expectations• Learning Objectives for this course• Pre-test of network security

Network Security Defined

• Network Security – How would you define it?– Protection of networks and their services

from unauthorized modification, destruction, or disclosure– Study of both attack and defense

techniques that affect the network

Our Curriculum

• CSCD 330 – Network programming– Basic networking course with an emphasis

on programming

• CSCD 433/533 – Advanced Networking–More depth, cover network principles,

design – Cover other protocols, real-time, QOS– Some programming

Our Curriculum

• CSCD 434 Network Security– Computer networks focus of both threats and

defense. – Begin with coverage of Attacks and

Attackers• What they typically do to gain access to

computers on a network• Examine different phases of an attack• Learn tools and techniques attackers use– Try some out in the lab

• Try to answer, Why attack?

Our Curriculum

• CSCD434 continued …– Talk about Defense Mechanisms against

attackers• Detection/Prevention – Network security

policies• Authentication, users and machines• Firewalls and Intrusion Detection• Use of Cryptography as network defense–Whats its real value?–Where it works and where it doesn’t

work

General Computer Security

• How do you define computer security?– Application of hardware, firmware and

software security• To a computer system in order to

protect against, or prevent,• Unauthorized disclosure,• Manipulation, and deletion of

information or• Denial of service

General Computer Security• Where does network security fit within a

security curriculum?– Introductory Security class, CSCD303• Basics of computer security, code and

hardware vulnerabilities, OS protection mechanisms, cryptography based protection, authentication

– Cryptography• Algorithms and math that define

cryptography

General Computer Security• CSCD496 - Computer or Digital Forensics

• Capture data related to proof of electronic crimes• Recoverability of data from both host and

network

• CSCD437 - Secure Coding taught by Tom Capul

• Learn how to avoid software vulnerabilities • Attacks that can take advantage of code

vulnerabilities and how to create more secure programs

Network and General Security

Overlap of Topics

General SecurityNetwork

Security

Cryptography

Forensics

Secure Coding

Pre-requisite Knowledge

• Pre-requisites – Network course • Should know basic TCP/IP networks

– Knowledge of programming such as C, C++, C# or Java, Python or Pearl

• We will review some networking concepts– Point you to some supplemental

material on TCP/IP Networks to fill in the gaps

Student Learning Objectives

• By end of this course you should– Understand threats to computer

systems through network– Understand and be able to set up

defense mechanisms used to counteract threats– Understand role of cryptography in

network defense– Know how to continue learning about

network security beyond this class• Certifications, Journals, Web Sites

Expectations for You• Come to Class– Listen, learn and ask lots of questions

• Download lecture notes • Do reading if assigned – There will be outside reading!!!!

• Want in-class participation • There will be group exercises in class• Labs

Expectations for You

• Produce a project • Programming or experiment• Short write up of results• Presentation of your resultsOr

• Create a research paper• Survey paper• And do a presentation of a topic

Project or Program

• This will be a substantial part of your grade

• And, you can become a group too– Groups need to outline who is doing

which job–Work should reflect greater effort from a

group

Conclusion• Interesting class, increase everyone’s

knowledge of network security• Topic is challenging

• Broad and changes constantly• Nothing really difficult, but is a large topic

• Naturally interdisciplinary – Extends beyond the technical• Social and people-related issues • Policy and laws• We will cover some of this

The End

• This week no Lab• Next Time– General Security Overview