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UBE 528
NETWORK SECURITY
2013-2014 SPRING


 

Catalog Data: Network Security, 3 hour lectures
Principles of Cryptography, Authentication and E-mail security

Instructor: PROF.DR.M.E.DALKILIC


Textbooks

·        W. Stallings, Cryptography and Network Security: Principles and Practice, 4th ed., Prentice-Hall, 2006

·        C. Kaufman, R. Perlman and M. Speciner, Network Security 2nd ed, Pren-Hall,2003

 

Referenences

·        Ross Anderson, Security Engineering: A Guide to Building Dependable Distributed Systems, 2nd. Ed,  Wiley, 2008


Goals: A survey of network security technology. Each of the basic building blocks of network security, including conventional and public-key cryptography, authentication, and digital signatures are covered. In addition methods for countering hackers and viruses are explored. The course covers important network security applications such as PGP, PEM, Kerberos, and X509, DSS security

Prerequisites: Fundamental Concepts in Computer Networks, Graduate standing

 

Topics:

 

·        Introduction

·        Hash functions

·        User/Web authentication

·        Symmetric Encryption

·        Attacks, Denial of Service

·        Spam, Antispam

·        Wi-fi, RFID, VoIP security

·        Intruders, viruses and worms

·        Public key cryptography

·        PKI and certificates

·        IP and WEB security

·        Firewalls

·        Anonimity networks

 



Grading (tentative):

  • Homeworks 20%
  • Midterm, 25%
  • Project, 20%
  • Final Exam, 35%

 

 

Useful material mostly from Keith Ross’s Network Security Course

Sample Midterm exam from year 2002 is here

Sample Final exam from year 2002 is here

Homework #1

(Due date: March 17th, 2014 for UTI502, March 20th, 2014 for UBI528)

1. Explain source routing and spoofing attack using source routing.

2. Explain (switch) port stealing and its use in a session hijacking attack.

Hint: A good source is the text: Counter Hack, 2nd ed., Ed Skoudis, 2005.

 

Homework #2

(Due date: March 24th, 2014 for UTI502, March 27th, 2014 for UBI528)

Homework 2 typed

 

Homework #3

(Due date: March 31st, 2014 for UTI502, April 3rd, 2014 for UBI528)

Do Wireshark Lab (SSL) Submit your written results. (trace file if you need it)

 

Homework #4

(Due date: April 7th, 2014 for UTI502, April 10th, 2014 for UBI528)

1.Briefly describe the HMAC algorithm. Also explain the steps done on the sender and receiver when HMAC used for message authentication.

2. Describe the Diffie-Hellman Public Key Exchange algorithm/protocol.

3. Explain, in a step by step fashion, the man in the middle attack against Diffie-Hellman Key Exchange Protocol.

4. a) Suppose Alice has a message that she is ready to send to anyone who asks. Thousands of people want to obtain Alice’s message, but each wants to be sure of the integrity of the message. In this context, do you think a MAC-based or a digital signature based integrity scheme is more suitable? Why?

b) Suppose Bob initiates a TCP connection to Trudy who is pretending to be Alice. During the Handshake, Trudy sends Bob Alice’s certificate. In what step of the SSL handshake algorithm will Bob discover that he is not communicating with Alice? Explain.

Homework #5

(Due date: April 14th, 2014 for UTI502, April 17th, 2014 for UBI528)

 

1.     What is the difference between a packet-filtering firewall and a proxy-server firewall? Can the two be used together?

 

2.     What are the four tables maintained by the Linux kernel for  processing incoming and outgoing packets?

 

3.     How does an iptables based firewall decide as to which packets to subject to the INPUT chain of rules, which to the FORWARD chain of rules, and which to the OUTPUT chain of rules? Additionally, which part of a packet is examined in order to figure out whether or not the condition part of a rule is satisfied?

 

4.     Show how you would use the iptables command to reject all incoming SYN packets that seek to open a new connection with your machine?

 

 

5.     What is the option given to the iptables command to flush all the user-defined chains in a table? How do you flush all the rules in a table?

 

6.     What are the icmp-types associated with the echo-request (ping) and with the echo-reply (pong) packets?

 

7.     What is the iptables command if you want your machine to accept only the incoming connection requests for the SSHD server you are running on your machine? (You want your machine to drop all other connection request packets from remote clients.)

 

8.     What is connection tracking? How does an iptables-based firewall know that the incoming packets all belong to the same ongoing connection?

 

Source: Lecture 18 of Lecture Notes on Computer and Network Security by Avi Kak of Purdue University.

Project Dates:

· Proposal : April 21st, 2014 (e-mail  to mehmet.emin.dalkilic@ege.edu.tr)

· Presentation :  last week of the term (in class)

· Report :  During the presentation (submit hard copy)

· Individual or two-people projects are allowed

·        Implementation projects or literature survey/ product security analysis type projects are accepted

·         All Reports and Presentations will be in TURKISH!

·         Sample Project topics:

1.      Internet Privacy

2.      Internet anonymity

3.      Malware

4.   Steganography 

5.      Digital Watermarking

6.      Mobile (electronic) signature

7.      Smart Card applications

8.      Authentication applications- BAN Logic

9.      secure electronic voting 

10.  e-money (bitcoin)

11. Latest Firewall technology

12. Latest IDS technology

 

 

 

 

 

 


Send any comments or suggestions to dalkilic
Last revised in March, 10 1997

 

 

 

 

 

 

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