UBE 528
NETWORK SECURITY
2016-2017 SPRING
Catalog
Data: Network
Security, 3 hour lectures
Principles of Network Attacks and Defenses, Cryptography, Authentication
and E-mail security
Instructor: PROF.DR.M.E.DALKILIC
Textbooks
·
Counter Hack, 2nd. Ed., Ed Skoudis, 2005
·
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
·
Computer Networking, 6th ed. Kurose and Ross, 2013
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
·
Attacks
·
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
Project Dates:
· Proposal : April 19th,
2017 (e-mail to mehmet.emin.dalkilic@ege.edu.tr)
· Presentation : last week of the term
i.e., May 31st 2017 (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
13. White box
cryptography
Homework #1 (due: March
1st, 2017)
1.Five layer Network model
(Application, Transport, Network, Data Link, Physical), briefly explain the
function of each layer.
2. For each
layer mentioned above list the most important protocol or protocols (at
most two for each layer) and briefly explian what does each protocol do.
Homework #2
(Due date: March 15th, 2017)
1. Explain the Smurf Attack.
2. Explain source routing and spoofing attack using source routing.
3. 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.
Midterm Exam date: April 12th, 2017 Important Note: An A4 help sheet is allowed during the
midterm exam. You can write (no photocoying allowed!) on both sides of the
help sheet.
Homework
#3
(Due date: March 29th, 2017)
Homework
3 typed
Homework
#4
(Due date: April 5th, 2017)
1.Briefly describe the HMAC algorithm. Also explain the steps
done on the sender and receiver when HMAC used for message authentication.
2. Explain, in a step by step fashion, the man in the middle
attack against Diffie-Hellman Key Exchange Protocol.
3. 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?
4. 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 12th, 2017)
Problems 10, 13, 20 ve 25 from Chapter 8 of
Kurose&Ross, Computer Networking, 6th. ed.
Homework5typed
Also you may want to take a look at Problems 22 and 24 ExtraQuestionsTyped
for exam preparation.
Homework
#6 (LAST HOMEWORK)
(Due date: April 26th, 2017)
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.
Send any
comments or suggestions to dalkilic
Last revised in March, 10 1997
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