computer network (5.101)

Lecture Network security: Chapter 1 - Dr. Munam Ali Shah

10/05/2018
89.298
523
Trang Nguyễn
An ninh - Bảo mật

This chapter provides knowledge of network security. In this chapter students will be able to: provide a survey and exposure of both principles and practice of network security; determine threats to a network and how to protect organization’s systems and data from attacks. This chapter will also help you understand and learn counter measures used to prevent, detect and correct security violations in a computer network.

Lecture Network security: Chapter 2 - Dr. Munam Ali Shah

10/05/2018
22.460
293
Trần Huyền Linh
An ninh - Bảo mật

In this chapter, the following content will be discussed: Hackers and attackers; threats, risks, vulnerabilities and attacks; why is security difficult to achieve; threat modelling and risk assessment.

Lecture Network security: Chapter 24 - Dr. Munam Ali Shah

10/05/2018
49.989
285
Linh Ng
An ninh - Bảo mật

In this chapter: We will continue our discussion on Needham-Schroeder Protocol and will see how does it work, digital signature standard (DSS) and digital signature algorithm (DSA) will be discussed, we will talk about authentication applications, and will study kerberos which is an authentication service developed at MIT.

Lecture Network security: Chapter 9 - Dr. Munam Ali Shah

This chapter we will continue our discussion on mobile device security, robust security network (RSN) and IEEE802.11i network security model. After completing this unit, you should be able to present an overview of security threats and countermeasures for mobile networks, understand the basics of IEEE802.11i standard for robust security, describe the principal elements for a network security model.

Lecture Network security: Chapter 11 - Dr. Munam Ali Shah

10/05/2018
37.557
185
Ha Do
An ninh - Bảo mật

The topic discussed in this chapter are cryptography as a network security tool. In this chapter we will talk about 3-Dimesions of cryptography; cryptanalysis and brute force attacks; classical ciphers: substitution cipher, transposition cipher.

Lecture Network security: Chapter 25 - Dr. Munam Ali Shah

10/05/2018
82.869
578
Thu Huong
An ninh - Bảo mật

This chapter we will continue our discussion on authentication applications and more precisely we will talk about kerberos in detail. kerberos versions, threats and vulnerabilities will also be discussed.

Lecture Network security: Chapter 16 - Dr. Munam Ali Shah

10/05/2018
13.890
842
Nguyễn Lê Khanh
An ninh - Bảo mật

The topics discussed in this chapter are stream cipher features and characteristics; we will explore RC4, RC5, blowfish and triple DES. After studying this chapter you will be able to present an understanding of the principles for stream and block ciphers, use and understand the different techniques used for stream ciphers.

Lecture Network security: Chapter 4 - Dr. Munam Ali Shah

10/05/2018
87.625
962
Pep Nam
An ninh - Bảo mật

In this chapter, the following content will be discussed: Security through obscurity, aspects of security, OSI security architecture, active and passive attacks, protection and access rights. After studying this chapter you will be able to describe the difference between security and protection, to understand access privileges and create access right metrix, to understand how different security tools be used.

Lecture Network security: Chapter 29 - Dr. Munam Ali Shah

10/05/2018
36.635
481
Nguyễn Châu Anh
An ninh - Bảo mật

The topic discussed in this chapter are email security, pretty good privacy, secure/multipurpose internet mail extensions (S/MIME). In this chapter you would be able to present an understanding of how to secure email over the internet, you would be able demonstrate knowledge about PGP and its operation.

Lecture Network security: Chapter 8 - Dr. Munam Ali Shah

10/05/2018
92.525
821
Nguyễn Mai
An ninh - Bảo mật

The topic discussed in this chapter are internet security, wwireless security. After studying this chapter you will be able to present an overview of security threats and countermeasures for wireless networks, understand the unique security threats posed by the use of mobile devices with enterprise networks.

Lecture Network security: Chapter 13 - Dr. Munam Ali Shah

10/05/2018
38.137
505
Anh Dang
An ninh - Bảo mật

The topics discussed in this chapter are: Our discussion on more cryptographic schemes will continue, poly-alphabetic cipher will also be discussed, we will explore one time pad and OTP, the security and practicality of OTP will also be discussed, transposition cipher with an example of rail fence cipher will form part of our today’s lecture.

Lecture Network security: Chapter 20 - Dr. Munam Ali Shah

10/05/2018
36.944
455
Phương Linh
An ninh - Bảo mật

In this chapter, we will talk about confidentiality using symmetric encryption, we will also explore link vs. end to end encryption, key distribution design constraints will be explored.

Lecture Network security: Chapter 21 - Dr. Munam Ali Shah

10/05/2018
71.396
400
Công Bình Đào
An ninh - Bảo mật

In this chapter, you will learn: Key distribution mechanism will be discuss in detail, the role of a KDC (key distribution center), key distribution design constraints will be explored. In this chapter students will be able to present an understanding of the confidentiality using symmetric encryption, demonstrate knowledge about the key distribution.

Lecture Network security: Chapter 26 - Dr. Munam Ali Shah

10/05/2018
55.874
128
Trang Ngoc
An ninh - Bảo mật

The learning objectives for this chapter include: You would be able to present an understanding of transaction that is carried out over the internet, you would be able demonstrate knowledge about different entities and their role in a SET.

Lecture Network security: Chapter 22 - Dr. Munam Ali Shah

10/05/2018
74.824
515
Hải Nguyễn
An ninh - Bảo mật

In this chapter you would be able to present an understanding of the confidentiality and message authentication mechanism, you would be able demonstrate knowledge about different functions and protocols used for message authentication.

Lecture Network security: Chapter 19 - Dr. Munam Ali Shah

10/05/2018
46.075
410
Xảo Ngân
An ninh - Bảo mật

The topic discussed in this chapter are: Attacks on pseudorandom generators, tests for pseudorandom functions, true random generators. After studying this chapter you will be able to present an understanding of the random numbers and pseudorandom numbers; understand the use and implementation of TRNG, PRNG and PRF.

Lecture Network security: Chapter 31 - Dr. Munam Ali Shah

10/05/2018
95.220
583
Trần Thạch
An ninh - Bảo mật

This is the last part of the course. The main concepts that are discussed in this part are: Tools and techniques to protect data during the transmission over the Internet, Sobig F. worm, grappling Hook attack, Morris Internet worm, Overview of the Internet security protocols such as https and ssh.

Lecture Network security: Chapter 17 - Dr. Munam Ali Shah

10/05/2018
23.898
625
Hà Trinh
An ninh - Bảo mật

The topic discussed in this chapter are: We will explore the need, features and characteristics of public key cryptography; the working/function of a public key cryptography scheme will be discussed in detail; RSA, as an example, will be explained.

Lecture Network security: Chapter 18 - Dr. Munam Ali Shah

The topics discussed in this chapter are: RSA algorithm, introduction to pseudorandom numbers, some pseudorandom number generators, attacks on pseudorandom generators, tests for pseudorandom functions, true random generators.

Lecture Network security: Chapter 14 - Dr. Munam Ali Shah

10/05/2018
35.587
217
Thu Thảo
An ninh - Bảo mật

This chapter includes contents: We will explore block ciphers and stream ciphers with some examples, second dimension of the cryptography, what is fesitel structure and why is it used will also be part of today’s lecture, importantly, we will discuss data encryption standard (DES).

Lecture Network security: Chapter 15 - Dr. Munam Ali Shah

10/05/2018
61.589
434
Quỳnh Phương
An ninh - Bảo mật

The contents of this chapter include all of the following: discussion on block cipher and stream cipher, detail the symmetric key cryptography, we explored feistel cipher and its structure, the DES was also discussed in detail.

Lecture Network security: Chapter 28 - Dr. Munam Ali Shah

10/05/2018
85.906
625
MK Nguyễn
An ninh - Bảo mật

In this chapter: We will talk about what Internet security is and how to ensure security while browsing through the internet, we will also see what spyware are and how do they look like, we will also discuss few methods that can be used to avoid spywares, we will also see a couple of examples of phishing on the internet.

Lecture Network security: Chapter 30 - Dr. Munam Ali Shah

10/05/2018
27.206
117
Lương Kim
An ninh - Bảo mật

The topic discussed in this chapter are: Secure Socket Layer (SSL), three SSL-specific protocols that use the SSL Record Protocol, integrating SSL/TLS with HTTP => HTTPS, HTTPS and SSH. This chapter you would be able to present an understanding of how web security is achieved through different protocols; you would be able demonstrate knowledge about SSH, HTTPS, TLS etc.

Lecture Network security: Chapter 6 - Dr. Munam Ali Shah

10/05/2018
25.490
991
Luong Chi
An ninh - Bảo mật

The topics discussed in this chapter are botnets, more discussion on DoS attacks, cost of a DoS attacks, ICMP echo datagrams, TCP 3-way handshake, TCP SYNC flood attack. After studying this chapter you will be able to distinguish between different types of security attacks, identify and classify which security attacks leads to which security breach category.

Lecture Network security: Chapter 7 - Dr. Munam Ali Shah

10/05/2018
32.657
327
Hoang Nam Van Vo
An ninh - Bảo mật

In this chapter we will discuss: Some more discussion on DDoS attacks, security in wireless networks, types of WLAN and relevant security mechanism, different ways to secure a WLAN. After studying this chapter you will be able to understand why wireless LANs are more prone to security threats and vulnerabilities, to identify and classify among different solutions that can be used to secure a WLAN.

Lecture Network security: Chapter 10 - Dr. Munam Ali Shah

The topic discussed in this chapter are cryptography as a network security tool. In this chapter we will talk about what cryptography is and why is it used; some basic terminologies such as plain text, cipher text, cryptanalysis will also form part of todays lecture discussion; types of cryptography attacks.

Lecture Network security: Chapter 3 - Dr. Munam Ali Shah

10/05/2018
22.750
452
Hung Pham
An ninh - Bảo mật

In this chapter, the following content will be discussed security tradeoffs; protection, detection and reaction; how to test security. After studying this chapter you will be able to describe the security tradeoffs, to understand why is it difficult to achieve full security, to understand how different security tools be used.

Lecture Network security: Chapter 23 - Dr. Munam Ali Shah

In previous lecture we explored the limitations of the centralized key distribution and have explored key distribution in a decentralized fashion. We discussed in detail, how message authentication could be achieved. There are several functions and protocols used for message authentication. This chapter you would be able to present an understanding of the higher level message authentication mechanism, demonstrate knowledge about different protocols used for message authentication.

Lecture Network security: Chapter 27 - Dr. Munam Ali Shah

10/05/2018
61.172
303
Nhật Hạ
An ninh - Bảo mật

In this chapter we will continue our discussion on SET and explore the following; payment processing in SET: purchase request, payment authorization, payment capture. The learning objectives for this chapter include: You would be able to present an understanding of transaction that is carried out over the internet, you would be able demonstrate knowledge about different entities and their role in a SET and how the actual payment is processed in SET.

Lecture Network security: Chapter 32 - Dr. Munam Ali Shah

10/05/2018
52.528
106
Trà My
An ninh - Bảo mật

The topic discussed in this chapter are: Security threats in mobile devices environment, cryptography, what is cryptology? terminology, another way to represent the concept of cryptography, goals of the adversary, cryptanalysis, language redundancy and cryptanalysis,...