EC3401 NETWORKS AND SECURITY

UNIT I NETWORK MODELS AND DATALINK LAYER

Overview of Networks and its Attributes – Network Models – OSI, TCP/IP, Addressing – Introduction to Datalink Layer – Error Detection and Correction – Ethernet(802.3)- Wireless LAN – IEEE 802.11, Bluetooth – Flow and Error Control Protocols – HDLC – PPP.

UNIT II NETWORK LAYER PROTOCOLS

Network Layer – IPv4 Addressing – Network Layer Protocols(IP,ICMP and Mobile IP) Unicast and Multicast Routing – Intradomain and Interdomain Routing Protocols – IPv6 Addresses – IPv6 – Datagram Format – Transition from IPv4 to IPv6.

UNIT III TRANSPORT AND APPLICATION LAYERS

Transport Layer Protocols – UDP and TCP Connection and State Transition Diagram – Congestion Control and Avoidance(DEC bit, RED)- QoS – Application Layer Paradigms – Client – Server Programming – Domain Name System – World Wide Web, HTTP, Electronic Mail.

UNIT IV NETWORK SECURITY

OSI Security Architecture – Attacks – Security Services and Mechanisms – Encryption –Advanced Encryption Standard – Public Key Cryptosystems – RSA Algorithm – Hash Functions – Secure Hash Algorithm – Digital Signature Algorithm.

UNIT V HARDWARE SECURITY

Introduction to hardware security, Hardware Trojans, Side – Channel Attacks – Physical Attacks and Countermeasures – Design for Security. Introduction to Blockchain Technology.

PRACTICAL EXERCISES: 30 PERIODS

Experiments using C

1. Implement the Data Link Layer framing methods,
2. i) Bit stuffing, (ii) Character stuffing
3. Implementation of Error Detection / Correction Techniques
4. i) LRC, (ii) CRC, (iii) Hamming code
5. Implementation of Stop and Wait, and Sliding Window Protocols
6. Implementation of Go back-N and Selective Repeat Protocols.
7. Implementation of Distance Vector Routing algorithm (Routing Information Protocol) (Bellman-Ford).
8. Implementation of Link State Routing algorithm (Open Shortest Path First) with 5 nodes (Dijkstra’s).
9. Data encryption and decryption using Data Encryption Standard algorithm.
10. Data encryption and decryption using RSA (Rivest, Shamir and Adleman) algorithm.
11. Implement Client Server model using FTP protocol.

Experiments using Tool Command Language

1. Implement and realize the Network Topology – Star, Bus and Ring using NS2.
2. Implement and perform the operation of CSMA/CD and CSMA/CA using NS2.

TEXTBOOKS

1. Behrouz.A.Forouzan, Data Communication and Networking, Fifth Edition, TMH, 2017.(Unit – I,II,III)
2. William Stallings, Cryptography and Network Security, Seventh Edition, Pearson Education, 2017(Unit- IV)
3. Bhunia Swarup, Hardware Security –A Hands On Approach, Morgan Kaufmann, First edition, 2018.(Unit – V).

REFERENCES

1. James.F.Kurose and Keith.W.Ross, Computer Networking – A Top – Down Approach, Sixth Edition, Pearson, 2017.
2. Doughlas .E.Comer, Computer Networks and Internets with Internet Applications, Fourth Edition, Pearson Education, 2008.

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