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(a) Show four Network Security attacks. How do they compromise security?
(b) In what ways do the following devices or services contribute to security:
(i) Firewall (ii) Intrusion Detection System (IDS) (iii) Secure Socket Layer (SSL)
(c) What are the objectives of access control? Give four examples of such systems.
(d) An attacker has the intention of disrupting secure communications by inserting bogus packets in the channel. Discuss how such an attack would succeed in systems protected by IP Sec and SSL.
How to pretect my computer from attacking
Network can be distinguished by shape. According to which there are three most popular methodologies, which are shown as follows; Star Ring Bus
A digital signature is a stamp on the data, which is unique and very hard to forge. A digital signature has 2 steps and creates 2 things from the security perspective. STEP 1
Why is WEP-based authentication pointless?
Public Key Infrastructure (PKI) It is integrated system of software, encryption methodologies, protocols, legal agreements, and 3rd-party services enabling users to communicate
QUESTION a) Compare and contrast between static and dynamic routing. b) What are the merits (five merits) and limitations (3 limitations) of using Open Shortest Path First
Assume that the RSA problem is hard, prove that the RSA encryption is secure against IND- CPA. Provide a game between an adversary A and a simulator (or challenger) B.
Question: (a) Give 2 benefits of using IPsec. (b) IPSec uses two protocol for security: Authentication Header protocol (AH) and the Encapsulated Security Header Protocol (
FRAGMENTATION One method is to limit datagram size to smallest MTU of any server. IP needs fragmentation i.e. datagrams can be divided into pieces to fit in network with small
ACCESS CONTROL DEVICES Successful access control system includes number of components, which depends on system’s requirements for authentication and authorization. Powerful auth
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