By Jie Wang
Desktop community safeguard: idea and perform introduces to the reader an entire and concise view of community defense. It offers in-depth theoretical assurance of contemporary developments and functional ideas to community safety threats. This e-book can be utilized for a one-semester community safety direction for graduate and upper-level undergraduate scholars, in addition to a reference for IT execs. Dr. Wang has been Professor of computing device technology on the college of Massachusetts Lowell considering the fact that 2001, Director of its middle for community and data safety due to the fact 2004,and Chairman of its division of laptop technological know-how for the reason that 2007.
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Additional resources for Computer Network Security: Theory and Practice
Several such products are avatlable. For example, ShieldsUP! 10). 8 Traffic Analysis The purpose of traffic analysis is to determine who is talking to whom by analyzing IP packets. Even if the payload of the IP packet is encrypted, the attacker may still obtain useful information from analyzing IP headers. An IP header contains the source IP address and the destInatIOn IP address, whIch reveal who IS sendIng messages to whom. e. 2 Common Attacks and Defense Mechanisms 19 the port numbers can also be obtained.
8 shows thIS secunty model. Cryptosystems use computer cryptography and secunty protocols to protect data. Security protocols mclude encryption protocols, authentIcatIOn protocols, and key management protocols. Fig. 9 shows the encryption and decryption components. It is customary to use E to denote an encryption algorithm, D its decryption algorithm, and K the secret key. Flrewalls, AMS software, and IDS systems are used to protect data stored m networked computers. Flrewalls are special software packages mstalled in computers and networking devices that check incoming and outgoing network packets.
Third, relevant laws should be established so that employees who planted logic bombs will face criminal charges. With these countermeasures in place, unhappy employees would think twice before planting logic bombs in programs. The major counter measure of backdoors is to check source code, which should be conducted by an independent team. Spyware Spy ware IS a type of software that mstalls Itself on the user's computer. Spyware IS often used to momtor what users do and to harass them wIth popup commercial messages.