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Host-Based IDSA host-based IDS (HIDS) resides on a particular computer or server and monitors activity only on that system. HIDS also called as system integrity verifiers as they benchmark and monitor the status of key system files and detect when intruder creates, modifies, or deletes files. It is efficient enough to monitor system configuration databases. Most of the HIDSs work on principle of configuration or change in management. The HIDS examines the files and logs for predefined events. The advantage of HIDS over NIDS is which it can be installed usually so that it can access information encrypted when traveling over network.Advantages and Disadvantages of HIDSsAdvantages-Can detect local events on host systems and detect attacks that may elude a network based IDS- Functions on host system, where encrypted traffic will have been decrypted and is available for processing.-Not affected by use of switched network protocols-Can detect inconsistencies in how applications and systems programs were used by examining records stored in the audit logs.Disadvantages-Pose more management issues-Vulnerable both to direct attacks and attacks against host operating system-Does not detect multi host scanning, nor scanning of non-host network devices-Susceptible to some denial of service attacks-Can use large amounts of disk space-Can inflict a performance overhead on its host systems
LOCAL TALK Apple discovered the LAN technology that uses bus topology. Its interface is added with all Macintosh computers. It has very low speed i.e. 230.4Kbps. Also it is ch
Question: Human telephone conversations are characterized by irregular pauses, alternating with irregular bursts of speech. In contrast, communication via computers is char
Australian government sites were mandated to conform to at least single 'A' level of the World Wide Web Consortium (W3C) Web Accessibility Initiative (WAI) standards, by the end of
Problem (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. The second screen capture is from the data portion of the frame.
Question a) From the capture below: Give the datagram source IP address, upper layer protocol, Total length in decimal and header checksum in hexadecimal; the segment source po
#questioAn elliptic curve y^2=x^3+ax+b(mod29) includes points P=(7, 15) and Q=(16, 13) a)Determine the equation of the crve b) Determine all values of x for which there is no point
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(a) Using the extended Euclidean algorithm, find the multiplicative inverse of 504 mod 67. (b) Decrypt the following ciphertext, which has been encrypted using Caesar cipher:
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