Pusat IPv6 Termaju Negara - Tesis
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Browsing Pusat IPv6 Termaju Negara - Tesis by Type "master thesis"
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- PublicationEnhanced Trust-nd Protocol To Prevent Temporal Denial-of-service Vulnerabilities On Ipv6 Link-local Network(2023-09)Hasbullah, Iznan HusainyTrust-ND is a trust-based distributed security mechanism to secure IPv6 link-local networks as an alternative to the highly complex Secure Neighbor Discovery (SEND) protocol. However, theoretical analysis and experimental research revealed that the Trust-ND protocol is susceptible to temporal Denial-of-Service vulnerabilities due to timestamp reference, field size and format, and verification rule. This research aims to prevent temporal DoS vulnerabilities on IPv6 link-local networks by enhancing Trust-ND without jeopardizing its original structure to retain its advantages over SEND. The proposed enhanced version of Trust-ND, called eTrustND, addresses the vulnerabilities in three stages, (i) Timestamp Formulation, (ii) Enhanced Trust-ND, and (iii) Rule-based verification mechanism. The first stage changes the reference time from system time to UTC, the 24-hour time format in hexadecimal to epoch second in integer. It also increases the precision from one hundredth to one ten-thousandth second. The second stage utilizes the Trust-ND’s Reserved field for the sub-second value and changes the timestamp field data type from byte to IntField. The third stage proposes a rule-based verification mechanism to handle out-of-sync computer clocks, preventing temporal DoS vulnerabilities. The experiment results on a testbed demonstrate that eTrustND prevents temporal-based DoS vulnerabilities without jeopardizing the original Trust-ND packet structure and adding overheads (computation and bandwidth).
- PublicationProviding Ubiquitous Positioning Using Context Aware Handover Algorithm(2012-10)Mohammod Sazid Zaman KhanThis research aims to solve the problem of ubiquitous positioning by designing a context aware handover algorithm for positioning systems. The algorithm performs handover among positioning systems based on important contextual factors related to position determination with efficient use of battery. In addition, the design ensures that no positioning system is allowed to operate for an indefinite period of time without getting a position. The proposed solutions are implemented in an Android application named Locate@nav6.