Topology and mobility in a Mobile Ad Hoc Network (MANET) is a key factor that affects the perform... more Topology and mobility in a Mobile Ad Hoc Network (MANET) is a key factor that affects the performance of the protocol. Research in the field of MANET is usually done by using simulation. Among other simulation parameters, the model of mobility plays a very important role in determining the performance of the protocol in MANET. This research present Manhattan mobility model in reactive routing protocols DSR with Random Waypoint than that already exists in the network simulator NS2. Performance comparison was done with a variety of nodes, different simulation speed and area. QOS parameters used and analyzed included packet delivery ratio and average end-to-end delay. The research result shows that the performance of DSR routing protocol with mobility was affected two models vary across different mobility models showed with Packet Delivery Ratio fairly stable (between 90 to 100) and there were some improvements in certain simulations, and the value of Average End To End Delay increases and decreases in accordance with certain simulation models used mobility.
DDoS attacks are mainly used for flooding a particular victim with massive traffic and paralyzing... more DDoS attacks are mainly used for flooding a particular victim with massive traffic and paralyzing its services. Recent works aim at countering DDoS attacks by fighting the underlying vector, which is usually the use of botnets. The sudden increase in traffic can cause the server to offer degraded performance. My Doom devastation on Microsoft, wiki leaks encounter with ddos barrages are some examples to highlight the impact. A botnet is a large network of compromised machines (bots) controlled by one entity (the master). The master can launch synchronized attacks, such as DDoS, by sending orders to the bots via a Command & Control channel and other major Internet players like Amazon, CNN, and Yahoo are no exception. Early discovery of these attacks, although challenging, is necessary to protect victim server's network infrastructure resources. Previous intrusion prevention systems like FireCol although efficient in thwarting DDoS, its architecture is based on ISP collaboration and virtual protection rings. We propose to use an IPS rules (Snort rules) driven DDoS detection approach that checks various parts of a data packet and not just the header. SNORT is one popular and actively developing open-source Intruder Detection System that uses such a set of signatures known as SNORT rules. This enables the detection system to eliminate other forms DoS attacks such as Slow Read DoS attack. Its effectiveness and low overhead, as well as its support for incremental deployment in real networks are demonstrated.
Topology and mobility in a Mobile Ad Hoc Network (MANET) is a key factor that affects the perform... more Topology and mobility in a Mobile Ad Hoc Network (MANET) is a key factor that affects the performance of the protocol. Research in the field of MANET is usually done by using simulation. Among other simulation parameters, the model of mobility plays a very important role in determining the performance of the protocol in MANET. This research present Manhattan mobility model in reactive routing protocols DSR with Random Waypoint than that already exists in the network simulator NS2. Performance comparison was done with a variety of nodes, different simulation speed and area. QOS parameters used and analyzed included packet delivery ratio and average end-to-end delay. The research result shows that the performance of DSR routing protocol with mobility was affected two models vary across different mobility models showed with Packet Delivery Ratio fairly stable (between 90 to 100) and there were some improvements in certain simulations, and the value of Average End To End Delay increases and decreases in accordance with certain simulation models used mobility.
DDoS attacks are mainly used for flooding a particular victim with massive traffic and paralyzing... more DDoS attacks are mainly used for flooding a particular victim with massive traffic and paralyzing its services. Recent works aim at countering DDoS attacks by fighting the underlying vector, which is usually the use of botnets. The sudden increase in traffic can cause the server to offer degraded performance. My Doom devastation on Microsoft, wiki leaks encounter with ddos barrages are some examples to highlight the impact. A botnet is a large network of compromised machines (bots) controlled by one entity (the master). The master can launch synchronized attacks, such as DDoS, by sending orders to the bots via a Command & Control channel and other major Internet players like Amazon, CNN, and Yahoo are no exception. Early discovery of these attacks, although challenging, is necessary to protect victim server's network infrastructure resources. Previous intrusion prevention systems like FireCol although efficient in thwarting DDoS, its architecture is based on ISP collaboration and virtual protection rings. We propose to use an IPS rules (Snort rules) driven DDoS detection approach that checks various parts of a data packet and not just the header. SNORT is one popular and actively developing open-source Intruder Detection System that uses such a set of signatures known as SNORT rules. This enables the detection system to eliminate other forms DoS attacks such as Slow Read DoS attack. Its effectiveness and low overhead, as well as its support for incremental deployment in real networks are demonstrated.
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Papers by Y. Hasyim