Mark-aided distributed filtering by using neural network for DDoS defense

Currently Distributed Denial of Service (DDoS) attacks have been identified as one of the most serious problems on the Internet. The aim of DDoS attacks is to prevent legitimate users from accessing desired resources, such as network bandwidth. Hence the immediate task of DDoS defense is to provide as much resources as possible to legitimate users when there is an attack. Unfortunately most current defense approaches can not efficiently detect and filter out attack traffic. Our approach is to find the network anomalies by using neural network, deploy the system at distributed routers, identify the attack packets, and then filter them. The marks in the IP header that are generated by a group of IP traceback schemes, Deterministic Packet Marking (DPM)/Flexible Deterministic Packet Marking (FDPM), assist this process of identifying attack packets. The experimental results show that this approach can be used to defend against both intensive and subtle DDoS attacks, and can catch DDoS attacks’ characteristic of starting from multiple sources to a single victim. According to results, we find the marks in IP headers can enhance the sensitivity and accuracy of detection, thus improve the legitimate traffic throughput and reduce attack traffic throughput. Therefore, it can perform well in filtering DDoS attack traffic precisely and effectively.

Effect of hydrogen/air flow rates and scan rate on the flame ionisation detection response of phopholipids, and their quantitative and qualitative analysis by Iatroscan (Mark‐6s) TLC‐FID

The combined effect of scan speed, hydrogen and air flow rates on the flame ionization detection (FID) peak response of phospholipid classes has been studied to determine the optimum levels of these parameters. The phospholipid composition of different types of commercial lecithins, as well as lecithins combined with fish oils, has been analyzed by Iatroscan TLC‐FID Mark‐6s under optimized conditions. An air flow rate of 2 L/min, a hydrogen flow rate of 150–160 mL/min, and a scan speed of 30 s/rod seem to be the ideal conditions for scanning phospholipids with complete pyrolysis in the flame in the Mark‐6 model. Increasing the scan speed rapidly decreased the FID response. A hydrogen flow rate as high as 170 mL/min could be used at relatively low air flow rates (&#x003C2 L/min) and the response declined when both air flow rate and hydrogen flow rate increased simultaneously. Both linear and curvilinear relationships had highly significant correlations (p&#x003C0.01) with the sample load. Time course reactions, including the hydrolysis of phosphatidylserine using enzymes, can be successfully monitored by the Iatroscan TLC‐FID Chromarod system.

The weight of the thing left its mark

The weight of the thing left its mark imagines and abstracts a domestic situation where the relationships are under constant negotiation and held by what has been left unsaid. Framed by the unexpected use of kitchen cutlery the performance has a loosely knit structure that makes the dancing immediate and the quality of attention very alive.

'Waltzing Matilda' - registrable as a trade mark or not? (first instance decision)

In brief: The Federal Court has ruled against an application to register the trade mark 'WALTZING MATILDA' for a variety of foods and associated services. It found that the Winton Shire Council and the Waltzing Matilda Centre Limited (also in Winton, Queensland) had the better rights to ownership of the Australian icon – despite them not having coined the term 'Waltzing Matilda'.

Progress report : 'Waltzing Matilda' trade mark case (appeal decision)

In brief: In our August 2002 Bulletin, we reported on the decision of a single judge in the Federal Court that the Winton Shire Council in Queensland and the Waltzing Matilda Centre Limited (also in Winton) had better rights to ownership of the Australian icon 'WALTZING MATILDA', based on prior trade mark use, than the original applicant for the trade mark, Brenda Lomas. Ms Lomas has now won an appeal against this decision in the Full Court of the Federal Court.