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Science

A survey, shows that less then 40% of the British public feel they are well informed about science.

New Articles - Earth's Carbon Cycle Ultra Sonic Frogs Environmental Niche & Dinosaurs Seismic Waves Global Warming Life Support Systems Introduction to the Big Bang The Problem of Acid Rain

Our science section is in production with a proposed 1 Mar 07 "Grand launch" date.

Technology

The Linux Convert site explains how, even today, building your own linux box can be cheaper than getting an off the shelf Windows PC. There is a new article on why you should use linux there now.

New articles: Firewall Bypass Attack Snort For Newbies Malware and Intrusions Intrusion Detection Systems Malware, Trojans and Virus infections and Infection Removal

If you have any comments or suggestions for topics we should cover under the technology banner then please stop by the discussion board and let us know.

Intrusion Detection Systems

Specific requirements of this IDS

In order to work and be effective on a long term basis, the ideal system of this type would send data to a permanent database of normal patterns of network use, that use statistical formulae to identify abnormal patterns and that allow the end-user to record specific explanations for normal variations in the pattern of traffic.

Take for example a hypothetical Icarus University. One would expect very large numbers of students to log on to the network at certain times of the year – approaching examination time - and not at all at others (summer vacation break) i.e. The specific organisation’s characteristics should be taken into account in building a specific advanced IDS for any given organisation.

In the case of this project it was not considered reasonable to identify normal patterns of usage, given that there was only a limited volume of stored network data gathered over a long period – the cw.enc file, and no simple way to approach an identification of the normal uses of the network through discussion with the network staff and users, as would normally be the case if one was setting up a heuristic model.

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