Wireless Intrusion Detection Systems Essay Example | Topics and Well Written Essays - 1000 words

Wireless Intrusion Detection Systems - Essay Example One of the common wireless intrusion methods is known as ‘Wardriving’. Normally, this is done by using a Windows laptop running Wardriving software, for example NetStumbler, and equipped with an IEEE 802.11b adapter and external aerial. The ‘Wardriver’ moves near the wireless network area expecting to detect IEEE 802.11b signals that have spilled out onto the area around. NetStumbler search for beacon frames from the access points (APs) and processing these beacon frames, it is feasible to resolve the encryption strength, channel, and type of hardware used. The Wardriver may also get other details of the network such as the Service Set Identifier (SSID). Usually, this is done as a hobby and such hobbyists may combine the data with Global Positioning System (GPS) information to generate geographic maps of wireless networks in the area and their configurations. There are different software’s available for Wardriving, basing on the platform used. As a ma tter of fact, active software like NetStumbler, dStumbler, and MiniStumbler transmit probe request frames to extract responses from APs (Wright, 2002). This helps their probability of detecting APs. Another popular intrusion method is the Linux program AirSnort, most commonly used tool for WEP key extraction. Intruder by means of AirSnort would clandestinely gather wireless network traffic of the intended network. AirSnort can find out the WEP key of the network by processing the weak frames collected. There is also possibility of denial-of-service (DoS) attack on the network.

Research methods Essay Example | Topics and Well Written Essays - 1500 words

Research methods - Essay Example At the next level, the precise structure and the methods used for data collection and analysis are expected to be less clear in qualitative studies compared to quantitative ones (Kumar 2010). As a result, a misunderstanding may often results in regard to the characteristics of a qualitative study; in certain qualitative studies, their design is identical with the data collection method, as, for example, in the case of the participant observation’ (Kumar 2010, p.104). Further differences can be identified regarding the philosophical underpinning of the two approaches. More specifically, the qualitative studies are usually characterized as ‘naturalistic’, being depended on social evidence, while the quantitative studies are ‘positivistic’ (Rapport 2004, p.2), being depended on specific facts which can be analysed using tools that can ‘produce generalisable observations’ (Rapport 2004, p.2). On the other hand, qualitative studies are likely to emphasize on the relationship between the causes and the effects of particular events while the qualitative studies are based on the analysis of human behaviour, as reflected in the responses of participants to a series of events. In accordance with Lee (1999) one of the key characteristics of the qualitative approach is that it is ‘context – free’ (Lee 1999, p.8), meaning that it is not based on empirical results but it rather refers to findings that reflect the local conditions, as related to a series of events. From this point of view, researchers using the qualitative approach give emphasis on the responses of participants to specific events (Saunders, Lewis and Thornhill 2009); in opposition, in quantitative studies researchers tend to focus on the development of empirical results, which need to be fully justified, as of the methods used for generating them, and verified; in qualitative approach, the researcher does not have such concerns since the qualit ative study can refer to the views of a limited number of participants (Hansen 2007); these views do not have to be tested as of their validity as in the case of quantitative studies. Moreover, Elliott (2005) noted that qualitative and quantitative approaches can be characterized as ‘divergent genres’ (Elliott 2005, p.184), based on different methods of data presentation; in quantitative studies, efforts need to be made for persuading the readers on the validity of results (Elliott 2005, p.184). In qualitative studies there is no such pressure; the reader has to be informed on the responses of the participants without further explanations on the characteristics of the data and the process involved (Elliott 2005). Section B In the context of the qualitative approach a series of different data collection methods can be used, in accordance with the research aims, the availability of sources and the target population. In the study of Bryman and Bell (2007) emphasis is given on the high range of data collection methods that respond to the requirements of the qualitative approach. Reference is made to five of the most known methods of data collection as used in qualitative studies: a) the participant observation in which the research has to observe the response of a group of persons to particular events; usually, the social group chosen