advisory

Anonymous
As stated, the following sections describe a number of tools and techniques that can be used to reduce the risk of misuse of the network. They are presented here in the context of providing network access for guests, though many of them can also be used for local users. None of the tools can make misuse impossible: each section describes which risks can be reduced by a particular tool and which risks may remain or be increased.
Anonymous
Organisations that connect to Janet agree to abide by the Terms for the Provision of the Janet Service, including complying with the Janet Connection, Security and Acceptable Use Policies.2 These Policies exist to support the use of Janet for its intended purpose as the UK’s education and research network. The Connection Policy ensures that organisations are only connected to the network where this will benefit that purpose.
Anonymous
The purposes of an educational organisation may often require it to receive guests from other organisations, both from within the education community and outside. Researchers, teachers, students and conference delegates may all come to the organisation from elsewhere and wish, or need, to use the host organisation’s network facilities. Where guests come to the host organisation for purposes connected with its publicly funded or educational remit, Janet Policies allow the host organisation to provide them with access to Janet should it choose to do so.
Anonymous
Background
Anonymous
What Overlapping Channel Problem? In the UK, the area of the wireless spectrum set aside for the use of 802.11b/g wireless networking devices is the ISM (Industrial, Scientific and Medical) band between 2.400 GHz and 2.497 GHz. In the UK this is subdivided into 13 channels of 25 MHz. In the US, only the first 11 of these channels are available – a fact with implications for UK deployments (see ‘WAG’s Advice’ below).
Anonymous
Mark O’Leary July 2005
Anonymous
Wireless LAN Basics 1. Cisco® paper on allocating channels without overlaps: http://www.cisco.com/en/US/products/hw/wireless/ps430/ 2. Intel table of attenuation effects of different materials: http://www.intel.com/business/bss/infrastructure/wireless/deployment/considerations.htm
Anonymous
Surveying should be used at three different stages in the deployment of a wireless network.
Anonymous
The basic tools for performing a wireless network survey are therefore a device that can measure signal and noise levels and calculate the signal/noise ratio, and a map of the area to record these values.
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