Standards for Wireless Networks

The use of wireless data networks at the University is growing as technologies improve and prices drop. However, those units planning installation of wireless networking technology should be aware of the following issues;

1. Wireless networks are not a complete replacement for wired switched networks.
   
   
2. Unlike wired switched networks, wireless networks are a shared medium and as a result performance decreases as more clients use the same central resource. Performance also decreases as the distance to the nearest base station increases. In most cases performance will not equal that of a wired switched network.
   
   
3. The wireless transmission of data from the desk top or laptop to the nearest base station connected to the building backbone network is, by definition, insecure since it uses radio and may be intercepted unless precautions are taken.

Installation of a wireless network requires careful physical planning and a site survey to optimize placement of base stations in any particular area in order to maximize performance. It is also important to estimate how many base stations will be required for current projected usage and to allow for growth. Finally, current wireless networks operate in the same frequency range as other consumer and scientific devices, and are therefore susceptible to interference. A site survey will help identify potential sources of problems.

Wireless networks out of the box do not have any security features turned on. All wireless network products do support some kind of encryption using a standard called WEP. However, this is weak security and should only be used in situations where security is not a major issue. Details on current security standards are available from IST.

Any use of wireless networks for secure applications in administration, teaching or research will need further facilities to bring the level of security up to that of wired switched networks. This will require additions to the central backbone network equipment to ensure that the installation meets required security levels.

Any units planning installation of wireless networks are asked to contact IST for assistance in planning and in ensuring proper security measures are taken to protect the integrity of University data and systems. IST will be pleased to assist in planning for proper security measures.