Wireless networks are very common, both for organizations and individuals. Many laptop computers have wireless cards pre-installed for the buyer. The ability to enter a network while mobile has great benefits. However, wireless networking has many security issues. Crackers have found wireless networks relatively easy to break into, and even use wireless technology to crack into non-wireless net...

This paper describes a methodology for designing interconnected LAN/MAN networks with the objective of minimizing the average network delay. We first consider IEEE 802 standard LAN’s interconnected by transparent bridges. These bridges are required to form a spanning tree topology. We propose a simulated annealing-based algorithm for designing minimum delay spanning tree topologies. In order to...

A campus-wide wireless LAN has been implemented that combines the scalability of virtual LANs and the flexibility of switched Ethernet with the mobility of wireless LAN access. A suite of general-purpose software tools has been developed and deployed to monitor the status of the network, measure the bandwidth utilization, control access to the network, and authenticate users.

Unlike typical office buildings, most retail environments aren’t wired for universal network access. Therefore, existing LAN connections usually dictate where retailers can place intelligent systems such as point of sale (POS), kiosks, security cameras and digital signage. When a system move requires dropping a new LAN line, there are two common hurdles: an onerous approval process (IT and Faci...

Le Réseau Numérique à Intégration de Services Large Bande (RNIS-LB), basé sur la Technique Temporelle Asynchrone (ATM: Asynchronous Transfer Mode en anglais), attire de plus en plus importantes du fait du support des applications très variés qu'il fournit. Les Réseaux Locaux (LAN: Local Area Network) et les Réseaux Métropolitains (MAN: Metropolitan Area Network), connectés au RNIS-LB, seront au...

PURPOSE Our aim was to examine whether active Ras and MycN cooperation contributes to the malignant phenotype of human neuroblastoma with amplified MycN gene, an aggressive incurable tumor. EXPERIMENTAL DESIGN Human neuroblastoma LAN-1 cells, in which the MycN gene is amplified, were used to examine the impact of the Ras inhibitor farnesylthiosalicylic acid on cell growth, on the levels Ras a...

Q: What is a Wireless LAN (WLAN)? Q: What are the benefits of using a WLAN instead of a wired network connection? Q: Are Intel WLAN products interoperable with other product brands? Q: What is Wi-Fi*? Q: What is IEEE 802.11b, 802.11g, and 802.11a? Q: What is the transmission range of WLAN products? Q: What data rates are available with a WLAN network connection? Q: What is an Access Point? Q: W...

Digital Enhanced Cordless Telecommunications(DECT) can carry both voice and data. The DECTLAN project at Centre for Wireless Communications (CWC) aims to develop a wireless LAN system based on the DECT standard. In phase I, the DECTLAN system supports a single duplex DECT bearer and an effective data rate of 24 kbps with no mobility support. In phase II of the project, the system will support 6...

Particular WLAN pathologies experienced in realistic scenarios are hard to detect, due to the complex nature of the wireless medium. Prior work has employed sophisticated equipment, driver modifications, or even application-layer techniques, towards diagnosing such pathologies. The key novelty of our approach lies in the identification of metrics able to characterize the root causes of individu...

This paper presents a set of network protocols which provide for a voting service. The service is currently being implemented in the client-server architecture. The cryptographic technique combined with the basic voting protocol from Salomaa 19] is the method based on the multiple key ciphers introduced by Boyd 2]. Special protocols for registration of voters and issuing voting slips are develo...