วันอังคารที่ 23 กุมภาพันธ์ พ.ศ. 2553

Inexpensive Radius Server provides security in wireless networks

Many small businesses have actually done as a combination of computers and other devices, their corporate network via wireless (WiFi) connections, and a few brave. Many of these early networks required, wireless devices carefully placed in the building so that the wireless signal reached all recipients. In general, these networks fail to offer sufficient guarantees as vulnerable to theft and resources from the leftunauthorized access to protect. Both problems are now largely resolved, so that may seem to provide time for small businesses in the more potential benefits of a wireless network.

Wireless Networking Basics

Construction of a wireless network requires two different types of hardware, access points and wireless cards for wireless access. Wireless Access Point is a device that is connected to an existing network computervia a standard Ethernet cable. E 'equipped with an antenna on him, he and signals transmitted from the PC and other devices can be received. Each device to communicate with the Access Point is a wireless network card, which also includes an antenna. The current WLAN standard called 802.11g, it can be transmitted up to 54 megabits of data per second between the desired access point and card access. Although not as fast as wired networks, which generally run100 megabits to 1000 megabits per second, wireless networks offer greater flexibility and less expensive to install. This is particularly true for older buildings where installing cable can be too expensive.

Cutting Corners

Wireless networks because it uses radio frequencies to transmit information and, therefore, are likely to be blocked by walls and other obstacles in a building. These obstacles can a "dead spots" where radio waves areable to reach their recipients. Microwave ovens and other RF emitting devices can also wreak havoc on wireless signals. The solution is strategic to wireless access points throughout the area of construction, so as to minimize interference. If the distance from a wireless access point for the mobile device more than a few tens of meters, wireless repeaters can be installed to amplify the signal. This repeater can alsoplaced so that the wireless signals from all corners of the building can be accessible.

Wireless Home Network Security Solved

Installing a simple wireless network is fairly simple, but installing a secure wireless network can be much more difficult. However, an Ann Arbor company called Interlink Networks is now offering its products LucidLink, global security on wireless network installation, makes it a breeze.LucidLink first were available, an organization want to lock their wireless network should expensive network security consultants to install and administer rent to the party's wireless network. LucidLink packages all the know-how in a software add-ons, that is so easy that even a small company, the office manager can easily take control of who access the corporate network via wireless. It goes beyond the simple addressAuthentication (standard on most wireless routers), and produces what is called a RADIUS server. RADIUS servers are what large corporations spend thousands of dollars in installation and maintenance to ensure their large (1000 + nodes) wireless networks. Until now, installing a RADIUS server is the price for everybody, but larger companies. In contrast, LucidLink product can be purchased for just $ 99 for a 3-User Home Office Edition, $ 449 for a 10The version for the user, and goes up to $ 3995 for a version of 250 users.

Abstract

Although there are still problems with the guarantee covering all areas of a building, the current standard WiFi (802.11g) is a strong signal, which means less weight should be based on positions of the connected devices are provided. However, it is advisable that a professional office site to verify that all necessary areas of the building can be reached by radio signal. Meanwhile,Interlink Networks has finally solved the problem of security at a price that is affordable for small and medium enterprises.

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