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Protocol Analyzers
Used Gear
Web Servers
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What's What
Depending on your Web server and operating system, a software load balancer may require additional investments. If you run Apache on Linux but want to use Microsoft's Network Load Balancing, you'll need an additional server and OS on your shopping list. If you want to stick with a Microsoft-only infrastructure, Windows Advanced Server comes with Microsoft's Network Load Balancing product. It lists for $3,999.
Apache's mod_backhand module can provide load balancing, but you need to be intimate with Apache's and the module's directives, which is a bit daunting. The mod_rewrite module is popular as a catch-all tool, but if you aren't experienced with it, the price you pay is the long learning curve. Zeus Technologies' Extensible Traffic Manager is another option: Its list price of $7,500 and up is a bit pricey, but it offers capabilities similar to those of a hardware load balancer.
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