EDITORS' CHOICEFrom the front pageNetwork World 200: How the biggest network companies measure upThis year's Network World 200 list shows an industry in robust health, but with changing dynamics. As the biggest companies keep bulking up, will they collapse under their own weight or blossom into fuller glory?Crunch time for Microsoft management planThree years into a projected 10-year effort to create a self-healing management platform for Windows, it's time for Microsoft to stop talking and start producing, analysts and partners say.Securing UC Berkeley's networkClifford Frost, director of UC Berkeley's Communications and Network Services, on how IT has evolved, getting ahead of security challenges, handling security breaches and more.In depthWAN emulators ease application testsExtensive testing of applications and equipment is therefore critical to ensure acceptable performance under all network conditions. Fortunately, products known as WAN emulators make it easy for developers and IT managers to test in a lab environment under a wide range of conditions by emulating WAN links on a local network.How toChoosing the right OS for a database serverRon Nutter helps a user with some basic criteria for his selection.SecurityJames Gaskin: "It's raining bad news for the security conscious all of a sudden. What is going on?"From the blogsMark Gibbs wonders how you ensure truth and accuracy on public collaboration sites. Paul McNamara ponders the uselessness of non-delivery e-mail messages. Keith Shaw takes a look at draft-N (i.e., 802-11n) wireless products. Jason Meserve recommends the Sony DSR-11 DVCAM Digital Videocassette Recorder.; ;More newsThe hard sell of the IP softphoneCorporate users are talking on IP softphone clients everywhere - or nowhere, depending on whom you talk to.Telecommuting security concerns growTelecommuting has become a way of life as more companies let employees work from home to do jobs that might otherwise be done on corporate premises. As a result, IT managers are adapting security policies to encompass home PCs.IT turning green: New regulations make hardware more environmentally friendlyAs IT buyers focus on finding the most energy-efficient and coolest-running data-center systems, another environmentally friendly trend is taking off in the industry: the requirement to build hardware free of toxic substances.Google points search at corporate applicationsGoogle last week demonstrated its interest in winning over business users with the introduction of features for its corporate search appliance that can crawl through data from business applications.Postini adds user message archiving to e-mail serviceMessaging security service provider Postini this week plans to augment its archiving offering with a feature that lets users store e-mail and instant-messaging communications somewhere other than on the company's servers.Heroix adds correlation, SLA monitoring to softwareHeroix this week is set to release an upgraded version of its application performance management software that the company says can help customers understand how IT events impact the performance of business applications.Advanced switch gear on tap at InteropSeveral Ethernet and application switch vendors plan to announce products at the Interop show next week that are intended to make high-speed network gear more affordable and help users boost application performance and securityManufacturers eye on-demand softwareManufacturers of all sizes are looking into hosted software for core supply-chain functions, such as demand planning and factory scheduling.Virtualization vendors take aim at desktopVMware this week will announce it has formed an industry group, the Virtual Desktop Infrastructure Alliance, with more than 20 other software, hardware and service providers. The alliance is aimed at building joint virtual desktop offerings.Marathon eyes a wider server marketMarathon Technology introduces EverRun HA, its third product since it emerged from bankruptcy protection and reinvented itself as a software company in 2004.Microsoft patch service dueMicrosoft plans to give customers a peek at the next version of its Windows Server Update Services software at the Microsoft Management Summit conference in San Diego this week.In brief: Verizon Business launches trouble-ticket dashboardVerizon Business last week launched a dashboard interface for its online trouble-ticket management system.Interop 2006 Show PlannerOur take on the most important sessions you should be watching for at the show.Softricity spotlights virtualized applicationsSoftricity is expected to release this week the latest version of SoftGrid, application virtualization software that is aimed at reducing the work associated with managing Windows PCs by turning desktop applications into virtual services that can be delivered over a network.Microsoft to push Sender ID, program at e-mail summitMicrosoft said last week it plans to promote adoption of the Sender ID e-mail specification and introduce a new program for helping customers protect the integrity of e-mail messages.But wait, there's moreOur This Week page will also link you to: VPLS slowly pushing out legacy networks; Marshal sets up spyware protection; Vendors advance WLAN mesh networks; Rootkits aren't doom - but keep up defenses; Start-up's software classifies all data types; New BellSouth service delivers encrypted e-mail; Start-up takes aim at 'zombie' PCs; CA offers free database management tool; NetContinuum upgrades application firewall hardware, software.