A NAC for security: In this day and age, you don't just want any ol' system connecting to your company's network; that innocent-looking device could be packing a fistful of wormy or viral unpleasantness. InfoWorld Analyst Steve Hultquist looks at a quartet of NAC (network access control) solutions, Enterasys Sentinel Trusted Access, McAfee Policy Enforcer, Symantec Network Access Control, and Trend Micro Network A NAC for security: In this day and age, you don’t just want any ol’ system connecting to your company’s network; that innocent-looking device could be packing a fistful of wormy or viral unpleasantness. InfoWorld Analyst Steve Hultquist looks at a quartet of NAC (network access control) solutions, Enterasys Sentinel Trusted Access, McAfee Policy Enforcer, Symantec Network Access Control, and Trend Micro Network VirusWall Enforcer, to determine which was best delivers policy-based NAC. We did find a winner — but all the vendors have work to do. Can Oracle do MySQL? Late last year, Oracle stirred up the IT industry with its offer of low-price support for Red Hat Enterprise Linux. This week, InfoWorld Open Enterprise Columnist Neil McCallister contemplates whether Oracle may be poised to develop its own branded version of popular open-source database MySQL — and more important, could the company compete.WLW woes: Martin Heller, InfoWorld’s Strategic Developers, decided to try out Microsoft’s Windows Live Writer (currently in beta) for blogging. Alas, the path from creating a blog entry to posting it via Movable Type (InfoWorld’s blog-publishing system of choice) proved rocky, to say the least — but at least there were lessons to be learned. Technology Industry