Microsoft 的 ISAServer 替代产品 Forefront TMG 2010 提供了丰富的功能，包括网页过滤、反恶意软件、反病毒及 HTTPS 检查等。Celestix MSA3200i 是一款预装并准备运行的完整安全设备，为用户提供了更为便捷的选择。
The TMG reporting interface sees a modest redesign and the latest SP1 update brings in user activity reports so you can see what individuals have been up to and those that have used the rule override option. The reports can be very detailed and can be used to view traffic patterns, cache, protocol and application usage plus security alerts.
Basic real time monitoring is provided but we found it really annoying that no report on the current activity could be raised until the following day. TMG still uses the Dailysum utility from ISA Server which can only query the reporting database once a day.
Email security can begin once you’ve typed your Exchange servers and mail domains in to TMG and wizards are provided to create basic policies. This component snaps neatly into the TMG console and assigns SCL (spam confidence level) scores to suspect email.
Based on their SCL score, spam messages can be deleted, rejected or quarantined but no options are provided for tagging subjects and letting them through. TMG provides tough anti-virus measures as it uses scanning engines from Kaspersky, Authentium, Norman, VirusBuster and Microsoft.
Forefront TMG 2010 is a vast improvement over ISA Server as it provides a wealth of new features including web filtering, anti-malware, anti-virus and HTTPS inspection. Existing users of ISA Server would do well to upgrade but the change to a 64-bit operating system means they must do a clean install and migrate their settings to TMG.
The Celestix MSA 3200i looks a much more sensible choice as it has everything preinstalled and ready to run. It’s also unlikely you’d save much cash by doing it yourself as you’ll need to factor in TMG licensing costs plus the dedicated server hardware and underlying Server 2008 64-bit OS and, of course, your valuable time.
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