Exchange & Outlook UPDATE, Exchange Edition--Watching the Watchers--April 12, 2007

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IN THIS ISSUE
*Commentary: Watching the Watchers
*Windows IT Pro 2007 Community Choice Awards!
*Exchanging Ideas: Windows Connections and Microsoft Exchange Connections
*New and Improved: SIP Connectivity with Exchange 2007 UM

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***COMMENTARY: Watching the Watchers
by Paul Robichaux, Exchange Editor, [email protected]

Even if your Latin skills are weak, you might recognize a few well-known phrases such as ipso facto and quod erat demonstrandum (Q.E.D.). Another key phrase you might know is quis custodiet ipsos custodes? It means something close to "who watches the watchers?" That's a question that might be on your mind even if you don't recognize it in the original Latin. Who watches your watchers? Who monitors the activities of your users and administrators, and who watches the ones doing the monitoring?

I thought about this recently when I read a Wall Street Journal article about Bruce Gabbard, a former security engineer for Wal-Mart ("Wal-Mart's Firing Of a Security Aide Bites the Firm Back," April 9, 2007). Gabbard was responsible for counter-surveillance and had nearly unlimited access to some of Wal-Mart's most sensitive data, and now Wal-Mart is suing him because the company thinks he's misappropriated some of that information. The suit raises some interesting questions about whether Wal-Mart knew the full extent of Gabbard's access. The matter will undoubtedly work its way through the courts with a lot of sound and fury; no matter how it's resolved, the case gives cause for thinking about similar issues in your own organization.

Administrators, of course, have a broad array of privileges. However, Exchange Server administrators don't have to have administrator privileges to Windows and Active Directory (AD), and vice versa. Specific Exchange tasks, such as installing service packs or adding or removing Exchange servers, do require Windows administrative privileges. In addition, user management tasks, such as adding or removing user accounts or distribution groups, require AD permissions.

Exchange and Windows allow delegation of administration so that you can delegate access rights for specific operations to only the groups that should have them. Here's a security tip: Don't assign delegated permissions to individual users. Instead, assign them to groups and put users in the groups. This method reduces the risk that you'll end up with orphaned permissions on an object or that you'll forget to remove an account when the user no longer needs access.

One of the most common questions related to administrator access is how you can tell if administrators are reading other people's mail when they shouldn't be. This is a tough nut to crack because if you look at the event log you'll see that Exchange logs an event ID 1016 whenever one user attempts to access another user's mailbox. Sounds good—except that the event is logged for legitimate access, too, not just failed attempts. You can check the mailbox databases and mailboxes to see whether administrators have Send As and Receive As privileges on mailboxes they don't own, but that's not a complete solution either; administrators can always grant the permission, read the mail, then remove the permission—making it much more difficult to catch.

I once taught a security workshop for Microsoft field engineers. We had a lively discussion about what the ultimate defense is against an untrustworthy administrator. We discussed various security measures, but for everything I proposed, the engineers came up with a clever workaround. Finally I described the ultimate security measure: Get the sheriff to arrest the evildoer after you catch him. But this method sounds fairly unsatisfying. After all, you like to think of security measures as proactive steps that will either block attackers from succeeding or help you catch them in the act. However, it's a time-tested rule of computer security that administrators can do anything they want; having that level of access is what makes an administrator.

The bottom line: Hire trustworthy administrators, and if you have reason to think that someone is no longer trustworthy, consider removing that person's administrator access.

Editor's Note: TechX Interoperability Web Site and UPDATE Email Newsletter:
Do you work in a mixed environment? Visit TechX World for information about Windows interoperability. The TechX World community gives you access to interoperability articles that aren't available anywhere else; news, tips, and tricks from interop experts and other users; and forums and blog posts by other community members.

Join the TechX World community and sign up for the TechX Interoperability UPDATE email newsletter.

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***Windows IT Pro 2007 Community Choice Awards!

We Need Your Help Picking the Best Products
Vote for your favorite products from the Buyer's Guides we published in Windows IT Pro over the past 12 months. The first six categories are now open for voting on the Windows IT Pro forums, but only for a limited time. To see the list of products in each category and place your vote, follow the links below.

The following categories are now open for voting: Host-Based Intrusion Prevention Systems
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=42&threadid=84647

KVM over IP Switches
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=47&threadid=84644

Ultra-Portable Laptops
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=47&threadid=84643

iSCSI Storage Arrays
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=46&threadid=84901&enterthread=y

UPS Products
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=47&threadid=84903

Two-Factor Authentication Products
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=42&threadid=84902

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***EXCHANGING IDEAS

Focus: Windows Connections and Microsoft Exchange Connections

Technical IT conferences provide an opportunity to connect with contributing editors, readers, and the Windows IT vendor community
Windows IT Pro executive editor Amy Eisenberg shares her thoughts on the spring 2007 Connections conference in Orlando, Florida. Included is Tony Redmond's report card on Exchange Server 2007.
http://www.windowsitpro.com/Articles/ArticleID/95752/95752.html

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Tell Us About the Products You Love!
What products are you using that save you time or make your workload a little lighter? What hot product discoveries have you made that other IT pros need to know about? Let the world know about your experiences in Windows IT Pro's monthly What's Hot department. If we publish your story in What's Hot, we'll send you a Best Buy gift card! Send information about your favorite product and how it has helped you to [email protected]

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Have a question? Got answers? Join your peers in the Exchange discussion forums:
http://forums.windowsitpro.com/web/forum/categories.aspx?catid=40&entercat=y

Here are some current threads that your colleagues hope you can help answer:

Deleted Items cleanup policy
Outlook clients in cached mode still see old items in the folder, even though the folder appears cleaned up through OWA.
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=40&threadid=85013&enterthread=y

Edge Transport Anti-Spam - any good?
Just wondering if folk think there is now no need for a 3rd party service?
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=40&threadid=85007&enterthread=y

Reporting Tools
Does anyone know of any Exchange tools that will give statistics of user mail, public mail, etc.?
http://forums.windowsitpro.com/web/forum/messageview.aspx?catid=40&threadid=84988&enterthread=y

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Don't forget to sound off in our Instant Poll. This month's question is "Is managing Exchange getting too complicated for your IT staff?"
http://www.windowsitpro.com/MicrosoftExchangeOutlook/Index.cfm

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***NEW AND IMPROVED
by Blake Eno, [email protected]

SIP Connectivity with Exchange 2007 UM
pbxnsip, a provider of Session Initiation Protocol (SIP)-based IP-PBX software, announced that they have successfully demonstrated direct SIP connection with the Exchange 2007 Unified Messaging (UM) platform. pbxnsip provides the ability to interface with Exchange without the need for gateways, giving you a SIP solution that lowers the cost of ownership and management between your PBX and email platform. To learn more about pbxnsip, visit them on the Web or call 978-746-2777.
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***EVENTS AND RESOURCES

These Windows-related events, papers, and resources will help you keep your knowledge and skills up to date and help you deploy, secure, and maintain the latest Exchange- and Windows-related technologies. For more Exchange related resources, visit
http://www.windowsitpro.com/go/exchangeresources

Windows + UNIX/Linux = You Need TechX World!
If you work in an environment that includes both Windows and UNIX or Linux, TechX World is the place to go for practical strategies and resources to add to your toolkit. This one-day technical training event will teach you how to make the most of open-source tools on Windows and how to manage and sync multiple directories. Register today!
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Get Ready for the Windows Server Longhorn Roadshow!
Seize control of your Windows infrastructure with Microsoft's biggest server release since Windows 2003. Get a live, under-the-hood look at Longhorn virtualization, deployment, Web services, and breakthroughs in core reliability. This one-day event is filled with demonstrations and in-depth discussions designed for IT pros who want a deep understanding of Windows Server Longhorn.
http://www.windowsitpro.com/roadshows/longhorn/?code=epromo

Deploy Exchange Server 2007 Without a Hitch!
This one-day technical training event teaches you how to preempt pitfalls and avoid corrupting your email infrastructure. Learn how to effectively install, manage, and secure Exchange Server 2007 in a 64-bit environment. You'll also get a peek into the integration of Outlook, SharePoint Server 2007, and Exchange Server 2007. Register today!
http://www.windowsitpro.com/roadshows/exchange2007usa/?code=epromo

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