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01 - 02 - 03 - 04 - 05 - 06 - 07 - 08 - 09 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - Key Distribution Center The KDC is integral to the operation of Kerberos, and Windows 2000 implements the KDC as a domain service, as shown in Figure 3.7. The KDC uses Active Directory as the source of its account database (see Chapter 4). The KDC service, along with the Active Directory, is located on every Windows 2000 domain controller. This allows each domain controller to accept authentication and ticket requests instead of depending on a single KDC. Figure 3.7 Kerberos Key Distribution Center runs as a service on Windows 2000 domain controllers. Every Kerberos KDC has its own principal name. The name used in Windows 2000 is krbtgt, which follows the guideline given in RFC 1510. When a Windows 2000 domain is created, a user account named krbtgt is created for the KDC principal, as shown in Figure 3.8. This account is a built-in account, so it cannot be deleted, renamed, or enabled for normal user use. Even though it appears that the account is disabled, in reality it is being used by the KDC. An administrator who attempts to enable the account receives the dialog box shown in Figure 3.9. The password for the account is generated automatically by Windows 2000 and is changed automatically by the system on a regular basis. The key used by the krbtgt account is based on its password, just like a normal user’s long-term key. The long-term key of krbtgt is used to encrypt and decrypt the TGTs it gives out. The krbtgt account is used by all KDCs in a domain. For example, a Windows 2000 domain may have five domain controllers, each of which has its own functioning KDC, but each of the KDCs uses the krbtgt account. This allows each KDC to encrypt and decrypt TGTs using the same long-term key. A client knows which KDC to communicate with because client computer queries the Domain Name System (DNS) for a domain controller. After the client locates a domain controller, it sends the KRB_AS_REQ message to the KDC service on that domain controller. 01 - 02 - 03 - 04 - 05 - 06 - 07 - 08 - 09 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - |
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Serving the Philadelphia area with the best in tech service and support.
-Consumer Reports: Apple Still Tops in Computer Tech Support (PC World)
I have the greatest respect for the men and women behind Apple's tech support. Despite having one of the toughest jobs in the industry they've always been...
-Tech Support Rating: Apple Dell Lenovo Top List (Tom's Hardware)
Consumer Reports surveyed over 7000 of its readers and declared its list of companies that provided the overall most satisfactory tech support for laptop and desktop computers. Apple - Dell - Desktop computer - Companies - Product Support
-Consumer Reports: Apple still tops in computer tech support (Macworld.com via Yahoo! News)
I have the greatest respect for the men and women behind Apple's tech support. Despite having one of the toughest jobs in the industry they've always been extremely efficient and courteous in solving my own problems.
-Consumer Reports Says Apple Has The Best Tech Support Acer/Gateway/eMachines The Worst (TechCrunch)
Consumer Reports has a new report on which computer company has the best tech support. Apple wins! That's what happens when the same company controls the hardware as well as the operating system (and several of the most prominent pieces of software). The highest ranking PC manufacturer is Dell for desktops and Lenovo for laptops.
-Apple tops Consumer Reports' tech support survey (CNET)
Apple hit a home run in Consumer Reports' recent tech support survey taking the top spot in laptops and desktops.
-Apple ranks first in tech-support ratings (MacUser)
In Consumer Reports' latest survey of computer tech support Apple has come out far ahead of their competition for their support of laptop and desktop computers.
-No. 1 Kansas tops Texas Tech is third team to reach 2000 wins (USA Today)
Cole Aldrich had 12 points and 18 rebounds and No. 1 Kansas become the third team to reach 2000 wins by pulling out an 80-68 victory over scrappy Texas Tech on Thursday in the quarterfinals of the Big 12 tournament.
-No. 1 KU tops Texas Tech 80-68 to reach 2000 wins (AP via Yahoo! Sports)
Kansas reached a major milestone one just two other programs can claim. A nice accomplishment worthy of the trophy case. There just isn't time for the Jayhawks to enjoy it. Not after struggling against Texas Tech not with more important goals still out there. Leaning on stars Cole Aldrich and Sherron Collins No.
-Big 12: Kansas pulls away late beats Texas Tech (Sports Illustrated)
Texas Tech vs. Kansas recap from game played on March 11 2010
-Man Infra eyes foreign partners for tech support (Business Standard India)
Man Infraconstruction is scouting for foreign partners for technical support and to build its equipment base a top company official today said.
Updated 124 minutes ago.
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