MCSE Proxy Server 2 Exam Cramby David Johnson, Andy Ruth (Other), Ed Tittel, J. Michael Stewart (Joint Author)
Includes sections on proven test-taking strategies, warnings on trick questions, time-saving study tips, multiple-part question strategies, and shortcuts. Includes practice exam questions arranged in a similar format to the ones found on the actual exam. Provides all of the necessary overviews, concepts, and Microsoft networking terminology to help potential test takers get up to speed as quickly as possible. Written by a team of leading trainers and certification experts. Jam packed with test-taking tips and strategies as well as numerous technical insights on topics such as Internet protocols, Windows sockets, Secure Sockets Layer (SSL), user authentication techniques, Remote Access Server, server caching, and Proxy Server customization and tuning.
Serves as the perfect complement to all study guides and training materials for Exam #70-088:Implementing and Supporting Proxy Server 2. Includes resource sections at the end of each chapter to help the reader make use of the best study aids available. Provides a special Cram Sheet with tips, acronyms, and memory joggers for a quick review just prior to taking the exam. Guarantees long shelf life because tests for future versions are not made available until roughly 90-120 days after the release of the software.
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Chapter 9: Troubleshooting
Event MessagesWeb Proxy has three different types of event messages: service even messages, cache even messages, and array and chain event messages. These messages and a brief description of each are covered in the following sections.
Web Proxy Service Event Messages
The Web Proxy service event messages (including arrays and chains) appear in the system event log with the WebProxyServer and WebProxyLog source names.
The Web Proxy service logs in the following event messages:
- HTTP/1.0 500 server error (an attempt has been made to operate on an impersonation token by a thread that is not currently impersonating a client).
- HTTP/1.0 500 server error (-number).
- HTTP/1.0 500 server error (the specified module could not be found).
- 115W3Proxy failed to start because the Microsoft Proxy Server RC program expired on date. Please contact Microsoft about this product.
- 118The Web Proxy service was halted. The 60-day free evaluation period has expired.
- 125The Web Proxy service received number requests from the Internet port during the past number seconds while Internet publishing was disabled.
- 126The Web Proxy service configuration has been modified number time(s) during the past number seconds.
- 129The Web Proxy service is continued.
The Web Proxy service cache even messages appear in the system event log with the WebProxyCache source name.
If caching does not occur, make sure there's sufficient disk spaceavailable on the cache drive.
The Web Proxy service logs the following cache event messages:
- 111Web Proxy cache initialization failed due to an incorrect configuration. Please use the administration utility or manually edit the Registry to correct the error and restart the service.
- 112Web Proxy cache corrected a corrupted or old format URL cache by removing all or part of the cache's contents.
- 113Web Proxy cache failed to initialize the URL cache on disk.
- 114The hard disk used by the Web Proxy Server service to cache popular URLs is full. Space needs to be freed, or the Web Proxy cache needs to be reconfigured to resume normal operation.
The Proxy Server array and chain even messages appear in the system event log with the WebProxyServer and WebProxyLog source names. The Web Proxy service logs the following array and chain event messages:
- 130The Web Proxy service detected that the upstream proxy servername is down.
- 131The Web Proxy service detected that the upstream proxy servername is back up.
- 132The Web Proxy service detected that the array member servername is down.
- 133The Web Proxy service detected that the array member servername is back up.
- 139Proxy Server servername requires proxy-to-proxy authentication. Proxy Server servername is not configured with this type of authentication.
Web Proxy has four different types of values: service, service MIB, service cache, and service publishing values. These values are covered in the following sections.
Web Proxy Service Values
The Web Proxy service Registry keys are located in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Proxy\Parameters.
Web Proxy Service MIB Values
The path to the dynamic link library (DLL) for the Web Proxy service Management Information Base (MIB) is located in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\W3Proxy\CurrentVersion.
- Note: The MIB is a set of objects that can be used by the Simple Network Management Protocol (SNMP) to manage Proxy Server. SNMP works by sending messages, called Protocol Data Units (PDUs), to the proxy server. The server than returns a list of its manageable objects to the SNMP requesters.
The three important Registry keys are the cache parameters, the cache path, and the cache filters. The cache parameter keys are located in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Pcache\Parameters.
The cache path keys are located in HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\W3Pcache\UrlData.
Web Proxy Service Publishing Values
The parameters that define the reverse proxy (publishing) values of the Web Proxy service are located in HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\W3Proxy\Parameters\Reverse Proxy.
Mapping routes an incoming Internet request from the system identified in the request to another system located behind the proxy server. The Registry keys for mapping are located in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Proxy\Parameters\Reverse Proxy\Mapping...
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