What is time-taken in IIS log?
time-taken measures the time it takes for IIS to process a request and send the last byte to the client in milliseconds. 1. It includes the entire process from IIS starting the process of processing the request to the end of the response to the sending of the last byte. 2. It contains the application pool idle waiting time and ASP.NET or other server-side processing time. 3. It does not include client rendering time and network delay. 4. Can be used to identify performance bottlenecks, such as slow query, deadlock, high load, etc. 5. Performance problems can be effectively analyzed by filtering high values, grouping by URL, comparing time ranges, and using averages and percentiles.
Jul 23, 2025 am 12:38 AM
How to import IIS logs into Excel?
Yes,youcanimportIISlogsintoExcelbyusingtheTextImportWizard,preparingthelogfilefirst,orusingPowerQueryforbettercontrol.First,usetheTextImportWizardbyopeningExcel,goingtoData→GetData→FromText/CSV,selectingthelogfile,settingthecorrectdelimiter(spaceorta
Jul 22, 2025 am 01:11 AM
Configuring Site Bindings with Specific IP Addresses, Ports, and Host Headers in IIS
To configure binding in IIS to respond to specific IP, port, and host header requests, site binding needs to be set manually. The steps to add binding based on IP and port are: Open IIS Manager → Select Site → Click "Binding" → Add → Select IP → Fill in the port → Leave a blank host name. To configure binding with host headers, you need to fill in different domain names under the same IP and port to support multiple sites. Notes include: HTTPS recommends allocating independent IP or enabling SNI, checking binding order, ensuring firewall release, verifying local access, etc. Common problems such as "all unassigned" bindings to other sites, DNS resolution errors, certificate mismatch, etc., which may cause access failure and should be checked one by one.
Jul 22, 2025 am 12:41 AM
Diagnosing Memory Leaks Within IIS Application Pools
Memory leaks are usually caused by inappropriate event handlers and static references, checking and canceling unnecessary subscriptions to avoid storing large objects in static classes. Use weak references to allow garbage collection. Monitor Windows performance counters such as private bytes, .NETCLR memory, and available memory, capture memory snapshots to analyze object retention. Configure periodic recycling of IIS application pools, set memory-limited recycling policies, and enable overlapping recycling to reduce downtime. Review long-running requests or background threads, make sure the task is cleaned correctly after completion, terminate the operation with a cancel token, and check for known leaks in the third-party library.
Jul 22, 2025 am 12:34 AM
How to configure IIS log rollover by size?
IIS can automatically split logs by file size through registry configuration. 1. Enter the "Log" setting in the IIS manager, check "Enablelogrolloverbasedonfilesize", and uncheck "Schedule". 2. Modify the registry path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters, add or modify the MaxFileSizeDWORD value (unit bytes), such as 100MB is 104857600. 3. Restart the IIS effective settings and pay attention to setting the file size reasonably to balance performance and management
Jul 22, 2025 am 12:18 AM
Securing IIS Using the Request Filtering Module
The IISRequestFiltering module can improve website security by configuring blacklist extensions, limiting URLs and querying string lengths, and prohibiting hiding HTTP. The specific steps are: 1. Add extensions such as .php and set to reject to prevent upload vulnerabilities in the "File Extension" tab; 2. Set the URL not more than 2KB and the query string not more than 1024 bytes in the "Request Limit" to prevent abnormal requests; 3. Deny non-essential methods such as PUT, DELETE, TRACE and other methods in the "HTTP Method" tab to reduce the attack surface. These settings are simple and effective, and are suitable for strengthening IIS security protection.
Jul 21, 2025 am 02:22 AM
What does a 200 0 64 status in IIS logs mean?
The 200064 status code indicates that the request is successful and there is no system error, but the data transmission volume is small. The specific explanation is as follows: 1.200 means that the HTTP request is successfully processed; 2.0 means that no Windows-level error occurred; 3.64 means that the server sent 64 bytes of data, usually the response header information. Commonly used in HEAD requests, small static file access, crawler detection, or page redirection. If this status code frequently appears in the log, it may indicate that there are a large number of small requests, scanning behaviors, or redirecting pages. There is usually no need to worry, but if the source is abnormal or the number of requests suddenly increases, it is recommended to further check whether there are security risks or optimization needs.
Jul 21, 2025 am 01:25 AM
Setting Up Multiple Websites Using Host Headers on a Single IIS Server
TorunmultiplewebsitesonasingleIISserverwithoutseparateIPaddresses,usehostheaders.1.AssignallsitesthesameIPandport(like80or443)inIISbindings.2.SetuniquehostheadersforeachsiteviatheBindingsmenu.3.EnsureDNSArecordspointeachdomaintotheserver'ssharedIP.Co
Jul 21, 2025 am 12:45 AM
What is the difference between IIS logging and Enhanced Logging?
ThemaindifferencebetweenstandardIISloggingandEnhancedLoggingisthatstandardIISloggingcapturesbasicrequest-leveldatalikeIPaddress,timestamp,URL,HTTPstatuscode,anduseragentbydefault,whileEnhancedLoggingoffersgreaterflexibility,allowingloggingofcustomhea
Jul 21, 2025 am 12:36 AM
Understanding the IIS Request Processing Pipeline Stages
The IIS request processing process is divided into five main stages, each of which affects the performance and functions of the web application. 1. Receive requests and basic verification: IIS listens to ports and recognizes protocols, performs basic verification such as SSL/TLS handshake and IP restrictions. Common problems include firewall interception or certificate errors; 2. Authentication and authorization: Supports multiple authentication methods and access control based on users or roles. 401 or 403 errors usually originate from improper configuration at this stage; 3. Request processing module intervention: multiple modules handle requests in sequence in integrated pipeline mode, such as URL rewriting, logging, content compression and output cache. Custom modules can be inserted into logic but may affect performance; 4. Processor mapping and execution: Processor generation based on extension or path matching
Jul 20, 2025 am 02:58 AM
IIS logging on Azure App Service
To enable IIS logging on AzureAppService, 1. Enter the AppService resource, 2. Find the "AppServicelogs" menu, 3. Select "FileSystem" or "BlobStorage" in the "IISlogs" section. It is recommended to select BlobStorage when retention for a long time; IIS logs record client IP, user agent, request method, URL, status code, processing time, data volume and other information by default; viewing methods include Kudu console, downloading Blob or using the LogStream tool of the portal, among which Blob storage is more suitable for long-term retention.
Jul 20, 2025 am 02:56 AM
What is the meaning of the cs-version field in IIS logs?
Thecs-versionfieldinIISlogsindicatestheHTTPprotocolversionusedbytheclientwhenmakingarequesttotheserver.1.CommonvaluesincludeHTTP/1.0,HTTP/1.1,andHTTP/2,withHTTP/1.1andHTTP/2beingmostprevalenttoday.2.Ahyphen(-)signifiesmissingorunspecifiedversiondatad
Jul 20, 2025 am 02:25 AM
What does sc-status 500 in IIS logs mean?
A500statuscodeinIISlogsindicatesaninternalservererror,meaningsomethingwentwrongduringrequestprocessing.Commoncausesincludeapplicationcrashes,badconfiguration,permissionissues,missingdependencies,orscripterrors.Todiagnose,checkthefullloglineforURLdeta
Jul 20, 2025 am 12:23 AM
How to filter IIS logs by date and time?
To quickly filter specific time period content in large volume IIS logs, you can use the following three methods: 1. Use the PowerShell command line tool to accurately filter the specified time period logs through Get-Content and Where-Object; 2. Use the LogParserStudio graphical tool to use the SQL query statement SELECT*FROM'[LOGFILEPATH]'WHERETO_TIMESTAMP(date, time)BETWEEN'start time'AND'end time'; 3. Use the Notepad advanced text editor to match and mark the target time range content through regular expressions for extraction. These three
Jul 19, 2025 am 02:38 AM
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