Internet Information Server (IIS) or Internet Information Services
What Is IIS?
IIS is a web server application which is provided by Microsoft to run with its Windows Operating System. It is the most used server after the Apache HTTP Server. It is available for all the editions of Microsoft Windows Operating Systems but, doesn't comes installed beforehand. The latest stable release of IIS 7.5 supports HTTP, HTTPS, FTP, FTPS, SMTP and NNTP protocols. It is a type of Web server, mail server and FTP server.
Features of IIS:
- HTTP modules – Used to perform tasks specific to HTTP in the request-processing pipeline, such as responding to information and inquiries sent in client headers, returning HTTP errors, and redirecting requests.
- Security modules – Used to perform tasks related to security in the request-processing pipeline, such as specifying authentication schemes, performing URL authorization, and filtering requests.
- Content modules – Used to perform tasks related to content in the request-processing pipeline, such as processing requests for static files, returning a default page when a client does not specify a resource in a request, and listing the contents of a directory.
- Compression modules – Used to perform tasks related to compression in the request-processing pipeline, such as compressing responses, applying Gzip compression transfer coding to responses, and performing pre-compression of static content.
- Caching modules – Used to perform tasks related to caching in the request-processing pipeline, such as storing processed information in memory on the server and using cached content in subsequent requests for the same resource.
- Logging and Diagnostics modules – Used to perform tasks related to logging and diagnostics in the request-processing pipeline, such as passing information and processing status to HTTP.sys for logging, reporting events, and tracking requests currently executing in worker processes.
- Besides these features the IIS 7.5 includes various other features such as:
- Client Certificate Mapping
- IP Security
- Request Filtering
- URL Authorization
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