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Virtual hosting is a method that servers such as webservers use to host more than one domain name on the same computer, sometimes on the same IP address. Wikipedia does not have an article with this exact name. ...
To meet Wikipedias quality standards, this article or section may require cleanup. ...
In information technology, a server is a computer system that provides services to other computing systems—called clients—over a network. ...
The term web server can mean one of two things: a computer responsible for serving web pages, mostly HTML documents, via the HTTP protocol to clients, mostly web browsers; a software program that is working as a daemon serving web documents. ...
The term domain name has multiple meanings, all related to the: a name that is entered into a computer (e. ...
An IP address (Internet Protocol address) is a unique number that devices use in order to identify and communicate with each other on a computer network utilizing the Internet Protocol standard (IP). ...
There are two basic methods of accomplishing virtual hosting: name-based, and IP address or ip-based. An IP address (Internet Protocol address) is a unique number that devices use in order to identify and communicate with each other on a computer network utilizing the Internet Protocol standard (IP). ...
Name based
Name based virtual hosts use multiple host names for the same webserver IP address. An IP address (Internet Protocol address) is a unique number that devices use in order to identify and communicate with each other on a computer network utilizing the Internet Protocol standard (IP). ...
With web browsers that support HTTP/1.1 (as most do), upon connecting to a webserver, the browsers send the address that the user typed into their browser's address bar (the URL). The server can use this information to determine which web site, as well as page, to show the user. The browser specifies the address by setting the Host HTTP header with the host specified by the user. The Host header is required in all HTTP/1.1 requests. HTTP (for HyperText Transfer Protocol) is the primary method used to convey information on the World Wide Web. ...
A Uniform Resource Locator, URL (spelled out as an acronym, not pronounced as earl), or Web address, is a standardized address name layout for resources (such as documents or images) on the Internet (or elsewhere). ...
For instance, a server could be receiving requests for two domains, www.site1.com and www.site2.com, both of which resolve to the same IP address. For www.site1.com, the server would send the HTML file file from the directory /www/JoeUser/site1/, while requests for www.site2.com would make the server serve pages from /www/FrankUser/site2/. The domain name system (DNS) stores and associates many types of information with domain names, but most importantly, it translates domain names (computer hostnames) to IP addresses. ...
An example of HTML code with syntax highlighting and line numbers In computing, HyperText Markup Language (HTML) is a predominant markup language for the creation of web pages. ...
Cons If the Domain Name System (DNS) is not properly functioning, it becomes much harder to access a virtually-hosted website. Ordinarily, in this case, the user could try and fall back to using the IP address to contact the system, as in http://12.34.56.78/. However, the web browser doesn't know what hostname to send when this happens, so the server will respond with a default website—often not the site the user expects. This workaround is not really useful for an average web user, but may be of some use to a site administrator while fixing DNS records.
A workaround in this case is to add the IP address and hostname to the client system's hosts file. At this point, accessing the server with the domain name should work again. However, users should be careful when doing this, as any changes to the true mapping between hostname and IP address will be overridden by the local setting. In computing, a hosts file, stored on the computers filesystem, is used to look up the Internet Protocol address of a device connected to a computer network, such as your home computer connected to the Internet. ...
Another issue with virtual hosting is the inability to host multiple secure websites running Secure Sockets Layer or SSL. Because the SSL handshake takes place before the expected hostname is sent to the server, the server doesn't know which encryption key to use when the connection is made. One workaround is to run multiple web server programs, each listening to a different incoming port, which still allows the system to just use a single IP address. Another option is to do IP aliasing, where a single computer listens on more than one IP address. Secure Sockets Layer (SSL) and Transport Layer Security (TLS), its successor, are cryptographic protocols which provide secure communications on the Internet. ...
In telecommunication and microprocessor systems, the term handshaking has the following meanings: In data communications, a sequence of events governed by hardware or software, requiring mutual agreement of the state of the operational modes prior to information exchange. ...
It has been suggested that this article or section be merged into Computer port (software). ...
IP aliasing is the process of adding more than one IP address to a network interface. ...
IP address based In IP based virtual hosting, each site (either a dns hostname or a group of dns hostnames that act the same) points to a unique IP address. The webserver is configured with multiple physical network interfaces, virtual network interfaces on the same physical interface or multiple IP addresses on one interface.
The webserver can obtain the address the TCP connection was intended for using a standard api and uses this to determine which website to serve. The client is not involved in this process and therefore (unlike with name based virtual hosting) there are no compatibility issues.
Uses Virtual web hosting is often used on large scale in companies whose business model is to provide low cost website hosting for customers. The vast majority of such web hosting service customer websites worldwide are hosted on shared servers, using virtual hosting technology. To meet Wikipedias quality standards, this article or section may require cleanup. ...
Many businesses utilize virtual servers for internal purposes, where there is a technology or administrative reason to keep several separate websites such as customer extranet website, employee extranet, internal intranet, intranets for different departments. If there are not security concerns in the website architectures, they can be merged into a single server using virtual hosting technology, which reduces management and administrative overhead and the number of separate servers required to support the business.
See also Virtual Link Virtual private servers or Virtual dedicated servers are a form of virtualization that splits a single physical server into multiple virtual servers. ...
To meet Wikipedias quality standards, this article or section may require cleanup. ...
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