What Is Virtual Hosting | Uses Of Virtual Hosting
In this article of today, what is virtual hosting? I have tried to give all kinds of information about it related to virtual hosting.Virtual hosting is a method for hosting multiple domain names (with different handling of each name) on a single type of server (or pool of servers). This allows a server to share its resources such as memory and processor cycles, without the need for all services provided to use the same hostname. The term virtual hosting is commonly used to refer to web servers, but the principles run on other Internet services.
Virtual Hosting |
There are two main types of virtual hosting, name-based and IP-based. Name-based virtual hosting uses the host name represented by the client. This saves IP addresses and associated administrative overhead, but the protocol being served must supply the host name at an appropriate point.
In particular, there are significant difficulties in using name-based virtual hosting with SSL / TLS. IP-based virtual hosting uses a different IP address for each host name, and can be done with any protocol but requires one dedicated IP address per service. Port-based virtual hosting is also possible in principle, but is rarely used in practice because it is unavoidable for users.
Name-based and IP-based virtual hosting can be combined: a server can have multiple IP addresses and can serve multiple names on some or all IP addresses. This technique can be useful when using SSL / TLS with a wildcard certificate. For example, if a server operator has two certificates, one for .example.com and one for .example.net, the operator can serve foo.example.com and bar.example.com from the same IP address. But it would require a different IP address for baz.example.net.
Use Of Virtual Hosting
Virtual web hosting is often used extensively in companies whose business model is to provide low-cost website hosting for customers. The majority of worldwide web hosting service customer websites are hosted on shared servers, using virtual hosting technology.
Many business companies use virtual servers for internal purposes, where there is a technical or administrative reason to operate many different websites, for example customer extranet websites, employee extranets, internal intranets and intranets for different departments. If the website architecture does not have security concerns, 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.
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