Virtual Hosting vs. dedicated servers
Virtual hosting is hosting for multiple domain names on a single server or a pool of servers. It allows one server to share its resources, such as memory and processor cycles, without requiring all services provided to use the same hostname. Web servers, but the principles carry over to other internet services.
Shared web hosting prices are lower than a dedicated web server as many customers can be hosted on a single server. It is also widespread for a single entity to use multiple names on the same machine so that the words can reflect services offered rather than where those services are hosted.
Shared web hosting can be implemented in name-based and IP-based ways, although some control panels allow a mix of name-based and IP-based on one server.
There are two main types of virtual hosting:
i) Name-based and
ii) IP-based – Name-based virtual hosting uses the hostname presented by the client.
IP-based virtual hosting. It uses a separate IP address for each hostname, and it can be performed with any protocol but requires a dedicated IP address per domain name served. Port-based virtual hosting is also possible in principle but is rarely used in practice because it is unfriendly to users. It saves IP addresses and the associated administrative overhead, but the protocol served must supply the hostname at an appropriate point.
Name-based virtual hosts use multiple hostnames for the same IP address. The biggest issue with name-based virtual hosting is that hosting numerous secure websites running SSL/T LS is hard.
In shared hosting, a single IP address is shared among different websites; how does the web server know which website to serve when any request comes?
In name-based virtual hosting, also called shared IP hosting, the virtual hosts serve multiple hostnames on a single machine with a single IP address.
The SSL/TLS handshake takes place before the expected hostname is sent to the server; the server doesn’t know which certificate to present in the handshake. A single certificate can cover multiple names either through the “subject name” field or wild cards; however, the practical application of this approach is limited by administrative considerations and the matching rules for wildcards.
Furthermore, if the Domain Name System (DNS) is not correctly functioning, accessing a virtually-hosted website is hard even if the IP address is known. Since the web server relies on the web browser client telling it what server name to use, it will often respond with a default website, not the site the user expects. IP-based.
The web server is configured with multiple physical network interfaces, virtual network interfaces on the same physical interface, or multiple IP addresses on one interface. The web server can either open separate listening sockets for each IP address.
It can listen to all interfaces with a single socket and obtain the address where the TCP connection was received after accepting it. Either way, it can use the IP address to determine which website to serve. The downside of this approach is the server needs a different IP address for every site. It increases administrative overhead and contributes to IPv4 address exhaustion.
All name-based virtual hosts using the same IP address must share the same digital certificate. The SSL/TLS handshake occurs before the hostname is sent to the server. Thus, the server doesn’t know which encryption key to use when connecting. An extension to the TLS protocol, part of RFC 3546 – Transport Layer Security (TLS) Extensions, specifies a way for the client to provide the requested hostname as part of the handshake, but it is not yet widely implemented.
Virtual web hosting is often used on a large scale in companies whose business model is to provide low-cost website hosting for customers.
Most customer websites worldwide are hosted on shared servers using virtual hosting technology. Many businesses utilize virtual servers for internal purposes, where there is a technological or administrative reason to operate several separate websites, such as a customer extranet website and intranets for a different department.
Dedicated IP hosting
It means that you will be switched from name-based virtual hosting to IP-based virtual hosting, also called dedicated IP hosting, in which each virtual host has a different IP address. The web server is configured with multiple physical or virtual network interfaces on the same physical interface. The web server software uses the IP address the client connects to to determine which website to show the user.
Hosting virtual dedicated servers has become extremely important for large and small companies worldwide. The companies are now booming in the online market and planning to grow even more. As time passes,y are straying from the offline market and probing increasingly into the online market. Previously, they were content with their mere presence in the internet world. But then, they didn’t have the proper resources to strengthen their company, so more internet viewers visited them. With time, the development in the IT world has changed the entire scenario of Internet business and commerce. Almost every company tries to enter the online market with the proper infrastructure structure. Here comes the aspect of using the dedicated servers.
Presently, as can be seen everywhere, a significant number of companies depend on the hosting of virtual dedicated servers. There are a lot of reasons why they are doing so. On the other hand, the number of clients for shared hosting services is much less. This striking difference was possible because of the supremacy of the dedicated servers. All over the world, clients can find a lot of service providers for dedicated hosting. With exciting offers, they are inviting the clients to avail of them. But from the client’s part, it is essential to look at the suggestions and justify the price correctly. At the same time, the client has to consider whether he has the necessary features and support of the hosting virtual dedicated server. It is these services that ultimately lead to customer satisfaction.
The first thing the client should consider while tying up with any dedicated server service provider is the package he is getting. The package should include rack space, hardware and monitor maintenance, customer support, etc. All these services ultimately make the user experience comfortable. Many companies are trying to enter the online market with the proper traffic flow, so they must have all these features on their servers. Otherwise, they will not be in the rat race of the companies on the internet when a client books a dedicated service, and the entire server has been allotted to him. To control the server, he can take guidance from customer care. This is an integral part of the online business as the correct direction shows the right path to spread on.
Finally, one has to look at the aspect of cost. So far, as far as dedicated servers are concerned, the price is slightly higher than that of the other servers. If the servers are bought for individual usage, the user may find the purchase a little costly. But for trading use, the factor doesn’t stand as within a minimal time of purchase; the company can mug up the cost by earning good revenue. Overall, the virtual dedicated server hosting is excellent for trade usage.
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