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-- Webmaster General
---- Dedicated IP on Shared Hosting - Myths and Truths
jdMorgan - 2:00 am on Jul 4, 2009 (gmt 0) You can access your server before pointing any domain to your server's IP address in DNS (You can use its IP address to upload files to your server, for example).
Advantages of a dedicated IP address:
You can access your server in case of a DNS error or failure.
You can point any and as many domains as you like to the IP address of your server, and unlimited subdomains of those domains as well. You will not have to "declare" these by using the "add-on domain" function of a control panel -- everything can be done at the DNS level. The disposition of requests to those domains is entirely your choice as well; You can map them into the filespace of the server in any way you like (using mod_rewrite on Apache, for example).
(Mostly academic at this point in time) Your IP-based server is accessible to true HTTP/1.0 clients, which do not send an HTTP Host header with their requests. Name-based virtual servers are not accessible to true HTTP/1.0 clients. (Note that many search robots and proxies spoof HTTP/1.0 requests, which is why I used the term "true HTTP/1.0 clients" here. These are actually HTTP/1.1 or "extended HTTP/1.0" clients.) However, HTTP/1.0 is almost entirely obsolete now.
[edited by: jdMorgan at 2:01 am (utc) on July 4, 2009]
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