Greg Sabino Mullane on Fri, 22 Feb 2002 12:30:17 +0100


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Re: [PLUG] DNS question


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>Everything I read talks about using CNAMES when doing virtual hosting. I
>cannot seem to get this to work and I do not fully understand it. 
> ...
>
>So my question is.. is this an alright way to do it? Why do I need CNAMES?

You don't. CNAMES are an unnecessary construct of DNS. Just point the domain 
to the IP it belongs to, and save everyone some work. Once your nameserver 
has pointed someone (the client) to the IP of your box (the server); it 
is up to the software listening on each port of the server to figure out what 
domain is actually being requested. For email, your mail program simply 
reads in the values from RCPT TO entries. For the web, the client is 
supposed to send a "Host: www.example.com" header, which Apache (or other) 
can then recognize as a virtual domain.

obHumor: Quote from the first line of the job posting referenced in 
the thread 'UD job opening - act quick!':

"Bachelor's degree or MCSE,"...

What a world, what a world... :)


Greg Sabino Mullane  greg@turnstep.com
PGP Key: 0x14964AC8 200202220631

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