Date: Thu, 30 Aug 2007 18:33:08 -0700 (PDT) From: L Goodwin <xrayv19@yahoo.com> To: Jeffrey Goldberg <jeffrey@goldmark.org> Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD Hostname Question - Whats The Proper Way Message-ID: <407356.383.qm@web58111.mail.re3.yahoo.com> In-Reply-To: <43F1E2AB-E5D0-4B64-8539-44C35557D965@goldmark.org>
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--- Jeffrey Goldberg <jeffrey@goldmark.org> wrote:
> On Aug 30, 2007, at 6:29 PM, L Goodwin wrote:
>
> > Do you mean avoid giving any machines on your LAN
> the
> > same hostname as the (hosted) web server, mail
> server
> > and ftp server? I don't even know what the
> hostname
> > for the web server is. The mail and ftp servers
> are
> > "mail.<domainname>.com" and
> "ftp.<domainname>.com", so
> > I guess I would not want to use these.
>
> I have a minimum of three names for any machine
> visible to the
> outside world.
>
> (1) I have the internal name that I give a box. A
> few years ago, I
> asked my daughter for help naming machines, and we
> ended up with a
> Harry Potter theme. So my primary external server
> (which has the
> most names) is dobby.ewd.goldmark.org, but that name
> isn't visible to
> the world. It's not secret, but I have no intention
> of having
> anything out side my local network needed to refer
> to it that way.
>
> (And in the Harry Potter scheme, my three headed
> firewall is named
> fluffy.)
>
> (2) But there is another name it must also have. I
> have a tiny block
> of IP addresses which all had PTR records associated
> with them like
>
> static-72-64-118-118.dllstx.fios.verizon.net.
>
> It took more than two hours on the phone to Verizon
> to get those
> changed, so it was something I only ever wanted to
> do once, so I have
> names like
>
> n114.ewd.goldmark.org
> n115.ewd.goldmark.org
>
> and so on. So dobby is also known of as
> n118.ewd.goldmark.org
>
> (3) Now dobby runs a couple of public servers. It
> runs Apache as
> www.goldmark.org and about half a dozen vhosts. It
> also also runs a
> mailserver (postfix) with mailman primarily visible
> under the name
> lists.shepard-families.org.
>
> So recapping. One is my quasi-private name for the
> box itself. And
> that is what hostname knows. Two is a name
> corresponding the the
> reverse lookup of any public IP address it might
> have. There may be
> several of these if the machine had multiple IP
> addresses. And three
> are "role" names for all of the services it runs.
> This way, if I
> want to move a service to a different host, that is
> relatively easy.
Thanks, Jeff!
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