Re: Virtual Hosting ??

[Ian Stuart <Ia...@ed.ac.uk>]

On Wed, 2002-08-14 at 10:23, G the B wrote:
At the office we have three servers. SERVER 1 runs a http server for our
web site on the port 80.
SERVER 2  runs a http server for the webmail (lotus domino). The webmail
server is at the moment not accessible from the web. I would like to
make it accessible.
In the rules of the main firewall that protects the LAN it is said that
when an icoming connection comes on the port 80 it is forwarded to
SERVER 1.

Exp: When from your web browser you type  www.domain.be  you get on the
web site (on SERVER 1)
Now we would like that when we type from outside the LAN  for example 
mail.domain.be  we get a web page with the webmail server (only for the
employees of the company).

The easy answer (short on the nitty-gritty) is to set up www.domain.de
to do proxy-ing, and to make mail.domain.de a virtual host within it
(make mail.domain.de another DNS alias for whatever www.domain.de is
alias'd to. ie www.domain.de -> server43.domain.de && mail.domain.de ->
erver43.domain.de. [You have set up wwww.domain.de as an alias, not an
actual host name, haven't you?])

Thus, when a request comes in for mail.domain.de, it goes to the same
physical server as www.domain.de. The server recognises mail.domain.de
as a virual host, so uses the vhost config - which includes a proxy
command for webmail.domain.de.

Kinda like this:
<VirtualHost 1.2.3.4> # using IP, see dns-caveats.html manual page
    ServerAdmin mail.admin@domain.de
    ServerName mail.domain.de
    ErrorLog /path/mail_error_log
    CustomLog /path/mail_access_log common
    ProxyPass / http://webmail.domain.de/
    #
    # webmail.domain.de is a seperate httpd
    #
    ProxyPassReverse / http://webmail.domain.de/
</VirtualHost>

If you want access to an internal-only web server called mail.domain.de
using an external address of mail.domain.de, you'll need to do stuff
with the firewall - which is a different problem.

NOTE: This has made no attempt to authenticate that the person trying to
access the mail server is a valid user - that is a whole other problem
:)

-- 
--==++
Ian Stuart: Edinburgh University Data Library.

Information is not knowledge
Knowledge is not wisdom
Wisdom is not truth
Truth is not beauty
Beauty is not love
Love is not music
              -- Mary.

 Personal web site: http://lucas.ucs.ed.ac.uk/ 


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Re: Virtual Hosting ??

[Glen Lee Edwards <gl...@fcwm.org>]

Ian,

I'm not familiar with lotus domino.  I'm using TWIG.  It's running off 
the web server, but is configured so that it accesses the mail off the 
mail server through the LAN (IMAP).  This way I only need to set up one 
web server.

Glen



On Wednesday 14 August 2002 04:54 am, Ian Stuart wrote:
> On Wed, 2002-08-14 at 10:23, G the B wrote:
> At the office we have three servers. SERVER 1 runs a http server for
> our web site on the port 80.
> SERVER 2  runs a http server for the webmail (lotus domino). The
> webmail server is at the moment not accessible from the web. I would
> like to make it accessible.
> In the rules of the main firewall that protects the LAN it is said
> that when an icoming connection comes on the port 80 it is forwarded
> to SERVER 1.
>
> Exp: When from your web browser you type  www.domain.be  you get on
> the web site (on SERVER 1)
> Now we would like that when we type from outside the LAN  for example
> mail.domain.be  we get a web page with the webmail server (only for
> the employees of the company).
>
> The easy answer (short on the nitty-gritty) is to set up
> www.domain.de to do proxy-ing, and to make mail.domain.de a virtual
> host within it (make mail.domain.de another DNS alias for whatever
> www.domain.de is alias'd to. ie www.domain.de -> server43.domain.de
> && mail.domain.de -> erver43.domain.de. [You have set up
> wwww.domain.de as an alias, not an actual host name, haven't you?])
>
> Thus, when a request comes in for mail.domain.de, it goes to the same
> physical server as www.domain.de. The server recognises
> mail.domain.de as a virual host, so uses the vhost config - which
> includes a proxy command for webmail.domain.de.
>
> Kinda like this:
> <VirtualHost 1.2.3.4> # using IP, see dns-caveats.html manual page
>     ServerAdmin mail.admin@domain.de
>     ServerName mail.domain.de
>     ErrorLog /path/mail_error_log
>     CustomLog /path/mail_access_log common
>     ProxyPass / http://webmail.domain.de/
>     #
>     # webmail.domain.de is a seperate httpd
>     #
>     ProxyPassReverse / http://webmail.domain.de/
> </VirtualHost>
>
> If you want access to an internal-only web server called
> mail.domain.de using an external address of mail.domain.de, you'll
> need to do stuff with the firewall - which is a different problem.
>
> NOTE: This has made no attempt to authenticate that the person trying
> to access the mail server is a valid user - that is a whole other
> problem
>
> :)


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