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From André Warnier>
Subject Re: [users@httpd] Help with redirects and port-forwarding.
Date Wed, 16 Dec 2009 12:01:58 GMT
Philip Wigg wrote:
> Hi,
> I'm using Apache/1.3.36 and I don't have any room to change the
> version at the moment. I have a separate Virtual Host listening on
> port 8001:-
> <VirtualHost *:8001>
>     DocumentRoot "/opt/apache_1.3.36/htdocs"
>     ServerName
>     ErrorLog /var/log/http/example_error_log
>     TransferLog /var/log/http/example_access_log
>     RewriteCond %{REQUEST_URI} !^/portal.*
>     RewriteCond %{REQUEST_URI} !^/static.*
>     RewriteCond %{REQUEST_URI} !^/graphics.*
>     RewriteCond %{REQUEST_URI} !^/css.*
>     RewriteCond %{REQUEST_URI} !^/cgi-bin/.*
>     RewriteCond %{REQUEST_URI} !^/favicon.ico
>     RewriteCond %{REQUEST_URI} !^/robots.txt
>     RewriteRule ^(.*)$ /portal [R=301]
> </VirtualHost>
> There is a firewall which is port-forwarding from port 80 to port 8001
> on the web servers. The problem is that Apache is constructing
> self-referential URLs with the 8001 port number. For example, it's
> redirecting from to
> which is not what I want, I want
> it to keep port 80. I have tried using 'UseCanonicalName off' inside
> my Virtual Host block to no avail (UseCanonicalName is turned on in
> the main host block).
> Are there any other suggestions other than writing explicit redirects?
> Would UseCanonicalPhysicalPort fix my issue if I were using a later
> version?
What happens if you just replace you last RewriteRule by
      RewriteRule ^(.*)$ [R=301]

By doing the [R=301], you are forcing a 301 response back to the browser 
anyway, so you might as well make it explicit, and it should not add any 
extra overhead.

Otherwise, the easiest solution would be to have your firewall forward 
to port 80, not 8001, and change your VirtualHost to use 80.
(And maybe add another listening IP address to your server, if you need 
that to distinguish with another existing Apache instance on port 80).

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