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From Sander van Zoest <>
Subject Re: 301 Redirect through a firewall... Possible to hide the origin server ip address?
Date Sun, 16 Sep 2001 22:38:40 GMT
On Fri, 14 Sep 2001, Bill Stoddard wrote:

> Browser hits an Apache server through a firewall with a request like this:
> GET /manual HTTP/1.0
> manual is a directory which results in the server issuing a redirect thusly
> HTTP/1.1 301 Moved Permanently
> Date: Fri, 14 Sep 2001 17:37:22 GMT
> Server: Apache/1.3.20 (Unix)
> Location: http://origin_server/manual/
> Connection: close
> Content-Type: text/html; charset=iso-8859-1
> The origin server sits behind a firewall. The problem is that the Location
> header field contains the origin server name, not the name of the firewall,
> which is a bit of a security exposure.
> I really have no good ideas on how to prevent the location header field from
> having the origin_server name/address. Thoughts?

Did you use the ProxyPassReverse directive as described on

If I understand your problem correctly, having the above directive added
to your firewall (httpd/wmod_proxy?) httpd config, should fix the issue.

I do not think it makes sense to add a "fix" on the origin server, since
it is something that the firewall should handle.


Sander van Zoest                                
High Geek                               

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