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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...allowDoubleEscaping gives Error 500allowDoubleEscaping gives Error 500
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10/26/2011 4:48 AM
 


Joined: 6/1/2011
Posts: 6
Hi
I have to redirect the /about+us.aspx to /about-us.aspx, but the RewriteRule is not working for the '+' character so I allowed double escaping, and so it gives Error 500.
Any help would be very much appreciated! Thanks!!

web.config:
   <requestFiltering
                  allowDoubleEscaping="true">
   </requestFiltering>

.htaccess:
    RewriteRule ^about\+us.aspx$ /about-us.aspx [R=301,L]
 
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10/26/2011 5:21 PM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
Thats odd - i had a similar query last year where the user had a problem with pages with a space in the title that was caused by the changes in the IIS7 configuration - i gave the advice below which was followed (the opton 2 advice to allowDoubleEscaping) and it worked for the user as expected. Do you have a  more detailed copy of the error i.e. the subtype

This is an IIS configuration issue  that was introduced in IIS7. It incorporates many of the protections that were previously only added via the Urlscan filter. One of these is protection against double escaping, and a side effect of this is that + is no longer valid as part of a url. This typically manifests itself in sites that run under IIS7 and use a rewriter such as urlmaster – one of urlmasters rules is to use “+” instead of a space (the urlencoded “%20”). There are 2 options to fix this:

 

1.       Switch to using “%20” for space in urls.  The con is that the URL is less readable.

2.       Change configuration on the webservers to permit “+” in the url (MS changed this default in IIS 7).

Applications that require the use of the “+” character in the URL path can disable this validation by setting the allowDoubleEscaping attribute in the system.webServer/security/requestFiltering configuration section in the application’s web.config.  However, this may make your application more vulnerable to malicious URLs:

<system.webServer>

    <security>

            <requestFiltering allowDoubleEscaping="true" />

    </security>

</system.webServer>

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10/27/2011 3:13 AM
 


Joined: 6/1/2011
Posts: 6
That's exactly what I did, I followed the second option, but when I changed the web.config I got the 500 error. I'm looking for a solution how could I solve that.

500 - Internal server error.
There is a problem with the resource you are looking for, and it cannot be displayed.
 
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10/27/2011 7:41 AM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
please see http://stackoverflow.com/questions/2014092/500-19-internal-server-error-requestfilteringmodule-config-error
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