Re: 401 errors filling logfile

From: Tom Kaminski [MVP] ((A_at_T))
Date: 06/03/05 

Date: Fri, 3 Jun 2005 09:04:10 -0400

"topokin" <topokin@discussions.microsoft.com> wrote in message
news:C03B3773-5641-434B-8CC3-1DFE7253235D@microsoft.com...
> "Tom Kaminski [MVP]" wrote:
>> "topokin" <topokin@discussions.microsoft.com> wrote in message
>> news:6D1A3CAD-540C-4EEB-B7F2-606A77C4E8E0@microsoft.com...
>> > we have static intranet site which seems to be working fine without any
>> > displayed errors on IE, however, I just realized that "http-error 401"
>> > is
>> > filling the log with every users' access to the site.
>> >
>> > I have cross-checked users permission both on IIS and folders. The site
>> > is
>> > configured with "Integrated Windows Authentication" and
>> > "Everyone-Group"
>> > has
>> > FullControl permission on the folder. The funny thing is that the
>> > pages/Images are being viewed on IE without any problem, but why is
>> > these
>> > error entries in the log. An example is below:
>> >
>> > 2005-05-31 22:03:04 ClientIP - GET /images/PDFIconsmall.gif 401 4625
>> > HTTP/1.0
>> > Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.1;+.NET+CLR+1.1.4322)
>> > http://Intranetsite/Subfolder1/subfolder2/default.htm
>> >
>> > Any ideas?
>>
>> The "-" in the log may indicate an anonymous access attempt. The browser
>> will try to access anonymously first before authentication takes place.
>
> Is there any way to overcome such attempt, I need to get rid of the
> entries
> because it is populating the logfile unnecessarily.

If that is in fact what is happening, then no. Does the pattern suggest
that? It should only happen once per client browser session. 

-- 
Tom Kaminski IIS MVP
http://www.microsoft.com/windowsserver2003/community/centers/iis/
http://mvp.support.microsoft.com/
http://www.iistoolshed.com/ - tools, scripts, and utilities for running IIS

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