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Network Security Security-Basics
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Re: IIS Logfile

Subject: Re: IIS Logfile
Date: 26 Oct 2004 16:16:41 -0000
In-Reply-To: <1098740925.417d74bd08f00@webmail.fdta-valles.org>


I understand that some "whois" site is checking my server, but Is this
dangerous? Should I block this IP?

The returned HTTP response code is 401, indicating an error.  According to 
TechNet, 401 response codes have to do with failures due to unauthorized 
access.  

Since the query is failing, I'm curious as to how this activity would appear to 
be dangerous.  Are you seeing something else occuring on your server, which may 
be a result of this log entry?  If so, can you describe it?

Thanks,

Harlan Carvey
"Windows Forensics and Incident Recovery"
http://www.windows-ir.com

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