Re: How do I alter returned iis name

From: Alun Jones (alun@texis.com)
Date: 08/30/02


From: alun@texis.com (Alun Jones)
Date: Fri, 30 Aug 2002 01:21:48 GMT


In article <#1ADSj7TCHA.1936@tkmsftngp10>, "Don Grover"
<dgrover@assoft.com.au> wrote:
>After having run a number of security type apps, I notice that the server
>Brand and Type is returned from those applications.
>I would like to return a different Server name?.
>I have checked Technet and MSDN and can't find any reference to doing that.
>I know if I query Server variables It returns back 'Microsoft-IIS/5.0' How
>can I alter that retunred string.

Have you seen any attacks that check for this string? I've run a few
'exposed' servers (deliberately, to see what kind of attacks are going round),
and without exception, the attacks that I see aren't targetted at my kind of
server. That makes sense, because it takes the attacker longer (and more time
and effort to code) to query your server type and check it against a database
than it does to just send the attack, knowing that it'll succeed only on those
servers that are susceptible to that attack.

It really won't get you any extra security to change the server type that's
returned, and it may cause client code to not use features of the server that
would be beneficial. Sounds like a draw and a loss, when what you were hoping
for was at least one win.

Alun.
~~~~

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