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all groups > iis security > march 2004 >

iis security : Anonymouse Access


Liblib
3/12/2004 8:53:51 AM
I recently had to enable anonymouse access on my server
after I started hosting a website. My problem is that I
started seeing strange IP addresses on my server
immediately. My server is behind an ISA firewall. My
question is how do I allow anonymouse access and still
prevent hackers on my server. Are there any specific ports
jcochran.nospam NO[at]SPAM naplesgov.com
3/12/2004 7:22:32 PM
On Fri, 12 Mar 2004 08:53:51 -0800, "Liblib"
[quoted text, click to view]

Starnge IP's aren't necessarily hackers. If you want to restrict your
site to a range of IP's then do so in ISA or IIS. Beyond that, secure
your system using ISA and the checklists available at microsoft.com,
and keep up to date on security fixes. See:

http://www.microsoft.com/security/
http://securityadmin.info/

Karl Levinson [x y] mvp
3/14/2004 7:54:37 AM
Additionally, you don't want to close ports, but leave all of them closed
and just open the ones you need open. Such as TCP 80 to your web server.

You can't really prevent attackers from trying to access your web server on
TCP 80, assuming your web site must be available to the general public.
What you need to do is secure your server and firewall to confirm that they
can withstand the most common attacks. Make sure you are using URLScan and
the hardening checklists for both Windows and IIS, all free at
www.microsoft.com/technet/security. Also
http://securityadmin.info/faq.asp#harden


[quoted text, click to view]

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