RE: Securing web site with redundancy ?

["Ivan Groenewald" <ivang2 () xtrahost co uk>]

In Windows 2003 there is built in network load balancing that works with
IIS6. (MS NLB)
http://www.microsoft.com/resources/documentation/IIS/6/all/techref/en-us/iis
RG_SCA_4.mspx


In 2000 with IIS5 you can do webserver clustering from within IIS
http://www.microsoft.com/windows2000/en/server/iis/default.asp?url=/windows2
000/en/server/iis/htm/core/iiclusus.htm

Alternatively a hardware solution like a Cisco CSS 11500 would also do.

Ivan


-----Original Message-----
From: Josh Tolley [mailto:josh () raintreeinc com] 
Sent: 20 August 2004 23:51
To: Bénoni MARTIN
Cc: security-basics () securityfocus com; pen-test () securityfocus com
Subject: Re: Securing web site with redundancy ?

There are loads of such options -- if you like Linux, the LVS project 
will do what you want. You might also look at heartbeat and mon, also 
linux utils. I couldn't tell you what commercial options you might want 
to use other than Windows clustering, which would do this as well. For 
that you may require some sort of shared storage, and a switch that's 
compatible -- it can do some funny things with arp, which really 
confuses a lot of switches (ours, for example, which has decided to 
broadcast all traffic to our cluster all over our LAN, which makes it a 
huge pain to use. Perhaps we have it configured wrong, but I haven't had 
time to look at it much).

Josh Tolley
Raintree Systems, Inc.
http://www.raintreeinc.com
760 509 9000


Bénoni MARTIN wrote:
> Hi all !
>
> I was wondering if there was a way to set up 2 "redundant" web servers
(identical web sites), i.e. when one crashes, the other one takes the
connection over. The same thing which is already available for firewalls
(high disponibility), but with web servers.
> We would have 2 Windozes in a DMZ with IIS as the web server, and a pix
firewall between the dmz and Internet. Is there any tool allowing this out
there ? I tried to google quite a while, but without any chance...
> Some one has an idea ?
>
> Cheers list !
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