XP SP2 (Loopback Address issue)

Remember this article ?
Programs that connect to IP addresses that are in the loopback address range may not work as you expect in Windows XP Service Pack 2
http://support.microsoft.com/?id=884020

With SP2, it lock down all loopback address except 127.0.0.1. This might affect quite a number of program including IIS5.1 if you binding it to other loopback address and so on.

You need to get the hotfix by ringing Microsoft PSS. But just know I found this download @ MS download site:
http://www.microsoft.com/downloads/details.aspx?FamilyID=17d997d2-5034-4bbb-b74d-ad8430a1f7c8&displaylang=en

This is the hotfix for the above KB, so you can skip the PSS call.

Published Sat, Sep 18 2004 11:07 by bernard
Filed under: ,

Comments

# bernard said on 20 September, 2004 09:29 AM
All loopback address except 127.0.0.1?
I thought it was done on purpose. Is one address not enough?
# bernard said on 20 September, 2004 11:52 AM
Yes, but some programs might depend on other addresses. This is what had happen and MS is providing this fix, if you 'like' to remove this restriction.
# bernard said on 25 September, 2004 05:29 AM
We need other addresses on the loopback adapter when we deploy some common configurations concerning load-balancing using load-balancers like BigIP (F5), ServerIron(Foundry), or Alteon.
(I am thinking about the patterns of DSR:Direct Server Response...)
# bernard said on 25 September, 2004 11:42 AM
Arigato tomo yo :)
# bernard said on 27 September, 2004 10:26 PM
I tend to install the Loopback Adapter and bind to that. It also means that,on my laptop, I can bind Virtual PC images to it too and have them all communicating without touching the network at all.

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