Use of host headers fails after 4 hours

From: WillieWorstel (willieworstel_at_spam.la)
Date: 12/12/04 

Date: Sun, 12 Dec 2004 13:43:07 +0100

Hi,

I have a Windows 2003 (Standard Edition) webserver that is a standalone
server. It has the latest updates and patches. It hosts a few subdomain
sites of the companies domain, e.g. office.mydomain.com and
customers.mydomain.com. There a 3 websites hosted in total. The third is a
site that explains customers that they used an incorrect hostname or do not
support host headers in their browser.

If I reset the server, all works fine for about 4 hours. Thereafter only the
basic page is accessible by incorrect hostname or IP-address. The subdomains
defined in the host headers of the websites no longer respond. If I look in
the logs of IIS, it says it looked up the default page (default.asp) but
didn't transfer any content or images. Firefox tells me the document
contains no data.

My sites ares setup as:
URL: office.mydomain.com
Website: 001Office
Default doc: default.asp, index.html
Access: Any IP, anonymous allowed
Hostheader: port 80, office.mydomain.com, (any available address)

URL: customer.mydomain.com
Website: 002Customer
Default doc: default.asp, index.html
Access: Any IP, anonymous allowed
Hostheader: port 80, customer.mydomain.com, (any available address)

URL: none
Website: 003Failure
Default doc: default.asp, index.html
Access: Any IP, anonymous allowed
Hostheader: port 80, (no host header), (any available address)

What can be wrong. All updates are applied, even with only a plain HTML
index.html file and all websites pointing to the 003Failure directory, and
Everyone full control on the NTFS permissions, the webserver fails after a
few hours. Also tried a different router and public IP address, but without
any improvement (the Linux Apache server does not fail on the same routers
and LAN port).

Jeroen

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