HTTP-DNS Problem with WAN Site
- From: "William Robertson" <robertson.william@xxxxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Mon, 8 Dec 2003 09:34:42 +0200
(Ha, fixed it this time…)
Hi there
I have what I think is an interesting scenario. My whole ISA setup currently
works like a charm for all of the fancy schmancy requests I’ve had from
my
users. But this latest one baffles me intensely. I have a PIX firewall
behind my ISA (LAN → ISA →PIX → Internet), off which I
host a DMZ segment
to my parent company over a WAN link.
My DNS Server is also hosting a secondary DNS to their primary Windows 2000
DNS Servers so that I am able to name lookup their servers etc. I have thus
also added their domain name to my "Append these DNS suffixes..." option
under TCP/IP DNS properties on my workstation, and any nslookup for a server
in their domain works 100%.
The problem is though, when I try and connect to ANY of their websites (and
there are quite a few) via IE, I can only connect by using the IP Address of
the site, and *NOT* the FQDN. As noted, all DNS lookups work fine, (except
Reverse Lookups - is that a problem?), and I cannot think of anything else
more to try. I have enabled debugging on my PIX to see if there is any
traffic, and when using the FQDN the traffic does not even get to my PIX, so
that tells me the problem is between my IE and the ISA.
Is there perhaps someone who has a similar scenario that may be able to
suggest something?
Cheers
William R.
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