I just got my first Vista machine today and I've been trying to get all
set up. Generally it's going alright, but I've hit a very puzzling issue.

Initially, I accidentally plugged the NIC into a port that was in the
DMZ. That gave me Internet connectivity but no local connectivity. Then
I realized what I did, so I switched to a port that's inside the
firewall. That gave me my local connectivity, but now I can't get to the
Internet. When I have Vista diagnose the problem it says it cannot
connect the the DNS server at 192.168.1.1, which is outside the
firewall. I'm using DHCP, so I did a ipconfig /renew, and a ipconfig
/flushdns. Then when I did ipconfig /all to see if all that took,
everything looked OK with my internal DNS server 192.168.111.1 being
specified. I tried to open a browser and still could not connect. I let
Vista diagnose again and I got the same error about not being able to
connect to the DNS server at 192.168.1.1.
I figured I must have missed something so I went back into the
connection properties and everything was set to automatic, and the DHCP
server inside the firewall gives out the DNS address as 192.168.1.1
(other machines on the LAN, like this XP machine I'm on now successfully
use this). So I tried even specifying 192.168.1.1 and even the external
DNS that forwards to and nothing changes. I always get the error saying
I cannot connect to the DNS server at 192.168.1.1, which is not
specified anywhere that I can find. I've also disabled/enabled the
adapter, deleted it from device manager, and let Vista try and repair it.

Anyone got any ideas? It seems like a bug, but maybe that DNS server is
just specified somewhere I'm not looking.

TIA!

Matt

MattB wrote:
I just got my first Vista machine today and I've been trying to get all
set up. Generally it's going alright, but I've hit a very puzzling issue.

Initially, I accidentally plugged the NIC into a port that was in the
DMZ. That gave me Internet connectivity but no local connectivity. Then
I realized what I did, so I switched to a port that's inside the
firewall. That gave me my local connectivity, but now I can't get to the
Internet. When I have Vista diagnose the problem it says it cannot
connect the the DNS server at 192.168.1.1, which is outside the
firewall. I'm using DHCP, so I did a ipconfig /renew, and a ipconfig
/flushdns. Then when I did ipconfig /all to see if all that took,
everything looked OK with my internal DNS server 192.168.111.1 being
specified. I tried to open a browser and still could not connect. I let
Vista diagnose again and I got the same error about not being able to
connect to the DNS server at 192.168.1.1.
I figured I must have missed something so I went back into the
connection properties and everything was set to automatic, and the DHCP
server inside the firewall gives out the DNS address as 192.168.1.1
(other machines on the LAN, like this XP machine I'm on now successfully
use this). So I tried even specifying 192.168.1.1 and even the external
DNS that forwards to and nothing changes. I always get the error saying
I cannot connect to the DNS server at 192.168.1.1, which is not
specified anywhere that I can find. I've also disabled/enabled the
adapter, deleted it from device manager, and let Vista try and repair it.

Anyone got any ideas? It seems like a bug, but maybe that DNS server is
just specified somewhere I'm not looking.

TIA!

Matt

I also just tried hunting around in Regedit, and 192.168.1.1 is in there
several times in keys called "DhcpNameServer". So I replaced it with
192.168.111.1 and rebooted, but looking again I see my changes didn't
stick (original values are back again).

Matt