RRAS disrupts my DNS

I have a small functional LAN with a single Windows Server 2003 R2 server
that server as the DC, DNS, WINS, and DHCP server. I have a hardware
firewall/router that supports 2 VPNs out to other offices. Both the server
and the DHCP client use only the internal DNS server and use the hardware
firewall as the DGW. The server has only 1 nic that is connected to the
local subnet with a static IP. Everything is working great.

The problem comes when I try setup the server as a RRAS server for a dial-up
modem. Everything appears to install correctly, but whenever a client
computer (XP) dials in to the RRAS server, the DNS on every computer stops
working. As soon as the client computer hangs up the line, everything
returns to normal.

The RRAS client is set to use DHCP and the Use Remote Gateway is checked.
I've tried using a Static IP pool, but it makes no difference. I'm not
understanding where the DNS is getting changed.

This is driving me crazy, any help would be appreciated!

Thanks, Carl Mudryk
C-mach Technologies Inc.

That is one of the reasons why using a DC running DNS as a remote access
server is not recommended. For a possible workaround see KB 292822 .

Carl Mudryk wrote:
> I have a small functional LAN with a single Windows Server 2003 R2
> server that server as the DC, DNS, WINS, and DHCP server. I have a
> hardware firewall/router that supports 2 VPNs out to other offices.
> Both the server and the DHCP client use only the internal DNS server
> and use the hardware firewall as the DGW. The server has only 1 nic
> that is connected to the local subnet with a static IP. Everything is
> working great.
> The problem comes when I try setup the server as a RRAS server for a
> dial-up modem. Everything appears to install correctly, but whenever
> a client computer (XP) dials in to the RRAS server, the DNS on every
> computer stops working. As soon as the client computer hangs up the
> line, everything returns to normal.
>
> The RRAS client is set to use DHCP and the Use Remote Gateway is
> checked. I've tried using a Static IP pool, but it makes no
> difference. I'm not understanding where the DNS is getting changed.
>
> This is driving me crazy, any help would be appreciated!
>
> Thanks, Carl Mudryk
> C-mach Technologies Inc.

Hi Bill,
Thanks for the response. I looked up the KB articles and have tried
everything with no joy. I tweaked the registry settings suggested, I set the
DNS server to only register its nic, I tried using a separate subnet for the
dial-up. I know that the DC is not the first choice, but this machine is
replacing an NT box that did the job successfully for 8 years or so... the
boss is not buying my explanations as to why I now need 2 machines to do the
job that one NT box did.

Anyways, I happen to have another decomissioned server kicking around, so I
reinstalled Server 2003 as a member server, updated the patches, moved the
modem and installed the RRAS server role after disabling it on the DC.

I still get the same result. The DNS log is showing an Error 4004 The DNS
server was unable to complete the directory enumeration...

Thanks again, Carl


"Bill Grant" <not.available@online> wrote in message
news:(E-Mail Removed)...
> That is one of the reasons why using a DC running DNS as a remote
> access server is not recommended. For a possible workaround see KB 292822
> .
>
> Carl Mudryk wrote:
>> I have a small functional LAN with a single Windows Server 2003 R2
>> server that server as the DC, DNS, WINS, and DHCP server. I have a
>> hardware firewall/router that supports 2 VPNs out to other offices.
>> Both the server and the DHCP client use only the internal DNS server
>> and use the hardware firewall as the DGW. The server has only 1 nic
>> that is connected to the local subnet with a static IP. Everything is
>> working great.
>> The problem comes when I try setup the server as a RRAS server for a
>> dial-up modem. Everything appears to install correctly, but whenever
>> a client computer (XP) dials in to the RRAS server, the DNS on every
>> computer stops working. As soon as the client computer hangs up the
>> line, everything returns to normal.
>>
>> The RRAS client is set to use DHCP and the Use Remote Gateway is
>> checked. I've tried using a Static IP pool, but it makes no
>> difference. I'm not understanding where the DNS is getting changed.
>>
>> This is driving me crazy, any help would be appreciated!
>>
>> Thanks, Carl Mudryk
>> C-mach Technologies Inc.
>
>