PeterR wrote:
> My W2K3 DNS responds to TCP queries, but not UDP. It appears that
> something in the O/S is filtering/blocking UDP/53 to the DNS server,
> but I have no idea what. I've determined this by turning on the DNS
> debug log - no query is received.
> Situation:
> - Standalone (workgroup) machine with IIS and a few other bits
> installed. No DHCP or WINS
> - Windows Firewall disabled
> - Will answer using nslookup on machine itself, but not from another
> machine in the same LAN segment - no firewall/router in between.
> - Public IP address
>
> I've searched everywhere for an answer but so far no clue. I've even
> changed to a 3rd-party DNS server, which exactly the same results.

What other services are installed and running?

There are only a couple of services that have packet filtering ability, one
Windows firewall, another is in the TCP/IP properties, Advanced button,
Options tab, another would be in RRAS. Some AV programs also come with a
firewall. A 'net start' command will give you a list of running services,
and one may jump out at you as a suspect.

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This s
===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
http://www.lonestaramerica.com/
http://support.wftx.us/
http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
http://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:
http://www.oe.com/OEBackup/Default.aspx
===================================