From: "Geo." 

"Mike N."  wrote in message
news:fckv13h9bl5l8crrevckt4ur6nh2c5is5q{at}4ax.com...

>  I think the dynamic DNS updates use standard protocols over port 53.
> There may be other variations such as Active Directory integration and
> remote management that are using the RPC interface to DNS.

I think you may be right, however the dns manager application uses RPC..

Geo.

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