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| Subject: | Re: Pubstro rash |
|---|---|
| Date: | Thu, 17 Mar 2005 19:07:25 -0500 |
Greetings David,
Just a thought about your third comment...
As far as I'm concerned DNS just uses 53/TCP to do zone transfers. In case your workstations are on a different network than your DNS servers it should probably be safe to block incoming TCP connections to that network on such port.
Tipically zone transfers would only be used by secondary servers to update their own zones from its primary server.
So, 53/tcp is NOT just for zone transfers.
Jeff
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