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  • #2295
Closed
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Issue created Nov 20, 2020 by Mark Andrews@markaDeveloper

Add the ability to specify that a server supports COOKIES.

We currently learn whether a server supports cookies or not as part of the lookup process. This leaves an exposure window where a spoofed UDP response without a cookie can be accepted. Fallback to TCP if the response does not have a valid TSIG or client cookie when require-cookie is true.

server <prefix> { require-cookie <bool>; };

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