[dns-operations] DNS Issue

Paul Wouters paul at cypherpunks.ca
Wed Apr 24 15:18:27 UTC 2013

On Wed, 24 Apr 2013, Chip Marshall wrote:

> Are you doing query source port randomization?
> https://www.dns-oarc.net/oarc/services/porttest

I have been hearing more reports of people in the last two weeks that
DNS queries originating from port 53 are getting blocked. slashdot.org
was one of those domains that started failing when your recursing name
server is configured to use a query port of 53.

I'm not sure if this is related to some cloud provider, or a
firewall/router vendor.


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