<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 22 Jun 2021 at 20:10, Russell Sutherland via Unbound-users <<a href="mailto:unbound-users@lists.nlnetlabs.nl">unbound-users@lists.nlnetlabs.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I want to be able to mirror the UDP port 53 going to my unbound instance for the purposes of testing out a new external DNS firewall service which we want eventually to start forwarding to. I want to be able to e.g. compare the responses with and without the service.<br>
<br>
I don't see any unbound feature or module to do this. Forwarding seems to go to one of the external caching servers given in the forward-addr: section.<br>
<br>
Any ideas of tools which allow me to do this? I am running unbound under both Ubuntu 20.04 LTS as well as OpenBSD 6.9<br>
<br>
Thanks in advance.<br>
<br>
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Russell P. Sutherland Email: <a href="mailto:russell.sutherland@utoronto.ca" target="_blank">russell.sutherland@utoronto.ca</a><br>
Network Engineer, I+TS Voice: +1.416.978.0470<br>
4 Bancroft Ave., Rm. 102 Cell: +1.416.803.0080<br>
University of Toronto<br>
Toronto, ON M5S 1C1<br></blockquote><div><br></div><div>tcpdump? <br></div></div></div>