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<p>port 53 is only open directed to forwarders <br>
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<p>as I read , you think to use different forwarders so , port 53 should be open to all IP , right ?</p>
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<p>I think u should read how DNS works, TLD and so on</p>
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<p>simply drop forwarders only use TLD</p>
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<div id="x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> bind-users <bind-users-bounces@lists.isc.org> on behalf of Omid Kosari via bind-users <bind-users@lists.isc.org><br>
<b>Sent:</b> Saturday, September 16, 2017 1:19 PM<br>
<b>To:</b> bind-users@lists.isc.org<br>
<b>Subject:</b> Re: Different forwarder for certain response ip (result ip )</font>
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<div class="PlainText">Wow . I love active community .<br>
<br>
Actually my situation is a bit strange . But as explanation i can say that<br>
our upstream provider do dns manipulation on normal ports 53 tcp/udp (please<br>
don't ask why). We may not use vpn or tunnels . The only way is using<br>
alternate ports as forwarders.<br>
<br>
But i can not use alternate ports as my main forwarders because if so , then<br>
upstream provider may be aware of that and manipulate them also . So if i<br>
could use them only for certain requests then everything may work fine.<br>
<br>
Note:My BIND dns server is caching server .<br>
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<br>
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