<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 9, 2022 at 1:51 PM Matus UHLAR - fantomas <<a href="mailto:uhlar@fantomas.sk">uhlar@fantomas.sk</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">>On 09. 05. 22 10:34, Alex K wrote:<br>
>>The initial and current approach is to provide DNS free of charge, <br>
>>which simplified things for me. Though the traffic in question is <br>
>>satellite traffic with monthly allowances of roughly 4 to 8GB, thus <br>
>>every MB counts.<br>
>>The problem now is that I see sometime 700MB of DNS traffic for 2GB <br>
>>of Internet browsing within one month.<br>
<br>
On 09.05.22 10:47, Petr Špaček wrote:<br>
>Sounds like either:<br>
>- Broken caching or,<br>
>- Random subdomain attack<br>
>to me.<br>
<br>
maybe someone uses VPN over DNS...<br>
in such case, rate limiting of client comes to mind...<br></blockquote><div>That would mean that the clients have access to their own dns servers, which the firewall does not allow.</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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