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<div class="moz-cite-prefix">Le 25/01/2018 à 19:22, Simon Deziel a
écrit :<br>
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<blockquote type="cite"
cite="mid:eef95729-e255-5b04-7df5-a4285dd927ba@gmail.com">
<pre wrap="">Maybe you can configure IPtables to look for those 4 bytes of 0s [1]
when the UDP/4500 packet is an IKE one?
[1]
<a class="moz-txt-link-freetext" href="https://docs.microsoft.com/en-us/windows-hardware/drivers/network/udp-esp-encapsulation-types" moz-do-not-send="true">https://docs.microsoft.com/en-us/windows-hardware/drivers/network/udp-esp-encapsulation-types</a>
HTH,
Simon</pre>
</blockquote>
Yes, good idea ! Thanks !<br>
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