中華製監視カメラからとんでく接続こええ。もちろんブロックしてるけど 宛先ポートが変なポートだったり53なの偽装する気まんまんじゃんpic.twitter.com/6baqhbWfiY
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thank you I'm now clear.
in this case httpdns was NOT used here. but other ISP may have tricks (=hijack) in their dns servers, or https cert may become replaced(that is possible MITM). that is why httpdns is invented. so in one word, ISP is untrusted.
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