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A comment on Challenge HN: There's only one truly open port on this machine. Can you find it?. Parent comment

Re:Challenge HN: There's only one truly open port on this ma... by ksaj on Tuesday December 26, 2023 @07:37PM (#38777682)
That's the point of this post. Look at the packet headers for each return packet. Look for a difference in TTL, for example.
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