How could simulating the ports as open be useful? (sopuli.xyz)

submitted 2 months ago* (last edited 2 months ago) by sapporo@sopuli.xyz to c/programming@programming.dev

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I've read an article which describes how to simulate the close ports as open in Linux by eBPF. That is, an outside port scanner, malicious actor, will get tricked to observe that some ports, or all of them, are open, whereas in reality they'll be closed.

How could this be useful for the owner of a server? Wouldn't it be better to pretend otherwise: open port -> closed?

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[-] atzanteol@sh.itjust.works 1 points 2 months ago

Possibly to confuse os detection. Not sure if it would be sufficient though.

[-] mvirts@lemmy.world 1 points 2 months ago

Or slow down a complete scan, it would take a long time to scan all likely ports on a machine stealthily, and be quite obvious if that machine is set up as a honeypot.

this post was submitted on 24 Aug 2024

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