Programming

17312 readers

218 users here now

Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!

Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.

Hope you enjoy the instance!

Rules

Follow the programming.dev instance rules
Keep content related to programming in some way
If you're posting long videos try to add in some form of tldr for those who don't want to watch videos

Wormhole

Follow the wormhole through a path of communities !webdev@programming.dev

founded 1 year ago

MODERATORS

snowe@programming.dev

Ategon@programming.dev

MaungaHikoi@lemmy.nz

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

32 comments fedilink hide all child comments

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?

you are viewing a single comment's thread
view the rest of the comments

[–] dnick@sh.itjust.works 1 points 2 months ago

Maybe what you're referring to is along the lines of a port being open but the software on the other side of it not sending acknowledging responses?