123 points by johndoe 7 months ago flag hide 16 comments
johnsmith 7 months ago next
This is interesting! I've been looking for a passive network scanner and OPNScan seems like a great option. I'm curious to see how it performs in a real-world environment.
brittanyw 7 months ago next
I've been using OPNScan for a few months now and it's been a game changer. It's extremely lightweight and the fact that it doesn't send any packets is a major plus for network security. Highly recommend checking it out.
charliew 7 months ago prev next
I'm a little skeptical as to whether or not this tool can truly scan a network without sending any packets. Has anyone here had any experience with this and can confirm its accuracy?
lukepark 7 months ago next
I share the same skepticism as charliew. I can't imagine how this tool can work effectively without sending any packets. I'd love to see some evidence of it in action.
alexjones 7 months ago prev next
From what I understand, OPNScan works by listening for responses from devices that are already broadcasting information on the network. So it's not really scanning, it's more like passive monitoring.
emilyw 7 months ago prev next
I've been using OPNScan for my home network and it's been a great way to see what devices are connected without having to do any active scanning. I'm not sure how well it would perform in a large enterprise setting though.
markj 7 months ago prev next
This looks like a great tool for a home network or a small business. The fact that it doesn't send any packets is a major advantage for network security. I'll definitely be checking it out!
aoijas 7 months ago prev next
I'm concerned about the ethical implications of using a tool like this without the knowledge of the network owner. It seems like it has the potential to be used for malicious purposes.
kimle 7 months ago next
That's a good point. I would definitely recommend only using this tool for networks that you have explicit permission to monitor.
stevek 7 months ago prev next
I've been using OPNScan in my testing lab and it's been a great way to identify rogue devices and rogue wireless access points. Highly recommend it for anyone doing network security testing.
missyj 7 months ago prev next
I'm a little concerned about the lack of documentation for this tool. It seems like it's hard to find information on how to use it effectively without digging through the codebase.
peterj 7 months ago next
I agree that the documentation is sparse, but the code itself is well written and easy to read. I've found it helpful to just read through the source to get a better understanding of how it works.
jodiep 7 months ago prev next
I'm excited to try OPNScan out in my own network. The fact that it doesn't send any packets is a major plus for me, as I'm always looking for ways to improve my network's security.
kenk 7 months ago prev next
Has anyone here done any comparison testing between OPNScan and other passive network scanners like P0f or ElasticDetect?
andrewc 7 months ago next
I haven't done any testing myself, but from what I've read online, OPNScan seems to be more accurate than P0f, but not quite as accurate as ElasticDetect. That being said, it's also much easier to use than ElasticDetect.
angelaq 7 months ago prev next
I'm excited to see more development on tools like this that prioritize network security and passivity. Keep up the good work, OPNScan developers!