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submitted 1 day ago* (last edited 9 hours ago) by RestrictedAccount@lemmy.world to c/nostupidquestions@lemmy.world

UPDATE 10/4 6:47 EDT

I have been going through all the comments. THANKS!!!!!! I did not know about the techniques listed, so they are extremely helpful. Sorry for the slow update. As I mentioned below, I got behind with this yesterday so work cut into my evening.

I ran a port scan. The first syntax, -p, brought no joy. The nmap software itself suggested changing to -Pn. That brought an interesting response:

nmap -Pn 1-9999

Starting Nmap 7.93 ( https://nmap.org ) at 2024-10-04 11:44 BST Failed to resolve "1-9999". Nmap scan report for Host is up (0.070s latency). All 1000 scanned ports on 192.168.0.46 are in ignored states. Not shown: 990 filtered tcp ports (no-response), 10 filtered tcp ports (host-unreach)

Nmap done: 1 IP address (1 host up) scanned in 6.03 seconds

Just to be absolutely sure, I turned off my work computer (the only windows box on my network) and reran the same syntax with the same results.

As I read this, there is definitely something on my network running windows that is not showing up on the DHCP.

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[-] fmstrat@lemmy.nowsci.com 17 points 18 hours ago

Others haven't suggested this yet, but a single device, like your laptop, even with one connection, can have two IPs.

[-] RestrictedAccount@lemmy.world 5 points 8 hours ago

Thanks. It is neither the Ethernet nor the Wi-Fi on my windows laptop.,

[-] caseyweederman@lemmy.ca 7 points 6 hours ago

Don't just turn your devices off when testing - - unplug them. An off computer can still respond to network requests.

[-] RestrictedAccount@lemmy.world 4 points 6 hours ago

I did not think of this. I will have to go into the bios to turn off the battery of my work laptop.

[-] caseyweederman@lemmy.ca 4 points 4 hours ago

There's Power Over Ethernet too.

this post was submitted on 03 Oct 2024
277 points (98.9% liked)

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