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I am trying to get an idea of how to get a list of all the MAC/IP's near my network. I've tried arp -a commands (What I found from some previous searching.) but those are not showing any of the iPhones or iPads that I know are for sure in range. The goal is to get all available devices, not only ones that are already connected. I have zero programming or networking experience so please be as simple as you can with a response. This is for a business meeting I have coming up with some IT guys, and I would like to have a general idea of how this can work before I get there.

HopelessN00b
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zshock
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  • `1.` If a device isn't active on the network then you're not going to be able to get it's MAC address. `2.` You need to run an ARP/MAC scan on the network to get the MAC addresses of all of the active devices. Running something like this on a Windows machine would work- http://www.colasoft.com/mac_scanner/index.php?act=mac_scanner – joeqwerty Dec 01 '14 at 18:22
  • If you have a Linux based firewall install [arpalert](http://www.arpalert.org/arpalert.html) or another package like that. – Zoredache Dec 01 '14 at 18:31

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A few ways to do this, but my goto is nmap.

sudo nmap -sP -n 123.456.789.0/24

Also you can use arp -an

Gregory Patmore
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  • arp -an gave me similar results to the arp -a, as I would've guessed just by basic logic. Still trying to include iOS devices. The sudo command is just asking for a password, which I apparently don't know after trying all the passwords I believe to be relevant to my laptop and network, but I suppose the people who do this for a living will know these types of things for my specific case. I appreciate your input though. @GregoryPatmore – zshock Dec 01 '14 at 19:07
  • the sudo password will be your own password, if you're allowed admin rights on the machine it'll let you run stuff as root. – Sirex Dec 01 '14 at 19:09
  • i usually do a broadcast ping anyhow, `ping 255.255.255.255 -b` – Sirex Dec 01 '14 at 19:10
  • broadcast ping can work too. – Gregory Patmore Dec 01 '14 at 20:10
  • @zshock: sudo would be to run the command as the root user. If you already are logged in as root user you can omit the sudo command. – Gregory Patmore Dec 01 '14 at 20:11