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Well this part is an exact answer to your Question about both MAC Address and Signal of nearby devices. Getting MAC Address of Devices NOT connected in your network Tutorial for using arp-scan & Full Documentation Here It shows all active devices even if they have firewalls. Since ARP is non-routable, it only works in local LAN (local subnet or network segment). Where -i denotes the interface (Here eth0) & -r denotes the `IP Range to be tested.Īrp-scan (also called ARP Sweep or MAC Scanner) is a very fast ARP packet scanner that shows every active IPv4 device in the network.

It can also be used for scanning hub/switched networks.

Netdiscover is used for the active or passive scanning of those wireless networks without the DHCP server. Both the tools Uses ARP Packets to get this information. Each system will then respond with their IP address and the switch or other device will then create a small database that maps the MAC to the IP address, so that it it knows "who is who". The router and switches send out broadcast ARP requests to all the MAC addresses on the network asking them to respond with their IP addresses. These tools are basically used in Penetration Testing of Wireless Networks and can be used to get to know who is in the Network by knowing their IP Address and MAC Address.ĪRP (Address Resolution Protocol) is used to map MAC addresses to IP addresses on an internal network. You can Use a number of tools for thus task such as Netdiscover, arp-scan, nmap and even WireShark. On Linux you can do the following: Getting MAC Address of Devices connected in your network So, I thought It would be useful to answer for Linux Platform too. Well Everybody answered the Question for Windows Platform only.