Re: getting the MAC address from an ip

[Steve Kemp <skx@debian.org>]

On Fri, Jun 24, 2005 at 02:52:40PM +0200, LeVA wrote:

> How can I get a machines mac address, if I only know it's ip?

  If it's on your LAN ping it then look at your arp cache:

skx@mystery:~$ ping -c 1 192.168.1.1 >/dev/null
skx@mystery:~$ /usr/sbin/arp 192.168.1.1
Address                  HWtype  HWaddress           Flags Mask
Iface
sun                      ether   08:00:20:C2:1E:F6   C                     eth0


  Or if you have a login you can use ifconfig to read it:

skx@mystery:~$ /sbin/ifconfig |grep HWaddr
eth0      Link encap:Ethernet  HWaddr 00:0A:E6:F6:A3:F4  

  If it's a remote host then you cannot....

Steve
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