Re: [CentOS] NMAP - reveal MAC address

On Wed, 7 May 2008 21:47:51 -0400 "Clonch, Christopher A." cclonch2@mchs.com wrote:

...

...

The main function of a switch is to keep irrelevant packets away from

...

...

hosts, but packets to unknown (to the switch) hosts get sent everywhere, just like a Hub would do.

yes - thanks all, it appears its a cross network 'issue'

thanks

If you're trying to get a MAC address across your own switches, you could try walking the switch's forwarding table (assuming SNMP availability). It's a cheesy way but works!

This will only work on a local network: once you have the IP address, you can do an arp -v

You cannot get the MAC address of a routed IP address, it only exist on a local network.