On 22/08/14 06:03, ToddAndMargo wrote: > Hi All, > > I have a Windows program > > http://sourceforge.net/projects/autoscan/ > > that will find all the MAC address on a Ethernet. > Last time I used it, it found stuff on 192.168.1.0/24 > and 192.168.88.0/24. Helped me fix everything so > they were on the same network. > > There is a Linux tarball for autoscan, but I can not > find an RPM for it. And, the tarball has no spec > file in it. > > I could really use this functionality on Linux. As > far as I can tell, nmap will only locate stuff on > the current network, not everything on the Ethernet. > > Any idea how to do this with nmap or similar? I > would really like to use nmap, if I could. > > I have tried "overlook fing", but it only finds stuff > on the current network. > > Many thanks, > -T > > > It's a slightly different approach, but I use arpwatch to passively monitor arp activity on the network. It creates a log of discovered MAC addresses and IPs in /var/lib/arpwatch/arp.dat. It can be configured to send email alerts when it finds IPs that don't match the local subnet (see "bogon"). Rob -- Rob O'Neale Research Computing Support Officer College of Engineering, Mathematics and Physical Sciences University of Exeter [log in to unmask] 01392 726342