Maintained under FreeBSD by: brian@awfulhak.org ARPWATCH 2.0 Lawrence Berkeley National Laboratory Network Research Group arpwatch@ee.lbl.gov ftp://ftp.ee.lbl.gov/arpwatch.tar.Z This directory contains source code for arpwatch and arpsnmp, tools that monitors ethernet activity and maintain a database of ethernet/ip address pairings. It also reports certain changes via email. Arpwatch uses libpcap, a system-independent interface for user-level packet capture. Before building arpwatch, you must first retrieve and build libpcap, also from LBL, in: ftp://ftp.ee.lbl.gov/libpcap.tar.Z. Once libpcap is built (either install it or make sure arpwatch and libpcap share the same parent directory), you can build arpwatch using the procedure in the INSTALL file. Arpsnmp has the same database features of arpwatch but relies on an external agent to collect the arp data. This distribution contains a script, arpfetch, that uses snmpwalk from the CMU SNMP package. This package is available from: ftp://ftp.net.cmu.edu/pub/snmp-dist/cmu-snmp*.tar.Z It should be trivial to adaptive the output of any snmp query program for use with arpsnmp. Please send bugs and comments to arpwatch@ee.lbl.gov.