NAME

       arpsnmp - keep track of ethernet/ip address pairings

SYNOPSIS

       arpsnmp [ -d ]
               [ -f datafile ]
               [ -s sendmail_path ]
               [ -m addr ]
               file [ ...  ]

DESCRIPTION

       Arpsnmp keeps track for ethernet/ip address pairings. It syslogs activity and reports certain changes via
       email.  Arpsnmp reads information from a file (usually generated by snmpwalk(8)).

       The -d flag is used enable debugging. This also inhibits mailing the reports.  Instead, they are sent  to
       stderr.

       The -f flag is used to set the ethernet/ip address database filename.  The default is arp.dat.

       (Debian)  The  -s  flag  is used to specify the path to the sendmail program.  Any program that takes the
       option -odi and then text from stdin can be substituted. This is useful for redirecting  reports  to  log
       files instead of mail.

       (Debian)  The -m option is used to specify the e-mail address to which reports will be sent.  By default,
       reports are sent to root on the local machine.

       Note that an empty arp.dat file must be created before the first time you run arpsnmp.

REPORT MESSAGES

       (See the arpwatch(1) man page for details on the report messages generated by arpsnmp(1).)

FILES

       /var/lib/arpwatch - default directory
       IFNAME.dat - ethernet/ip address database observed on interface IFNAME
       ethercodes.db - vendor ethernet block list

SEE ALSO

       arpwatch(8), snmpwalk(8), arp(8)

AUTHORS

       Craig Leres  of  the  Lawrence  Berkeley  National  Laboratory  Network  Research  Group,  University  of
       California, Berkeley, CA.

       The current version is available via anonymous ftp:

              ftp://ftp.ee.lbl.gov/arpwatch.tar.gz

BUGS

       Please send bug reports to arpwatch@ee.lbl.gov.

       Attempts are made to suppress DECnet flip flops but they aren't always successful.