@(#) $Id: INSTALL,v 1.18 2006/07/28 18:21:09 leres Exp $ (LBL)

If you have not built libpcap, do so first (unless you only want to
build arpsnmp). See the README file in this directory for the ftp
location.

You will need an ANSI C compiler to build the arpwatch package. The
configure script will abort if your compiler is not ANSI compliant. If
this happens, use the GNU C compiler, available via anonymous ftp:

	ftp://ftp.gnu.org/gnu/gcc/

After libpcap has been built (either install it or make sure it's in
../libpcap), edit the BINDEST and MANDEST paths in Makefile.in and
the address defines in addresses.h.in. Then run ./configure (a shell
script).  "configure" will determine your system attributes and
generate an appropriate Makefile and addresses.h from Makefile.in and
addresses.h.in.

Now build arpwatch by running "make". If you only want to build arpsnmp,
and don't have libpcap, type "make arpsnmp"

Note that if you do not already have an arp.dat database file, the
configure script will automatically create an empty one for you.

It's recommended that you run arpwatch with the -d flag at first since
it has the potential of generating a huge number of email messages
when started with an empty database file on a busy subnet. Finally,
remember that startup error messages are syslog'ed, so if arpwatch
won't run, check your syslogs first.

If you want to run arpsnmp, there are two scripts in this distribution
that are of interest. The first is arpfetch and it knows how to
retrieve the arp tables from a cisco using snmpwalk. This script takes
two arguments, the hostname and the snmp community name. The other
script is called bihourly.sh and is suitable as a cron job. To configure
it, you need to create a file called "list" that contains the names of
the hosts to query and "cname" which contains the read/only snmp
community name.

If you get a lot of "bogon" syslog messages, the host system is
probably running with the wrong subnet mask.

Finally, arpwatch and arpsnmp use the resolver(3) library to get most
of its information. This means you probably should either have a local
named running or a correctly configured /etc/resolv.conf (or both).

FILES
-----
CHANGES		- description of differences between releases
FILES		- list of files exported as part of the distribution
INSTALL		- this file
Makefile.in	- compilation rules (input to the configure script)
README		- description of distribution
VERSION		- version of this release
aclocal.m4	- autoconf macros
addresses.h.in	- default email address defines
arp2ethers	- script to convert arp.dat to ethers format
arpfetch	- snmp grabber script (converts snmpwalk output)
arpsnmp.8	- man page
arpsnmp.c	- snmp reader program
arpwatch.8	- man page
arpwatch.c	- main program
arpwatch.h	- config info
bcopy.c		- missing routine
bihourly.sh	- arpsnmp wrapper script
config.guess	- autoconf support
config.sub	- autoconf support
configure	- configure script (run this first)
configure.in	- configure script source
d.awk		- add "-ip" suffix to hosts with decnet addresses
db.c		- database routines
db.h		- global definitions
dns.c		- domain name system routines
dns.h		- global definitions
e.awk		- add "-old" suffix to sorted ethers file
ec.c		- ethernet vendor code routines
ec.h		- global definitions
ethercodes.dat	- ethernet vendor code database
euppertolower.awk - massagevendor support
file.c		- db file i/o routines
file.h		- global definitions
inet.c		- Internet routines
install-sh	- BSD style install script
intoa.c		- inet_ntoa() replacement
lbl/gnuc.h	- gcc macros and defines
lbl/os-*.h	- os dependent defines and prototypes
machdep.c	- machine dependent routines
machdep.h	- machine dependent definitions
massagevendor	- massage oui.txt.html into ethercodes.dat format
massagevendor-old - massage vendor.html into ethercodes.dat format
mkdep		- construct Makefile dependency list
p.awk		- print the first ethernet address seen
report.c	- email report generating routines
report.h	- global definitions
setsignal.c	- os independent signal routines
setsignal.h	- os independent signal prototypes
strerror.c	- missing routine
util.c		- arpwatch and arpsnmp utility routines
util.h		- global definitions