Package: arpwatch

"arpwatch" package binaries on CentOS:

/usr/sbin/arp2ethers /usr/sbin/arpsnmp /usr/sbin/arpwatch /usr/sbin/massagevendor

You may install this package on CentOS with yum install arpwatch

"arpwatch" package binaries on Debian:

/usr/sbin/arp2ethers /usr/sbin/arpfetch /usr/sbin/arpsnmp /usr/sbin/arpwatch /usr/sbin/bihourly /usr/sbin/dmassagevendor /usr/sbin/massagevendor

You may install this package on Debian with apt-get install arpwatch