Source: arpwatch Section: admin Priority: optional Maintainer: Debian Security Tools Uploaders: Lukas Schwaighofer Build-Depends: debhelper-compat (= 13), libpcap0.8-dev, Standards-Version: 4.7.0 Rules-Requires-Root: no Homepage: https://ee.lbl.gov/ Vcs-Git: https://salsa.debian.org/pkg-security-team/arpwatch.git Vcs-Browser: https://salsa.debian.org/pkg-security-team/arpwatch Package: arpwatch Architecture: any Depends: adduser, gawk, ${misc:Depends}, ${shlibs:Depends}, Pre-Depends: ${misc:Pre-Depends} Recommends: ieee-data, Description: Ethernet/FDDI station activity monitor Arpwatch maintains a database of Ethernet MAC addresses seen on the network, with their associated IP pairs. Alerts the system administrator via e-mail if any change happens, such as new station/activity, flip-flops, changed and re-used old addresses. . If you want to maintain a list authorized MAC addresses manually, take a look at the arpalert package which may fit your needs better.