Netband Project - IP Source Guard
From Teknologisk videncenter
<accesscontrol>NetBand</accesscontrol> This page is part of the Netband Project
IP source guard is a security feature that restricts IP traffic on nonrouted, Layer 2 interfaces by filtering traffic based on the DHCP snooping binding database and on manually configured IP source bindings. You can use IP source guard to prevent traffic attacks caused when a host tries to use the IP address of its neighbor.
IP source guard is supported only on Layer 2 ports, including access and trunk ports