Arptables
Filtering ARP traffic with Linux arptables
Filtering ARP traffic is easy with the arptables utility. In this article we look at the possibilities of arptables and provides example of using it.
Summary
Most Linux system administrators will be familiar with iptables on Linux. Less known is the arptables utility, which controls filtering arp packets. Installation of arptables The arptables utility is easy to set-up, as the main functionality is already implemented in the Linux kernel. Just install the arptables package on your favorite Linux distribution. Debian / Ubuntu: apt install arptables Red Hat: yum install arptables Configuration example To show the effect of filtering traffic, we will show an example by filtering router traffic and blocking it.