ebtables – Linux Ethernet bridge firewalling

The ebtables program is a filtering tool for a Linux-based bridging firewall. It enables transparent filtering of network traffic passing through a Linux bridge. The filtering possibilities are limited to link layer filtering and some basic filtering on higher network layers. Advanced logging, MAC DNAT/SNAT and brouter facilities are also included. The ebtables tool can be combined with the other

[ytoku]

L2のファイアウォールらしい