CONFIG_BRIDGE_EBT ebtables is an extendable frame filtering system for the Linux Ethernet bridge. Its usage and implementation is very similar to that of iptables. The difference is that ebtables works on the Link Layer, while iptables works on the Network Layer. ebtables can filter all frames that come into contact with a logical bridge device. Apart from filtering, ebtables also allows MAC source and destination alterations (we call it MAC SNAT and MAC DNAT) and also provides functionality for making Linux a brouter. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_T_FILTER The ebtables filter table is used to define frame filtering rules at local input, forwarding and local output. See the man page for ebtables(8). If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_T_NAT The ebtables nat table is used to define rules that alter the MAC source address (MAC SNAT) or the MAC destination address (MAC DNAT). See the man page for ebtables(8). If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_BROUTE The ebtables broute table is used to define rules that decide between bridging and routing frames, giving Linux the functionality of a brouter. See the man page for ebtables(8) and examples on the ebtables website. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_LOG This option adds the log target, that you can use in any rule in any ebtables table. It records the frame header to the syslog. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_IPF This option adds the IP match, which allows basic IP header field filtering. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_ARPF This option adds the ARP match, which allows ARP and RARP header field filtering. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_VLANF This option adds the 802.1Q vlan match, which allows the filtering of 802.1Q vlan fields. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_MARKF This option adds the mark match, which allows matching frames based on the 'nfmark' value in the frame. This can be set by the mark target. This value is the same as the one used in the iptables mark match and target. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_SNAT This option adds the MAC SNAT target, which allows altering the MAC source address of frames. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_DNAT This option adds the MAC DNAT target, which allows altering the MAC destination address of frames. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_REDIRECT This option adds the MAC redirect target, which allows altering the MAC destination address of a frame to that of the device it arrived on. If you want to compile it as a module, say M here and read . If unsure, say `N'. CONFIG_BRIDGE_EBT_MARK_T This option adds the mark target, which allows marking frames by setting the 'nfmark' value in the frame. This value is the same as the one used in the iptables mark match and target. If you want to compile it as a module, say M here and read . If unsure, say `N'.