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CONFIG_IP_NF_NETBIOS_NS: NetBIOS name service protocol support (EXPERIMENTAL)

General informations

The Linux kernel configuration item CONFIG_IP_NF_NETBIOS_NS:

Help text

NetBIOS name service requests are sent as broadcast messages from an unprivileged port and responded to with unicast messages to the same port. This make them hard to firewall properly because connection tracking doesn't deal with broadcasts. This helper tracks locally originating NetBIOS name service requests and the corresponding responses. It relies on correct IP address configuration, specifically netmask and broadcast address. When properly configured, the output of "ip address show" should look similar to this:

$ ip -4 address show eth0 4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000 inet brd scope global eth0

To compile it as a module, choose M here. If unsure, say N.



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