ZyXEL Communications P-870HW-I User Manual

P-870HW-I1 User’s Guide

Appendix C NetBIOS Filter Commands

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The following describes the NetBIOS packet filter commands.

NetBIOS (Network Basic Input/Output System) are TCP or UDP broadcast packets that 
enable a computer to connect to and communicate with a LAN. 

For some dial-up services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls.

You can configure NetBIOS filters to do the following:

• Allow or disallow the sending of NetBIOS packets from the LAN to the WAN and from 

the WAN to the LAN.

• Allow or disallow the sending of NetBIOS packets through VPN connections.
• Allow or disallow NetBIOS packets to initiate calls.

This command gives a read-only list of the current NetBIOS filter modes for the ZyXEL 
Device.

Syntax:

sys filter netbios disp

=========== NetBIOS Filter Status ===========
        Between LAN and WAN: Block
        IPSec Packets: Forward
        Trigger Dial: Disabled