Zyxel-communications Internet Security Appliance ZyWALL5UTM 4.0 Uživatelský manuál stáhnout pdf (Strana 758)

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ZyWALL 5/35/70 Series User’s Guide

Appendix O NetBIOS Filter Commands 758

APPENDIX O

NetBIOS Filter Commands

The following describes the NetBIOS packet filter commands. See Appendix M on page 750

for information on the command structure.

Introduction

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 from the LAN to the DMZ and from

the DMZ to the LAN.

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

the DMZ to the WAN.

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

• Allow or disallow NetBIOS packets to initiate calls.

Syntax:

sys filter netbios disp

Display NetBIOS Filter Settings

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

NetBIOS Display Filter Settings Command Example

=========== NetBIOS Filter Status ===========

Between LAN and WAN: Block

Between LAN and DMZ: Block

Between WAN and DMZ: Block

IPSec Packets: Forward

Trigger Dial: Disabled

1 2 ... 753 754 755 756 757 758 759 760 761 762 763 ... 802 803

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