Paradyne 1740 SHDSL manual Add a Packet Filter entry

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1740 SHDSL 2/4-Wire Router User’s Guide

CHAPTER 6 Packet Filter

Packet filter, a firewall security measure, examines incoming and outgoing packet headers (IP address, port number, and so on) on the network and determines whether to forward the packets based on user- defined rules (deny, accept, and count).

The SHDSL router provides packet filter and stateful packet inspection. It has denial of service protection against attacks such as ICMP Flood, Ping of Death, IP spoofing, Port Scans, Land Attacks, Tear Drop Attacks, IP Source Route and WinNuke Attacks.

To access the packet filter functions, select Packet Filter from the advanced menu. The screen will display as below, showing a list of the currently configured filter entries.

6.1.1Add a Packet Filter entry

To add a Packet Filter, complete the following steps:

STEP 1: Click on the Add button, the Packet Filter Add screen will appear.

STEP 2: Enter values for the parameters (explained below).

STEP 3: Click on the Apply button at the bottom of the page.

Priority

You can enter a number here to assign the priority of a filter, in case there are overlapping rules. The lower the number the higher its priority.

Protocol

Select from TCP/UDP/ICMP/IP.

Source IP

Source IP of a packet you wish to filter.

Source Mask

Source Mask of a packet.

Source Port

Source Port of a packet you wish to filter.

1740-A2-GB20-00

July 2004

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Contents Shdsl July 1740-A2-GB20-00 July Table of Contents Chapter Application Example Appendix a Specifications Application OverviewColor Mode Function LED IndicatorsPreparing for Hardware Installation InstallationAC power adapter Four-wire 8P8C straight-through RJ45 cableRear-panel Connections Power connectionDSL connection Ethernet connectionLogin Quick InstallationJuly Web Page Layout Monitoring the Shdsl Line WAN Interface Configuration VCI Bridge Mode Service for One Fixed IP Address1740-A2-GB20-00 July Router Mode Service for Five Static IP Addresses 1740-A2-GB20-00 July July 1740-A2-GB20-00 July PPPoE Shdsl 2/4-Wire Router User’s Guide PPPoA 1740-A2-GB20-00 July Password Setup Spanning Tree Protocol Setting the BridgeStatic Bridging Write System Configurations Load Factory Default Values LAN Interface Setting up WAN and LAN InterfacesConfiguring the WAN Interface VC Data Flow Control Setting up an ISP Snmp Enable SnmpDisable Snmp Add a Packet Filter entry Packet FilterDelete a Packet Filter entry Enable/Disable Packet FilterStatic Route RoutingAdd ModifySet Up the RIP function 1740-A2-GB20-00 July Displaying the Routing Table NAT Multiple to One One to One NAT Multi-NAT 1740-A2-GB20-00 July Virtual Server Dhcp Server DhcpDhcp Relay DNS Proxy Igmp Click Apply to submit the settings Parameters and buttons VlanSoftware Upgrade and Configuration Backup /Restoration Maintenance and DiagnosticsJuly 1740-A2-GB20-00 July OAM Loopback Ping Performance Monitoring 1740-A2-GB20-00 July Interface Adding the Static Route Web Application ExampleJuly Line Port RJ45 Pin AssignmentsVT100 Compatible Terminal Console AccessConsole Port Cable Keyboard Operations July Motoring the Shdsl Line Status Disable the Web Browser Retrieve the Factory Default SettingsSave the Configurations July Appendix a Specifications Network functions Power SupplyEnvironmental Conditions