Zyxel P-870HN-51b Router Manual PDF (Setup & Configuration Guide)

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P-870HN-51b User’s Guide

181

C

HAPTER

13

Policy Forwarding

13.1

Overview

Traditionally, routing is based on the destination address only and the Device

takes the shortest path to forward a packet. Policy forwarding allows the Device to

override the default routing behavior and alter the packet forwarding based on the

policy defined by the network administrator. Policy-based routing is applied to

outgoing packets, prior to the normal routing.

You can use source-based policy forwarding to direct traffic from different users

through different connections or distribute traffic among multiple paths for load

sharing.

13.1.1

What You Can Do in this Chapter

The

Policy Forwarding

screens let you view and configure routing policies on the

Device (

Section 13.2 on page 181

).

13.2

The Policy Forwarding Screen

Click

Advanced > Policy Forwarding

to open the

Policy Forwarding

screen.

Figure 94

Advanced > Policy Forwarding

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The following table describes the labels in this screen.

13.2.1

Policy Forwarding Setup

Click the

Add

button in the

Policy Forwarding

screen. Use this screen to

configure the required information for a policy route.

Figure 95

Policy Forwarding: Add

The following table describes the labels in this screen.

Table 61

Advanced > Policy Forwarding

LABEL

DESCRIPTION

Policy Name

This is the name of the rule.

SourceIP

This is the source IP address.

Protocol

This is the IP protocol.

SourcePort

This is the source port number.

SourceMAC

This is the source MAC address.

Interface

This is the WAN interface through which the traffic is routed.

Remove

Click the icon to remove a rule from the Device. A window displays asking

you to confirm that you want to delete the rule.

Add

Click this to create a new rule.

Table 62

Policy Forwarding: Add

LABEL

DESCRIPTION

Policy Name

Enter a descriptive name of up to 16 printable English keyboard

characters, including spaces.

Source IP

Address

Enter the source IP address.

Protocol

Select the IP protocol (

TCP

or

UDP

).

Source Port

Enter the source port number.

Use Interface

Select a WAN interface through which the traffic is sent. You must have

the WAN interface(s) already configured in the

WAN

screens.

Back

Click

Back

to return to the previous screen without saving.

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Apply

Click

Apply

to save your changes back to the Device.

Cancel

Click

Cancel

to begin configuring this screen afresh.

Table 62

Policy Forwarding: Add

LABEL

DESCRIPTION

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HAPTER

14

DNS Route

14.1

Overview

DNS policy routing lets you forward DNS queries for specific domains to a specific

WAN interface. So for example, the ISP can configure the Device with a separate

WAN interface that connects to a private ISP network that uses private domain

names in providing services. They could configure DNS policy routes to forward

DNS queries for those domain names through the WAN interface connected to that

private ISP network.

14.1.1

What You Can Do in this Chapter

The

DNS Route

screens let you view and configure DNS routing policies on the

Device (

Section 14.2 on page 185

).

14.2

The DNS Route Screen

Click

Advanced > DNS Route

to open the

DNS Route

screen.

Figure 96

Advanced > DNS Route

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