Module 8: Configuring Routing by Using Routing and Remote Access

Overview

• Multimedia: The Role of Routing in the Network

Infrastructure

• Enabling and Configuring the Routing and

Remote Access Service • Configuring Packet Filters

Multimedia: The Role of Routing in the  Network Infrastructure

• The objective of this presentation is to  provide a high­level overview of  routing in the network infrastructure • After this presentation, you will be able

to:  – Describe how routing fits into the

network infrastructure

– Explain the difference between local

and remote routing

– Describe how the Microsoft routing

solution fits into the network  infrastructure

Lesson: Enabling and Configuring the  Routing and Remote Access Service

• Overview of Routers • Defining Routing Interfaces • Using Routing Protocols • Configuring Routing Tables • Why Use the Windows Server 2003 Routing and

Remote Access Service?

• Practice: Enabling and Configuring the Routing

and Remote Access Service

Overview of Routers

A router is a multihomed device that can A router is a multihomed device that can forward packets based on network addressing forward packets based on network addressing

Subnet1 10.10.1.0/24

Subnet2 10.10.2.0/24

Subnet3 10.10.3.0/24

Subnet4 10.10.4.0/24

Router1

Router2

Router3

DEN-CL1

DEN-CL5

DEN-CL4

Subnet5 10.10.5.0/24

Defining Routing Interfaces

A routing interface is a network connection A routing interface is a network connection over which packets are forwarded over which packets are forwarded

Two types of routing Two types of routing interfaces: interfaces: LAN LAN

Demand dial Demand dial

Using Routing Protocols

A routing protocol is a set of messages that A routing protocol is a set of messages that routers use to determine the appropriate path routers use to determine the appropriate path by which to forward data by which to forward data

Is designed for Is designed for OSPF OSPF large to very large to very large networks large networks

Is designed for RIPRIP Is designed for small to medium small to medium networks networks

Uses a link state Uses a link state database database

Uses a routing Uses a routing table table

Is complex to Is complex to configure configure and manage and manage

Is easier to Is easier to configure configure and manage and manage

Does not scale Does not scale well well

Operates Operates efficiently in efficiently in large networks large networks

Configuring Routing Tables

A routing table contains information about the A routing table contains information about the location of the network IDs in the internetwork location of the network IDs in the internetwork

Three types of routing table Three types of routing table entries:Network route entries: Network route Host route Host route

Default route Default route

Why Use Windows Server 2003 Routing  and Remote Access Service?

Windows Server 2003 Routing and Remote Access is a Windows Server 2003 Routing and Remote Access is a service that performs routing as one of its multiple service that performs routing as one of its multiple processes processes

Internal Internal Subnets Subnets

Remote Site Using Remote Site Using Demand Dial Demand Dial

L A N

L A N

Corporate Corporate Network Network

Corporate Corporate Network Network

Remote Site

Remote Access Using VPN Remote Access Using VPN Tunnel Tunnel

Corporate Corporate Network Network

Practice: Enabling and Configuring the  Routing and Remote Access Service

In this practice, you will:

Configure Routing and Remote Access for LAN routing

Add a static routing table entry

Configure a routing protocol

Lesson: Configuring Packet Filters

• Using Packet Filtering • How Packet Filters Are Applied • Practice: Configuring Packet Filters

Using Packet Filtering

Packet filtering prevents certain types of packets Packet filtering prevents certain types of packets from being sent or received across a router from being sent or received across a router

Inbound Filter Inbound Filter

Route Route r r

Outbound Filter Outbound Filter

Use packet filtering to: Use packet filtering to:

Prevent access by unauthorized computers Prevent access by unauthorized computers

Prevent access to resources Prevent access to resources

Improve network performance Improve network performance

How Packet Filters Are Applied

Packe Packe t t

Route Route r r

Inbound Exclusion Inbound Exclusion Filter Filter

Example

Example

Any

192.168.0.48

Component Source network

Component Source network

192.168.0.32

192.168.0.32

Destination network

Destination network

UDP

UDP

Protocol

Protocol

Action: Drop Action: Drop

How filters are applied: How filters are applied:

AND is used within a filter AND is used within a filter

OR is used between filters OR is used between filters

Practice: Configuring Packet Filters

In this practice, you will configure packet filters

Lab: Configuring Routing by Using Routing  and Remote Access

In this lab, you will:

Configure Routing and Remote Access

Plan a routing topology