3Com OfficeConnect (3CREVF100-73-ME) Firewall

3Com® OfficeConnect® Gigabit VPN Firewall (3CREVF100-73) User Guide

ii

OfficeConnect VPN Firewall User’s Manual Introduction

Table of Contents 1 Introduction .......................... 12

2

1.1

OfficeConnect Gigabit VPN Firewall ............................ 12

1.2

System Requirements ................................................... 12

1.3

Using this Document ..................................................... 12 1.3.1

Notational conventions ....................................... 12

1.3.2

Typographical conventions .................................. 2

1.3.3

Special messages ................................................. 2

Getting to Know the OfficeConnect Gigabit VPN

3

2.4.1.3

Defense against DoS Attacks.................. 5

2.4.1.4

Application Command Filtering ............... 5

2.4.1.5

Application Level Gateway (ALG) ........... 6

2.4.1.6

Local Content Filtering ............................. 6

2.4.1.7

Log and Alerts........................................... 6

2.4.2

VPN ........................................................................ 6

2.4.3

WAN Failover & Load Balancing ......................... 7

2.4.4

QoS and Bandwidth Management ...................... 7

2.4.5

Virtual LAN Interfaces (VLAN) ............................. 7

Quick Start Guide .................. 9 3.1

Part 1 — Connecting the Hardware ............................... 9

Firewall .................................. 3

3.1.1

Step 1. Connect an ADSL or a cable

2.1

Parts List........................................................................... 3

3.1.2

Step 2. Connect computers or a LAN.................. 9

2.2

Front Panel ....................................................................... 3

3.1.3

Step 3. Attach the power adapter. ....................... 9

2.3

Rear Panel ....................................................................... 3

3.1.4

Step 4. Turn on the OfficeConnect Gigabit

2.4

Major Features ................................................................. 4

modem. .................................................................. 9

VPN Firewall, the ADSL or cable modem and power up your computers. .......................... 10

2.4.1

Firewall Features................................................... 4

2.4.1.1

Address Sharing and Management ........ 4

2.4.1.1

ACL (Access Control List)........................ 4

2.4.1.2

Stateful Packet Inspection ....................... 5

3.2

Part 2 — Rack Mounting Instructions........................... 10

3.3

Part 3 — Configuring Your Computers ........................ 11 3.3.1

Before you begin ................................................. 12

3.3.2

Windows® XP PCs: ............................................ 12

OfficeConnect VPN Firewall User’s Manual

Chapter 1.Introduction

3.4

3.3.3

Windows® 2000 PCs: ........................................ 12

5.2

3.3.4

Windows® 95, 98, and Me PCs......................... 13

5.2.1

What is DHCP? ................................................... 26

3.3.5

Windows® NT 4.0 workstations: ........................ 13

5.2.2

Why use DHCP? ................................................. 27

3.3.6

Assigning static IP addresses to your PCs ....... 14

5.2.3

Configuring DHCP Server .................................. 27

5.2.4

Viewing Current DHCP Address

Part 4 — Quick Configuration of the

DHCP (Dynamic Host Control Protocol) ...................... 26

OfficeConnect Gigabit VPN Firewall ............................ 14 3.4.1

Assignments ........................................................ 29

Setting Up the OfficeConnect Gigabit VPN

5.3

Firewall ................................................................. 14

4

3.4.2

Testing Your Setup ............................................. 18

3.4.3

Default Router Settings....................................... 18 5.4

Configuration Manager ........ 21 Log into Configuration Manager ................................... 21

4.2

Functional Layout .......................................................... 21 4.2.1