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Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports
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WAN Port Connection Status
...........................................................................
8-18
Dynamic DNS Status
.......................................................................................
8-19
Internet Traffic Information
...............................................................................
8-19
LAN Ports and Attached Devices
...........................................................................
8-20
Known PCs and Devices
.................................................................................
8-20
DHCP Log
.......................................................................................................
8-22
Port Triggering Status
......................................................................................
8-22
Firewall
...................................................................................................................
8-23
VPN Tunnels
..........................................................................................................
8-26
SNMP
.....................................................................................................................
8-27
Diagnostics
.............................................................................................................
8-27
Configuration File Management
...................................................................................
8-29
Restoring and Backing Up the Configuration
.........................................................
8-30
Upgrading the Firewall Software
............................................................................
8-30
Erasing the Configuration (Factory Defaults Reset)
...............................................
8-31
Chapter 9
Troubleshooting
Basic Functioning
...........................................................................................................
9-1
Power LED Not On
...................................................................................................
9-1
LEDs Never Turn Off
................................................................................................
9-2
LAN or Internet Port LEDs Not On
...........................................................................
9-2
Troubleshooting the Web Configuration Interface
..........................................................
9-3
Troubleshooting the ISP Connection
..............................................................................
9-4
Troubleshooting a TCP/IP Network Using a Ping Utility
.................................................
9-5
Testing the LAN Path to Your Firewall
......................................................................
9-5
Testing the Path from Your PC to a Remote Device
................................................
9-6
Restoring the Default Configuration and Password
........................................................
9-7
Problems with Date and Time
.........................................................................................
9-7
Appendix A
Technical Specifications
Appendix B
Network, Routing, Firewall, and Basics
Related Publications
......................................................................................................
B-1
Basic Router Concepts
..................................................................................................
B-1
What is a Router?
...................................................................................................
B-2
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Routing Information Protocol
...................................................................................
B-2
IP Addresses and the Internet
.......................................................................................
B-2
Netmask
..................................................................................................................
B-4
Subnet Addressing
..................................................................................................
B-5
Private IP Addresses
...............................................................................................
B-7
Single IP Address Operation Using NAT
.......................................................................
B-8
MAC Addresses and Address Resolution Protocol
.................................................
B-9
Related Documents
.................................................................................................
B-9
Domain Name Server
............................................................................................
B-10
IP Configuration by DHCP
...........................................................................................
B-10
Internet Security and Firewalls
....................................................................................
B-10
What is a Firewall?
.................................................................................................
B-11
Stateful Packet Inspection
...............................................................................
B-11
Denial of Service Attack
..................................................................................
B-11
Ethernet Cabling
...........................................................................................................
B-11
Category 5 Cable Quality
......................................................................................
B-12
Inside Twisted Pair Cables
....................................................................................
B-13
Uplink Switches, Crossover Cables, and MDI/MDIX Switching
............................
B-14
Appendix C
Preparing Your Network
Preparing Your Computers for TCP/IP Networking
.......................................................
C-1
Configuring Windows 95, 98, and Me for TCP/IP Networking
.......................................
C-2
Install or Verify Windows Networking Components
.................................................
C-2
Enabling DHCP to Automatically Configure TCP/IP Settings
.................................
C-4
Selecting Windows’ Internet Access Method
..........................................................
C-6
Verifying TCP/IP Properties
....................................................................................
C-6
Configuring Windows NT4, 2000 or XP for IP Networking
............................................
C-7
Install or Verify Windows Networking Components
.................................................
C-7
Enabling DHCP to Automatically Configure TCP/IP Settings
.................................
C-8
DHCP Configuration of TCP/IP in Windows XP
.....................................................
C-8
DHCP Configuration of TCP/IP in Windows 2000
................................................
C-10
DHCP Configuration of TCP/IP in Windows NT4
..................................................
C-13
Verifying TCP/IP Properties for Windows XP, 2000, and NT4
..............................
C-15
Configuring the Macintosh for TCP/IP Networking
......................................................
C-16
MacOS 8.6 or 9.x
..................................................................................................
C-16
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MacOS X
...............................................................................................................
C-16
Verifying TCP/IP Properties for Macintosh Computers
.........................................
C-17
Verifying the Readiness of Your Internet Account
.......................................................
C-18
Are Login Protocols Used?
...................................................................................
C-18
What Is Your Configuration Information?
..............................................................
C-18
Obtaining ISP Configuration Information for Windows Computers
.......................
C-19
Obtaining ISP Configuration Information for Macintosh Computers
.....................
C-20
Restarting the Network
................................................................................................
C-21
Appendix D
Virtual Private Networking
What is a VPN?
.............................................................................................................
D-1
What Is IPSec and How Does It Work?
.........................................................................
D-2
IPSec Security Features
.........................................................................................
D-2
IPSec Components
.................................................................................................
D-2
Encapsulating Security Payload (ESP)
...................................................................
D-3
Authentication Header (AH)
....................................................................................
D-4
IKE Security Association
.........................................................................................
D-4
Mode
.................................................................................................................
D-5
Key Management
....................................................................................................
D-6
Understand the Process Before You Begin
...................................................................
D-6
VPN Process Overview
.................................................................................................
D-7
Network Interfaces and Addresses
.........................................................................
D-7
Interface Addressing
.........................................................................................
D-7
Firewalls
...........................................................................................................
D-8
Setting Up a VPN Tunnel Between Gateways
........................................................
D-8
VPNC IKE Security Parameters
..................................................................................
D-10
VPNC IKE Phase I Parameters
.............................................................................
D-10
VPNC IKE Phase II Parameters
............................................................................
D-11
Testing and Troubleshooting
........................................................................................
D-11
Additional Reading
......................................................................................................
D-11
Glossary
List of Glossary Terms
........................................................................................
Glossary-1
Numeric
..............................................................................................................
Glossary-1
A
.........................................................................................................................
Glossary-2
B
.........................................................................................................................
Glossary-2
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C
.........................................................................................................................
Glossary-3
D
.........................................................................................................................
Glossary-3
E
.........................................................................................................................
Glossary-4
G
.........................................................................................................................
Glossary-5
I
...........................................................................................................................
Glossary-5
L
..........................................................................................................................
Glossary-6
M
.........................................................................................................................
Glossary-7
P
.........................................................................................................................
Glossary-8
Q
.........................................................................................................................
Glossary-9
R
.........................................................................................................................
Glossary-9
S
.........................................................................................................................
Glossary-9
T
.......................................................................................................................
Glossary-10
U
.......................................................................................................................
Glossary-10
W
......................................................................................................................
Glossary-10
Page 15 / 238
About This Manual
1-1
202-10085-01, March 2005
Chapter 1
About This Manual
This chapter describes the intended audience, scope, conventions, and formats of this manual.
Audience, Scope, Conventions, and Formats
This reference manual assumes that the reader has basic to intermediate computer and Internet
skills. However, basic computer network, Internet, firewall, and VPN technologies tutorial
information is provided in the Appendices and on the Netgear website.
This guide uses the following typographical conventions:
This guide uses the following formats to highlight special messages:
This manual is written for the FVS124G VPN Firewall according to these specifications.:
Table 1-1.
Typographical Conventions
italics
Emphasis, books, CDs, URL names
bold
User input
fixed
Screen text, file and server names, extensions, commands, IP addresses
Note:
This format is used to highlight information of importance or special interest.
Table 1-2.
Manual Scope
Product Version
FVS124G ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN
Ports
Manual Publication Date
March 2005
Note:
Product updates are available on the NETGEAR, Inc. Web site at
.

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