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Virtual Private Networking

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8. Virtual Private Networking 8 Setting up secure encrypted communications This chapter describes how to use the virtual private networking (VPN) features of the modem router. VPN communications paths are called tunnels. VPN tunnels provide secure, encrypted communications between your local network and a remote network or computer. See Appendix B, VPN Configuration. This chapter is organized as follows: • Overview of VPN Configuration • Plan a VPN • VPN Tunnel Configuration • Set Up a Client-to-Gateway VPN Configuration • Set Up a Gateway-to-Gateway VPN Configuration • VPN Tunnel Control • Set Up VPN Tunnels in Special Circumstances 99

Section	Page
N600 Wireless Dual Band Gigabit VDSL2 Modem Router DGND3800B	1
Contents	3
1. Hardware Setup	7
Unpack Your New Router	8
Hardware Features	9
Front Panel	9
Back Panel	11
Label	12
Position Your Modem Router	12
ADSL Microfilters	13
One-Line ADSL Microfilter (Not Included)	13
Two-Line ADSL Microfilter (Included)	13
Summary	14
Cable Your Modem Router	14
Verify the Cabling	15
2. Router Internet Setup	16
Router Setup Preparation	17
Use Standard TCP/IP Properties for DHCP	17
Replace an Existing Router	17
Adapters and Security Settings	17
Gather ISP Information	17
Log In to the N600 Modem Router	18
Upgrade Router Firmware	19
Router Interface	20
Setup Wizard	21
Manual Setup (Basic Settings)	22
Basic Setting Screen Fields	23
ADSL Settings	25
Unsuccessful Internet Connection	27
Change Password and Login Time-Out	27
Log Out Manually	28
Types of Logins	28
3. Wireless Settings	29
Wireless Adapter Compatibility	30
Preset Security	30
Wireless Security Basics	31
Turn Off Wireless Connectivity	31
Disable SSID Broadcast	31
Restrict Access by MAC Address	31
Wireless Security Options	32
Add Clients (Devices) to Your Network	33
Manual Method	33
Wi-Fi Protected Setup (WPS) Method	33
Wireless Settings	35
4. Content Filtering	39
Keyword Blocking of HTTP Traffic	40
Delete a Keyword or Domain	40
Specify a Trusted Computer	40
Firewall Rules to Control Network Access	41
Remote Computer Access Basics	41
Port Triggering to Open Incoming Ports	42
Port Forwarding to Permit External Host Communications	44
How Port Forwarding Differs from Port Triggering	45
Configure Port Forwarding to Local Servers	45
Configure Port Triggering	47
Set the Time Zone	49
Schedule Firewall Services	50
Email Logs and Alerts	51
Log the Network Activity	52
5. Network Maintenance	54
Upgrade the Router Firmware	55
Automatic Firmware Checking Off	55
Automatic Firmware Checking On	56
Manually Check for Firmware Upgrades	57
Manage Configuration File	58
Back Up	58
Restore	58
Erase	58
View Router Status	59
Show Statistics Button	61
Connection Status	62
View Attached Devices	62
Run Diagnostic Utilities	63
6. USB Storage	64
USB Drive Requirements	65
ReadySHARE Access	65
File-Sharing Scenarios	66
USB Storage Basic Settings	67
Edit a Network Folder	69
USB Storage Advanced Settings	70
Create a Network Folder	71
Safely Remove USB Drive	72
Media Server Settings	72
Approved USB Devices (Advanced USB Settings)	73
Connect to the USB Drive from a Remote Computer	74
Connect to the USB Drive with Microsoft Network Settings	74
Enabling File and Printer Sharing	74
7. Advanced Settings	76
WAN Setup	77
WAN Preference	77
Disable Port Scan and DOS Protection	77
Default DMZ Server	77
Respond to Ping on Internet Port	78
MTU Size (in bytes)	78
NAT Filtering	79
Disable SIP ALG	79
Dynamic DNS	79
LAN Setup	80
Set Up Quality of Service (QoS)	82
Configure QoS for Internet Access	83
Advanced Wireless Settings	84
Wireless Advanced Settings	84
WPS Settings	85
Wireless Repeating Networks	87
Set Up a Point-to-Point Bridge	88
Set Up a Multi-Point Bridge	90
Repeater with Wireless Client Association	91
Remote Management	93
Static Routes	94
Static Route Example	94
Static Routes	95
Universal Plug and Play	96
Traffic Meter	97
8. Virtual Private Networking	99
Overview of VPN Configuration	100
Client-to-Gateway VPN Tunnels	100
Gateway-to-Gateway VPN Tunnels	100
Plan a VPN	101
VPN Tunnel Configuration	102
Set Up a Client-to-Gateway VPN Configuration	103
Step 1: Configure the Client-to-Gateway VPN Tunnel	103
Step 2: Configure the NETGEAR ProSafe VPN Client	106
Set Up a Gateway-to-Gateway VPN Configuration	114
VPN Tunnel Control	118
Activate a VPN Tunnel	118
Verify the Status of a VPN Tunnel	120
Set Up VPN Tunnels in Special Circumstances	123
Use Auto Policy to Configure VPN Tunnels	124
Use Manual Policy to Configure VPN Tunnels	131
9. Troubleshooting	134
Troubleshooting with the LEDs	135
Power LED Is Off	135
Power LED Is Red	136
LAN LED Is Off	136
Wireless LEDs Are Off	136
DSL or Internet LED Is Off	136
No ISP Connection	137
ADSL Link	137
Internet LED Is Red	138
Cannot Obtain an Internet IP Address	138
Debug PPPoE or PPPoA	139
Cannot Load an Internet Web Page	139
TCP/IP Network Not Responding	140
Test the LAN Path to Your Modem Router	140
Test the Path from Your Computer to a Remote Device	141
Cannot Log In	141
Changes Not Saved	142
Firmware Needs to Be Reloaded	142
Incorrect Date or Time	143
A. Supplemental Information	144
Factory Settings	145
Technical Specifications	147
B. VPN Configuration	148
Configuration Profile	148
Step-by-Step Configuration	149
Modem Router with FQDN to Gateway B	151
Configuration Profile	151
Step-by-Step Configuration	152
Configuration Summary (Telecommuter Example)	155
Set Up Client-to-Gateway VPN (Telecommuter Example)	156
Step 1: Configure Gateway A (VPN Router at Main Office)	157
Step 2: Configure Gateway B (VPN Router at Regional Office)	158
Monitoring the VPN Tunnel (Telecommuter Example)	164
View the VPN Router’s VPN Status and Log Information	165
C. Notification of Compliance	166