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Changing the MTU Size, Choose your settings., Use WMM - at t service problems

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N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual - Place wireless devices away from various electromagnetic noise sources, especially those in the 2400-2500 MHz frequency band. Common noise-creating sources are: • Computers and fax machines (no closer than 1 foot) • Copying machines, elevators, and cell phones (no closer than 6 feet) • Microwave ovens (no closer than 10 feet) • Choose your settings. - Use a scanning utility to determine what other wireless networks are operating nearby, and choose an unused channel. - Turn off SSID broadcast, and change the default SSID. Other nearby devices might automatically try to connect to your network several times a second, which can cause significant performance reduction. • Use WMM to improve the performance of voice and video traffic over the wireless link. Changing the MTU Size The Maximum Transmission Unit (MTU) is the largest data packet a network device transmits. When one network device communicates across the Internet with another, the data packets travel through many devices along the way. If any device in the data path has a lower MTU setting than the other devices, the data packets must be split or "fragmented" to accommodate the one with the smallest MTU. The best MTU setting for NETGEAR equipment is often just the default value, and changing the value might fix one problem but cause another. Leave MTU unchanged unless one of these situations occurs: • You have problems connecting to your ISP or other Internet service, and the technical support of either the ISP or NETGEAR recommends changing the MTU setting. These might require an MTU change: - A secure website that won't open, or displays only part of a Web page - Yahoo e-mail - MSN - America Online's DSL service • You use VPN and have severe performance problems. • You used a program to optimize MTU for performance reasons, and now you have connectivity or performance problems. Note: An incorrect MTU setting can cause Internet communication problems such as the inability to access certain Web sites, frames within websites, secure login pages, or FTP or POP servers. 134 | Chapter 8. Advanced Settings (Part 2)

Section	Page
N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2	1
Table of Contents	3
1. Router Internet Setup	7
Using the Setup Manual	7
Logging In to Your N300 Wireless Modem Router	8
Using the Setup Wizard	9
Viewing or Manually Configuring Your ISP Settings	10
Configuring ADSL Settings	14
2. Wireless Settings	15
Planning Your Wireless Network	15
Wireless Placement and Range Guidelines	16
Wireless Security Options	17
Manually Configuring Your Wireless Settings	18
Configuring WEP Wireless Security	20
Configuring WPA, WPA2, or Mixed WPA2 + WPA Wireless Security	22
Using Push 'N' Connect (WPS) to Configure Your Wireless Network	24
Using a WPS Button to Add a WPS Client	24
Using PIN Entry to Add a WPS Client	25
Configuring Advanced WPS Settings	27
Connecting Additional Wireless Client Devices after WPS Setup	27
Adding More WPS Clients	28
Adding Both WPS and Non-WPS Clients	28
Restricting Access to Your N300 Wireless Modem Router	29
Wireless Guest Networks	30
Live Parental Controls	32
3. Security Settings	34
Protecting Access to Your N300 Wireless Modem Router	34
Changing the Built-In Password	35
Restricting Access by MAC Address	35
Blocking Access to Internet Sites	37
Firewall Rules	38
Port Forwarding	41
Adding a Pre-set Port Forwarding Rule	42
Adding a Custom Port Forwarding Rule	42
Port Triggering	43
Blocking Access to Internet Services	44
Scheduling Blocking	45
Viewing Logs of Web Access or Attempted Web Access	46
Configuring Email Alert and Web Access Log Notifications	47
Setting the Time	49
4. Network Maintenance	50
Upgrading the Firmware	50
Manually Check for Firmware Upgrades	51
Viewing N300 Wireless Modem Router Status Information	52
Connection Status	55
Statistics	56
Viewing a List of Attached Devices	57
Managing the Configuration File	57
Backing Up and Restoring the Configuration	58
Erasing the Configuration	58
Running Diagnostic Utilities and Rebooting the Router	58
Enabling Remote Management Access	59
Traffic Meter	61
5. USB Storage	64
USB Drive Requirements	65
File Sharing Scenarios	65
Sharing Photos with Friends and Family	66
Storing Files in a Central Location for Printing	66
Sharing Large Files with Colleagues	66
USB Storage Basic Settings	67
Editing a Network Folder	68
Configuring USB Storage Advanced Settings	69
Creating a Network Folder	71
Media Server Settings	72
Unmounting a USB Drive	72
Specifying Approved USB Devices	72
Connecting to the USB Drive from a Remote Computer	73
Locating the Internet Port IP Address	73
Accessing the Router’s USB Drive Remotely Using FTP	74
Connecting to the USB Drive with Microsoft Network Settings	74
Enabling File and Printer Sharing	74
6. Virtual Private Networking	76
Overview of VPN Configuration	76
Client-to-Gateway VPN Tunnels	77
Gateway-to-Gateway VPN Tunnels	77
Planning a VPN	78
VPN Tunnel Configuration	79
Setting Up a Client-to-Gateway VPN Configuration	80
Step 1: Configure the Client-to-Gateway VPN Tunnel	80
Step 2: Configure the NETGEAR ProSafe VPN Client	83
Setting Up a Gateway-to-Gateway VPN Configuration	90
VPN Tunnel Control	94
Activating a VPN Tunnel	94
Verifying the Status of a VPN Tunnel	97
Deactivating a VPN Tunnel	98
Deleting a VPN Tunnel	100
Setting Up VPN Tunnels in Special Circumstances	100
Using Auto Policy to Configure VPN Tunnels	101
Using Manual Policy to Configure VPN Tunnels	109
7. Advanced Settings (Part 1)	112
Using the LAN Setup Options	112
Using the N300 Wireless Modem Router as a DHCP Server	114
Address Reservation	115
Using a Dynamic DNS Service	116
Configuring the WAN Setup Options	117
Setting Up a Default DMZ Server	119
Setting Up Quality of Service (QoS)	119
Configuring QoS for Internet Access	120
Editing or Deleting an Existing QoS Policy	123
Configuring Static Routes	123
Wireless Repeating (Also Called WDS)	125
Wireless Repeating Function	126
Setting Up the Base Station	127
Setting Up a Repeater Unit	128
8. Advanced Settings (Part 2)	130
Common Connection Types	130
Assessing Your Speed Requirements	131
Optimizing Your Network Bandwidth	132
Optimizing Wireless Performance	133
Changing the MTU Size	134
Universal Plug and Play	135
A. Troubleshooting	137
Quick Tips	137
Troubleshooting with the LEDs	138
Cannot Access the N300 Wireless Modem Router Menu	140
Cannot Access the Internet	141
Checking the Configuration	141
Checking the WAN IP Address	141
Troubleshooting a Network Using the Ping Utility	142
Testing the LAN Path to Your Router	143
Testing the Path from Your Computer to a Remote Device	143
Problems with Date and Time	144
Wireless Connectivity	145
Viewing Available Networks	145
B. Default Configuration and Technical Specifications	147
Restoring the Factory Configuration Settings	147
Using the Restore Factory Settings Button	147
Technical Specifications	150
C. NETGEAR VPN Configuration	151
Configuration Profile	151
Step-by-Step Configuration	152
N300 Wireless Modem Router with FQDN to Gateway B	153
Configuration Profile	153
Step-by-Step Configuration	155
Configuration Summary (Telecommuter Example)	157
Setting Up Client-to-Gateway VPN (Telecommuter Example)	158
Step 1: Configure Gateway A (VPN Router at Main Office)	159
Step 2: Configure Gateway B (VPN Router at Regional Office)	160
Monitoring the VPN Tunnel (Telecommuter Example)	166
Viewing the VPN Router’s VPN Status and Log Information	167
D. Notification of Compliance	168
E. Related Documents	172

Match case Limit results 1 per page

134

Chapter 8.

Advanced Settings (Part 2)

N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual

Place wireless devices away from various electromagnetic noise sources, especially

those in the 2400–2500 MHz frequency band. Common noise-creating sources are:

•

Computers and fax machines (no closer than 1 foot)

•

Copying machines, elevators, and cell phones (no closer than 6 feet)

•

Microwave ovens (no closer than 10 feet)

•

Choose your settings.

Use a scanning utility to determine what other wireless networks are operating

nearby, and choose an unused channel.

Turn off SSID broadcast, and change the default SSID. Other nearby devices might

automatically try to connect to your network several times a second, which can cause

significant performance reduction.

•

Use WMM

to improve the performance of voice and video traffic over the wireless link.

Changing the MTU Size

The Maximum Transmission Unit (MTU) is the largest data packet a network device

transmits. When one network device communicates across the Internet with another, the data

packets travel through many devices along the way. If any device in the data path has a lower

MTU setting than the other devices, the data packets must be split or “fragmented” to

accommodate the one with the smallest MTU.

The best MTU setting for NETGEAR equipment is often just the default value, and changing

the value might fix one problem but cause another. Leave MTU unchanged unless one of

these situations occurs:

•

You have problems connecting to your ISP or other Internet service, and the technical

support of either the ISP or NETGEAR recommends changing the MTU setting. These

might require an MTU change:

A secure website that won’t open, or displays only part of a Web page

Yahoo e-mail

MSN

America Online’s DSL service

•

You use VPN and have severe performance problems.

•

You used a program to optimize MTU for performance reasons, and now you have

connectivity or performance problems.

Note:

An incorrect MTU setting can cause Internet communication

problems such as the inability to access certain Web sites, frames

within websites, secure login pages, or FTP or POP servers.