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Responding to a Ping on the Internet (WAN) Port, Setting the MTU Size, Disabling IGMP Proxying

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Wireless-N 150 Router WNR612v2 User Manual To assign a computer or server to be a default DMZ server: 1. Select the Default DMZ Server check box. 2. In the Default DMZ Server fields, enter the IP address for that computer or server. 3. Click Apply. Responding to a Ping on the Internet (WAN) Port If you want the router to respond to a ping from the Internet, select the Respond to Ping on Internet Port check box. This should be used only as a diagnostic tool, since it allows your router to be discovered by Internet scanners. Do not select this check box unless you have a specific reason to do so, such as when troubleshooting your connection. Setting the MTU Size The normal MTU value for most Ethernet networks is 1500 bytes, 1492 bytes for PPPoE connections, or 1450 for PPTP connections. For some ISPs, you might need to reduce the MTU size, but this is rarely required and should not be done unless you are sure it is necessary for your ISP connection. To change the MTU size: 1. In the MTU Size field, enter a new size between 64 and 1500. 2. Click Apply to save the new configuration. Disabling IGMP Proxying The IGMP Proxying function lets a LAN PC receive the multicast traffic it is interested in from the Internet. If you do not need this function, you can click the Disable IGMP Proxying check box to disable this function. Disabling SIP ALG Some SIP applications have their own way to work around the NAT firewall issue, and the SIP ALG would conflict with those solutions. In most cases, you do not have to disable the SIP ALG. However, if your SIP applications cannot work with the router, you can disable the SIP ALG and try the applications again. To disable SIP ALG, click the Disable SIP ALG check box. Enabling IPv6 Pass-Through IPv6 pass-through is disabled by default. If you have IPv6-capable devices in your configuration and would like to use those devices instead of IPv4, you can click the Enable IPv6 Pass-Through check box to enable the IPv6 Pass-Through function. 40 | Chapter 4: Customizing Your Network

Section	Page
Wireless-N 150 Router WNR612v2	1
Table of Contents	3
1. Configuring Your Internet Connection	6
Logging In to Your Wireless Router	7
Selecting a Language for Your Screen Display	8
Using the Setup Wizard	9
Viewing or Manually Configuring Your ISP Settings	9
2. Wireless Configuration	12
Planning Your Wireless Network	13
Wireless Placement and Range Guidelines	13
Wireless Security Options	14
Manually Configuring Your Wireless Settings	14
Configuring WEP	16
Configuring WPA, WPA2, or WPA + WPA2	18
Using Push 'N' Connect (WPS) to Configure Your Wireless Network	18
WPS Button	19
WPS PIN Entry	20
Adding Wireless Computers That Do Not Support WPS	21
Wireless Guest Networks	21
Advanced Wireless Settings	22
Advanced WPS Settings	23
Restricting Wireless Access by MAC Address	24
3. Protecting Your Network	26
Protecting Access to Your Wireless Router	27
Changing the Administrator Password	27
Blocking Access to Internet Sites	27
Blocking Access to Internet Services	28
Blocking Services by IP Address Range	29
Scheduling Blocking	30
Viewing Logs of Web Access or Attempted Web Access	30
Email Alerts and Web Access Log Notifications	31
4. Customizing Your Network	33
Using the LAN IP Setup Options	34
Configuring a Device Name	34
Configuring LAN TCP/IP Setup Parameters	34
Using the Router as a DHCP Server	35
Using Address Reservation	36
Using a Dynamic DNS Service	37
Configuring the WAN Setup Options	38
Disabling Port Scan and DOS Protection	39
Setting Up a Default DMZ Server	39
Responding to a Ping on the Internet (WAN) Port	40
Setting the MTU Size	40
Disabling IGMP Proxying	40
Disabling SIP ALG	40
Enabling IPv6 Pass-Through	40
Configuring NAT Filtering	41
Configuring Static Routes	41
5. Maintenance	43
Upgrading the Firmware	44
Manually Checking for Firmware Upgrades	45
Backing Up, Restoring, and Erasing Your Settings	45
Backing Up the Configuration to a File	46
Restoring the Configuration from a File	46
Erasing the Configuration	46
Viewing Wireless Router Status Information	47
Viewing Statistics	48
Viewing the Connection Status	49
Viewing a List of Attached Devices	50
Enabling Remote Management Access	51
Traffic Meter	52
6. Fine-Tuning Your Network	53
Allowing Inbound Connections to Your Network	54
How Your Computer Accesses the Internet through Your Router	54
How Port Triggering Changes the Communication Process	55
How Port Forwarding Changes the Communication Process	56
How Port Forwarding Differs from Port Triggering	57
Configuring Port Forwarding to Local Servers	58
Adding a Custom Service	58
Editing or Deleting a Port Forwarding Entry	59
Configuring Port Triggering	60
Using Universal Plug and Play	62
Changing the MTU Size	63
Quality of Service	65
Using WMM QoS for Wireless Multimedia Applications	65
Configuring QoS for Internet Access	65
Overview of Home and Small Office Networking Technologies	69
Assessing Your Speed Requirements	70
7. Troubleshooting	72
Quick Tips	73
Troubleshooting Basic Functions	74
Login Problems	75
Checking the Internet Service Connection	75
Obtaining an Internet IP Address	75
Troubleshooting PPPoE	76
Troubleshooting Internet Browsing	77
Troubleshooting Your Network Using the Ping Utility	77
Testing the LAN Path to Your Router	77
Testing the Path from Your Computer to a Remote Device	78
Problems with Date and Time	79
Problems with Wireless Adapter Connections	79
Restoring the Default Configuration and Password	80
A. Factory Default Settings and Technical Specifications	82
Factory Default Settings	82
General Specifications	84
B. Related Documents	85
C. Notification of Compliance	86

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Chapter 4:

Customizing Your Network

Wireless-N 150 Router WNR612v2 User Manual

To assign a computer or server to be a default DMZ server:

Select the

Default DMZ Server

check box.

In the

Default DMZ Server

fields, enter the IP address for that computer or server.

Click

Apply

Responding to a Ping on the Internet (WAN) Port

If you want the router to respond to a ping from the Internet, select the

Respond to Ping on

Internet Port

check box. This should be used only as a diagnostic tool, since it allows your

router to be discovered by Internet scanners. Do not select this check box unless you have a

specific reason to do so, such as when troubleshooting your connection.

Setting the MTU Size

The normal MTU value for most Ethernet networks is 1500 bytes, 1492 bytes for PPPoE

connections, or 1450 for PPTP connections. For some ISPs, you might need to reduce the

MTU size, but this is rarely required and should not be done unless you are sure it is

necessary for your ISP connection.

To change the MTU size:

In the

MTU Size

field, enter a new size between 64 and 1500.

Click

Apply

to save the new configuration.

Disabling IGMP Proxying

The IGMP Proxying function lets a LAN PC receive the multicast traffic it is interested in from

the Internet. If you do not need this function, you can click the Disable IGMP Proxying check

box to disable this function.

Disabling SIP ALG

Some SIP applications have their own way to work around the NAT firewall issue, and the

SIP ALG would conflict with those solutions. In most cases, you do not have to disable the

SIP ALG. However, if your SIP applications cannot work with the router, you can disable the

SIP ALG and try the applications again. To disable SIP ALG, click the

Disable SIP ALG

check

box.

Enabling IPv6 Pass-Through

IPv6 pass-through is disabled by default. If you have IPv6-capable devices in your

configuration and would like to use those devices instead of IPv4, you can click the Enable

IPv6 Pass-Through check box to enable the IPv6 Pass-Through function.