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Application Example: Port Triggering for Internet Relay Chat

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Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000 The BASIC Home page displays. 5. Select ADVANCED > Advanced Setup > Port Forwarding / Port Triggering. The Port Forwarding / Port Triggering page displays. 6. Select the Port Triggering radio button. The port triggering settings display. 7. Select the Disable Port Triggering check box. If this check box is selected, the modem router does not apply port triggering rules even if you specified them. 8. Click the Apply button. Your settings are saved. Application Example: Port Triggering for Internet Relay Chat Some application servers, such as FTP and IRC servers, send replies to multiple port numbers. Using port triggering, you can tell the modem router to open more incoming ports when a particular outgoing port starts a session. An example is Internet Relay Chat (IRC). Your computer connects to an IRC server at destination port 6667.The IRC server not only responds to your originating source port but also sends an "identify" message to your computer on port 113. Using port triggering, you can tell the modem router, "When you initiate a session with destination port 6667, you must also allow incoming traffic on port 113 to reach the originating computer." The following sequence shows the effects of this port triggering rule: 1. You open an IRC client program to start a chat session on your computer. 2. Your IRC client composes a request message to an IRC server using a destination port number of 6667, the standard port number for an IRC server process. Your computer then sends this request message to your modem router. 3. Your modem router creates an entry in its internal session table describing this communication session between your computer and the IRC server. Your modem router stores the original information, performs Network Address Translation (NAT) on the source address and port, and sends this request message through the Internet to the IRC server. 4. Noting your port triggering rule and observing the destination port number of 6667, your modem router creates another session entry to send any incoming port 113 traffic to your computer. 5. The IRC server sends a return message to your modem router using the NAT-assigned source port (for example, port 33333) as the destination port and also sends an "identify" message to your modem router with destination port 113. 6. When your modem router receives the incoming message to destination port 33333, it checks its session table to see if a session is active for port number 33333. Finding an active session, the modem Manage Port Forwarding and Port Triggering 290

Section	Page
Contents	3
1. Hardware Overview of the Modem Router	9
Unpack Your Modem Router	11
Attach the Antennas	11
Top Panel with LEDs	12
Back Panel with Ports, Buttons, Connectors, and Switch	15
Side Panels with USB Ports	17
Bottom Panel Product Label	17
2. Install and Access the Modem Router and Its Network	19
Position Your Modem Router	20
Connect to the Modem Router	20
Connect to the Modem Router Through an Ethernet Cable	21
Join the WiFi Network of the Modem Router	21
Manual Method	21
Wi-Fi Protected Setup Method	22
Types of Logins	22
NETGEAR genie Automatic Setup Utility	23
Set Up Your Modem Router for DSL Service	24
DSL Service	24
Cable the Modem Router for DSL Service and Access the Modem Router	24
Set Up the Modem Router for Cable or Fiber Service	32
Log In to the Modem Router After Setup to View or Change Settings	39
Change the Language	40
Change the admin Password	41
Set Up Password Recovery	42
Let the Modem Router Automatically Update Its Firmware	43
Access the Modem Router with the NETGEAR genie App	43
3. Manage the Internet Settings Manually	45
Use the Internet Setup Wizard After Initial Setup	46
Manually Set Up an ADSL Internet Connection	51
Specify an ADSL Connection Without a Login Requirement	51
Specify an ADSL Connection with a Login Requirement and PPPoA or PPPoE Service	57
Manually Set Up a VDSL Internet Connection	63
Specify a VDSL Connection Without a Login Requirement	63
Specify a VDSL Connection with a Login Requirement and PPPoE Service	68
Manually Set Up a Cable or Fiber Internet Connection	73
Specify a Cable or Fiber Connection Without a Login Requirement	74
Specify a Cable or Fiber Connection with a Login Requirement and PPPoE Service	79
Specify an IPv6 Internet Connection	84
IPv6 Internet Connections and IPv6 Addresses	84
Set Up an IPv6 Connection Through Auto Detect	85
Set Up an IPv6 6to4 Tunnel Connection	87
Set Up an IPv6 Pass-Through Connection	89
Set Up an IPv6 Fixed Connection	90
Set Up an IPv6 DHCP Connection	92
Set Up an IPv6 PPPoE Connection	94
Set Up an IPv6 Connection Through Auto Config	96
Manage the MTU Size	98
MTU Concepts	99
Change the MTU Size	100
4. Manage the WiFi Network Settings	101
Manage the Basic WiFi Settings and WiFi Security of the Main Network	102
View or Change the Basic WiFi Settings	102
Configure WPA/WPA2 Enterprise WiFi Security	109
Configure WEP Legacy WiFi Security	112
Use WPS to Add a Device to the WiFi Network	114
Use WPS with the Push Button Method	114
Use WPS with the PIN Method	116
Manage the Basic WiFi Settings and WiFi Security of the Guest Network	117
Control the WiFi Radios	123
Use the WiFi On/Off Button	124
Enable or Disable the WiFi Radios	124
Set Up a WiFi Schedule	125
Manage the WPS Settings	127
Manage Advanced WiFi Features	129
Use the Modem Router as a WiFi Access Point	131
5. Control Access to the Internet	134
Set Up Parental Controls	135
Allow or Block Access to Your Network	136
Enable and Manage Network Access Control	136
Manage Network Access Control Lists	139
Add Devices to or Remove Them from the Allowed List	139
Add Devices to or Remove Them from the Blocked List	141
Use Keywords to Block Internet Sites	143
Set Up Blocking	143
Remove a Keyword or Domain from the Blocked List	145
Remove All Keywords and Domains from the Blocked List	145
Specify a Trusted Computer	146
Manage Simple Outbound Firewall Rules for Services and Applications	147
Add an Outbound Firewall Rule	148
Add an Outbound Firewall Rule for a Custom Service or Application	150
Change an Outbound Firewall Rule	152
Remove an Outbound Firewall Rule	153
Set Up a Schedule for Keyword Blocking and Outbound Firewall Rules	154
Set Up Security Event Email Notifications	156
6. Optimize Performance	159
Optimize Traffic with QoS	160
Manage Default and Custom QoS Rules	161
Add a Custom QoS Rule for a Service or Application	161
Add a Custom QoS Rule for a Device	163
Change a QoS Rule or Change the Priority for a Rule	165
Remove a QoS Rule	167
Remove All QoS Rules	167
Manage Uplink Bandwidth Control	168
Manage Wi-Fi Multimedia Quality of Service	169
Manage Implicit Beamforming	170
Improve Network Connections with Universal Plug and Play	171
7. Share a Storage Device	173
USB Device Requirements	173
Connect a USB Device to the Modem Router	174
Access a Storage Device Connected to the Modem Router	175
Access the Device from a Windows Computer	175
Access the Device from a Mac	176
Back Up Windows Computers with ReadySHARE Vault	176
Back Up Mac Computers with Time Machine	177
Set Up a USB Hard Drive on a Mac	177
Prepare to Back Up a Large Amount of Data	178
Use Time Machine to Back Up onto a Storage Device	178
Manage Access to a Storage Device	179
Enable FTP Access Within Your Network	182
View Network Folders on a Device	183
Add a Network Folder on a Storage Device	184
Change a Network Folder, Including Read and Write Access, on a USB Drive	186
Approve USB Devices	188
Safely Remove a USB Device	189
Use the Modem Router as a Media Server	190
Enable the Media Server	190
Rescan the Media Files for Content	192
8. Manage Dynamic DNS and Access Storage Devices Through the Internet	193
Set Up and Manage Dynamic DNS	193
Your Personal FTP Server	194
Set Up a New Dynamic DNS Account	194
Specify a DNS Account That You Already Created	196
Access Storage Devices Through the Internet	197
Set Up FTP Access Through the Internet	198
Use FTP to Access Storage Devices Through the Internet	200
9. Share a USB Printer	202
Install the Printer Driver and Cable the Printer	203
Download the ReadySHARE Printer Utility	203
Install the ReadySHARE Printer Utility	203
Use the Shared Printer	205
Manually Connect and Print	205
Print and Release the Printer	205
View or Change the Status of a Printer	206
Use the Scan Feature of a Multifunction USB Printer	206
Change NETGEAR USB Control Center Settings	208
Change the NETGEAR USB Control Center Language	208
Specify the Time-out	209
10. Manage the WAN and LAN Network Settings	210
Change the Physical WAN Connection Preference	210
Enable and Configure a VLAN	212
Enable Bridge Mode for IPTV Devices	215
Manage the WAN Security Settings	216
Set Up a Default DMZ Server	217
Manage NAT Filtering	218
Manage the SIP Application-Level Gateway	219
Manage the Modem Router’s LAN IP Address Settings	219
Manage the Router Information Protocol Settings	221
Manage Reserved LAN IP Addresses	222
Reserve a LAN IP address	222
Change a Reserved IP Address	223
Remove a Reserved IP Address Entry	224
Change the Modem Router’s Device Name	225
Manage the DHCP Server Address Pool	225
Disable the Built-In DHCP Server	227
Set Up and Manage Custom Static Routes	228
Set Up a Static Route	228
Change a Static Route	230
Remove a Static Route	231
11. Manage the Modem Router and Monitor the Traffic	232
Update the Firmware of the Modem Router	233
Check for New Firmware and Update the Modem Router	233
Manually Upload New Firmware and Update the Modem Router	234
Manage the Configuration File of the Modem Router	235
Back Up the Settings	235
Restore the Settings	236
Recover the admin Password	237
Return the Modem Router to Its Factory Default Settings	238
Use the Reset Button	238
Erase the Settings	239
View the Status and Statistics of the Modem Router	240
View Information About the Modem Router and the Internet, Modem, and WiFi Settings	240
View the Traffic Statistics	247
Change the Traffic Statistics Polling Frequency	248
View or Change a TCP/IP Internet Connection	249
View or Change a PPPoE or PPPoA Internet Connection	250
View Devices Currently on the Network	251
Manage the Activity Log and Syslog	252
View the Logs	253
Specify Which Activities Are Logged	255
Specify a Syslog Server	255
Monitor and Meter Internet Traffic	256
Start the Traffic Meter Without Traffic Volume Restrictions	256
View the Traffic Statistics and Traffic Status	257
Restrict Internet Traffic by Volume	259
Restrict Internet Traffic by Connection Time	261
Unblock the Traffic Meter After the Traffic Limit Is Reached	263
Manage the Modem Router Remotely	264
Configure the Modem Router as a DSL Modem Only	266
12. Use VPN to Access Your Network	267
Set Up a VPN Connection	268
Specify VPN Service in the Modem Router	268
Install OpenVPN Software on Your Computer	269
Use a VPN Tunnel	271
Use VPN to Access the Modem Router’s USB Device and Media	272
Use VPN to Access Your Internet Service at Home	273
Set Up VPN Client Internet Access in the Modem Router	273
Block VPN Client Internet Access in the Modem Router	274
Use a VPN Tunnel to Access Your Internet Service at Home	275
13. Manage Port Forwarding and Port Triggering	276
Manage Port Forwarding to a Local Server for Services and Applications	276
Forward Incoming Traffic for a Default Service or Application	277
Add a Port Forwarding Rule with a Custom Service or Application	278
Change a Port Forwarding Rule	280
Remove a Port Forwarding Rule	281
Application Example: Make a Local Web Server Public	282
How the Modem Router Implements the Port Forwarding Rule	283
Manage Port Triggering for Services and Applications	283
Add a Port Triggering Rule	284
Change a Port Triggering Rule	286
Remove a Port Triggering Rule	287
Specify the Time-Out for Port Triggering	288
Disable Port Triggering	289
Application Example: Port Triggering for Internet Relay Chat	290
14. Diagnostics and Troubleshooting	292
Perform Diagnostics	292
Perform a DNS Lookup	293
Ping an IP Address	293
Display the Routing Table	294
Reboot the Modem Router from the Web Management Interface	295
Quick Tips for Troubleshooting	295
Troubleshoot with the LEDs	297
Power LED Is Off	298
Power LED Remains Solid Amber	298
WiFi LED Is Off	298
You Cannot Log In to the Modem Router	298
Troubleshoot the Internet Connection	299
Troubleshoot the DSL Link	299
DSL LED Is Solid White	299
DSL LED Is Blinking White	300
DSL LED Is Off or Internet LED Is Off	300
Internet LED Is Off	300
Obtain an Internet IP Address	300
Verify the PPPoE or PPPoA Connection	302
Reestablish the PPPoE or PPPoA Connection	303
Troubleshoot Internet Browsing	304
Changes Are Not Saved	304
Troubleshoot the WiFi Connectivity	304
Troubleshoot Your Network Using the Ping Utility	305
Test the LAN Path to Your Modem Router	305
Test the Path from Your Computer to a Remote Device	306
15. Supplemental Information	308
Factory Settings	309

Match case Limit results 1 per page

The BASIC Home page displays.

Select

ADVANCED > Advanced Setup > Port Forwarding / Port Triggering

The Port Forwarding / Port Triggering page displays.

Select the

Port Triggering

radio button.

The port triggering settings display.

Select the

Disable Port Triggering

check box.

If this check box is selected, the

modem router

does not apply port triggering rules even if you specified

them.

Click the

Apply

button.

Your settings are saved.

Application Example: Port Triggering for Internet Relay Chat

Some application servers, such as FTP and IRC servers, send replies to multiple port numbers. Using

port triggering, you can tell the

modem router

to open more incoming ports when a particular outgoing

port starts a session.

An example is Internet Relay Chat (IRC).Your computer connects to an IRC server at destination port

6667. The IRC server not only responds to your originating source port but also sends an “identify” message

to your computer on port 113. Using port triggering, you can tell the

modem router

, “When you initiate a

session with destination port 6667, you must also allow incoming traffic on port 113 to reach the originating

computer.”

The following sequence shows the effects of this port triggering rule:

You open an IRC client program to start a chat session on your computer.

Your IRC client composes a request message to an IRC server using a destination port number of

6667, the standard port number for an IRC server process.Your computer then sends this request

message to your

modem router

Your

modem router

creates an entry in its internal session table describing this communication session

between your computer and the IRC server.Your

modem router

stores the original information,

performs Network Address Translation (NAT) on the source address and port, and sends this request

message through the Internet to the IRC server.

Noting your port triggering rule and observing the destination port number of 6667, your

modem router

creates another session entry to send any incoming port 113 traffic to your computer.

The IRC server sends a return message to your

modem router

using the NAT-assigned source port

(for example, port 33333) as the destination port and also sends an “identify” message to your

modem

router

with destination port 113.

When your

modem router

receives the incoming message to destination port 33333, it checks its

session table to see if a session is active for port number 33333. Finding an active session, the

modem

Manage Port Forwarding and Port Triggering

290

Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000