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Chapter 5: Configuring the Router

The Security Tab - VPN Passthrough

The Security Tab - VPN Passthrough

The

VPN Passthrough

screen allows you to allow VPN tunnels using IPSec, PPPoE, or PPTP protocols to pass

through the Router.

VPN Passthrough

IPSec Passthrough

. IPSec (Internet Protocol Security) is a suite of protocols used to implement secure

exchange of packets at the IP layer. To allow IPSec Passthrough, click the

Enabled

button. To disable IPSec

Passthrough, click the

Disabled

button.

PPPoE Passthrough

. PPPoE (Point-to-Point over Ethernet) Passthrough allows your PC(s) to use the PPPoE

client software provided by your ISP. Some ISPs may request that you use this feature on the Router. To allow

PPPoE Passthrough, click the

Enabled

button. To disable PPPoE Passthrough, click the

Disabled

button.

PPTP Pass Through

. PPTP (Point-to-Point Tunneling Protocol) Passthrough allows the Point-to-Point (PPP) to be

tunneled through an IP network. To allow PPTP Passthrough, click the

Enabled

button. To disable PPTP

Passthrough, click the

Disabled

button.

When you have finished making changes to this screen, click the

Save Settings

button to save the changes, or

click the

Cancel Changes

button to undo your changes. Help information is shown on the right-hand side of a

screen. For additional information, click

More

.

Figure 5-16: Security Tab - VPN

Passthrough

ipsec

: a VPN protocol used to implement

secure exchange of packets at the IP

layer

pptp

: a VPN protocol that allows the Point

to Point Protocol (PPP) to be tunneled

through an IP network. This protocol is

also used as a type of broadband

connection in Europe

vpn

: a security measure to protect data as

it leaves one network and goes to another

over the Internet

pppoe

: A type of broadband connection

that provides authentication (username

and password) in addition to data

transport

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Chapter 5: Configuring the Router

The Voice Tab

The Voice Tab

Access to the Voice tab is restricted by Vonage. Contact Vonage for more information.

The Applications & Gaming Tab - Port Range Forwarding

When you click the Applications & Gaming tab, you will see the

Port Range Forwarding

screen. Port Range

Forwarding sets up public services on your network, such as web servers, ftp servers, e-mail servers, or other

specialized Internet applications. (Specialized Internet applications are any applications that use Internet

access to perform functions such as videoconferencing or online gaming. Some Internet applications may not

require any forwarding.) When users send this type of request to your network via the Internet, the Router will

forward those requests to the appropriate PC.

Before using forwarding, you should assign a static IP address to the designated PC.

If you need to forward all ports to one PC, click the

DMZ

tab.

Port Range Forwarding

Port Range

To add a server using Port Range Forwarding, complete the following fields:

Application

. Enter the name of the application.

Start and End

. Enter the number or range of external port(s) used by the server or Internet application. Check

with the Internet application software documentation for more information.

Figure 5-17: Voice Tab

Figure 5-18: Applications & Gaming Tab -

Port Range Forwarding

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Chapter 5: Configuring the Router

The Applications & Gaming Tab - Port Triggering

Protocol

. Select the protocol

TCP

or

UDP

, or select

Both

.

IP Address

. Enter the IP address of the server that you want the Internet users to be able to access. To find the

IP address, go to “Appendix B: Finding the MAC Address and IP Address for Your Ethernet Adapter.”

Enable

. Check the

Enable

box to enable the services you have defined. Port Range Forwarding will not function

if the Enabled button is left unchecked. This is disabled (unchecked) by default.

When you have finished making changes to this screen, click the

Save Settings

button to save the changes, or

click the

Cancel Changes

button to undo your changes. Help information is shown on the right-hand side of a

screen. For additional information, click

More

.

The Applications & Gaming Tab - Port Triggering

The

Port Triggering

screen allows the Router to watch outgoing data for specific port numbers. The IP address

of the computer that sends the matching data is remembered by the Router, so that when the requested data

returns through the Router, the data is pulled back to the proper computer by way of IP address and port

mapping rules.

Port Triggering

Application

. Enter the application name of the trigger.

Triggered Range

For each application, list the triggered port number range. Check with the Internet application documentation

for the port number(s) needed.

Start Port

. Enter the starting port number of the Triggered Range.

ip

(internet protocol): a protocol used to

send data over a network

ip address

: the address used to identify a

computer or device on a network

tcp

: a network protocol for transmitting

data that requires acknowledgement from

the recipient of data sent

udp

: a network protocol for transmitting

data that does not require

acknowledgement from the recipient of

the data that is sent.

Figure 5-19: Applications & Gaming Tab -

Port Triggering

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Chapter 5: Configuring the Router

The Applications & Gaming Tab - UPnP Forwarding

End Port

. Enter the ending port number of the Triggered Range.

Forwarded Range

For each application, list the forwarded port number range. Check with the Internet application documentation

for the port number(s) needed.

Start Port

. Enter the starting port number of the Forwarded Range.

End Port

. Enter the ending port number of the Forwarded Range.

When you have finished making changes to this screen, click the

Save Settings

button to save the changes, or

click the

Cancel Changes

button to undo your changes. Help information is shown on the right-hand side of a

screen. For additional information, click

More

.

The Applications & Gaming Tab - UPnP Forwarding

The

UPnP Forwarding

screen displays preset application settings as well as options to customize port services

for other applications.

UPnP Forwarding

Application

. Ten applications are preset. For custom applications, enter the name of your application in one of

the available fields.

The preset applications are among the most widely used Internet applications. They include the following:

Figure 5-20: Applications & Gaming Tab -

UPnP Forwarding

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Chapter 5: Configuring the Router

The Applications & Gaming Tab - UPnP Forwarding

FTP

(File Transfer Protocol). A protocol used to transfer files over a TCP/IP network (Internet, UNIX, etc.). For

example, after developing the HTML pages for a website on a local machine, they are typically uploaded to the

web server using FTP.

Telnet

. A terminal emulation protocol commonly used on Internet and TCP/IP-based networks. It allows a user at

a terminal or computer to log onto a remote device and run a program.

SMTP

(Simple Mail Transfer Protocol). The standard e-mail protocol on the Internet. It is a TCP/IP protocol that

defines the message format and the message transfer agent (MTA), which stores and forwards the mail.

DNS

(Domain Name System). The way that Internet domain names are located and translated into IP addresses.

A domain name is a meaningful and easy-to-remember “handle” for an Internet address.

TFTP

(Trivial File Transfer Protocol). A version of the TCP/IP FTP protocol that has no directory or password

capability.

Finger

. A UNIX command widely used on the Internet to find out information about a particular user, such as a

telephone number, whether the user is currently logged on, and the last time the user was logged on. The person

being “fingered” must have placed his or her profile on the system in order for the information to be available.

Fingering requires entering the full user@domain address.

HTTP

(HyperText Transport Protocol). The communications protocol used to connect to servers on the World Wide

Web. Its primary function is to establish a connection with a web server and transmit HTML pages to the client

web browser.

POP3

(Post Office Protocol 3). A standard mail server commonly used on the Internet. It provides a message

store that holds incoming e-mail until users log on and download it. POP3 is a simple system with little

selectivity. All pending messages and attachments are downloaded at the same time. POP3 uses the SMTP

messaging protocol.

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