Filter
Top Products
18
Chapter 4: Configuring the ADSL Modem
The Applications and Gaming Tab
ADSL Modem
• IPSec Passthrough. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure
exchange of packets at the IP layer. To allow IPSec Passthrough, click the Enabled option. To disable IPSec
Passthrough, click the Disabled option.
• L2TP Passthrough. Layering 2 Tunneling Protocol Passthrough is an extension of the Point-to-Point Tunneling
Protocol (PPTP) used to enable the operation of a VPN over the Internet.To allow L2TP Passthrough, click the
Enabled option. To disable L2TP Passthrough, click the Disabled option.
• PPTP Passthrough. Point-to-Point Tunneling Protocol Passthrough is the method used to enable VPN sessions
to a Windows NT 4.0 or 2000 server. To allow PPTP Passthrough, click the Enabled option. To disable PPTP
Passthrough, click the Disabled option.
The Applications and Gaming Tab
The Applications and Gaming Tab allows you to set 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.)
Port Range Forwarding
The Port Forwarding screen 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 Modem will forward those requests to
the appropriate computer. Any computer whose port is being forwarded should have its DHCP client function
disabled and should have a static IP address assigned to it because its IP address may change when using the
DHCP function.
• Application. Enter the name you wish to give each application.
• Start and End. Enter the starting and ending numbers of the port you wish to forward.
• Protocol. Select the type of protocol you wish to use for each application: TCP, UDP, or Both.
• IP Address. Enter the IP Address of the appropriate computer.
• Enable. This checkbox must be selected to forward the requests to the defined IP address.
Figure 4-20: VPN Passthrough
Figure 4-21: Port Range Forwarding