Figure 13 (Port Forwarding: Netmeeting)
The apply button will temporarily save this connec-
tion. To make the change permanent you need to
click on Save Settings (at the side of the page). At
the system commands page, click on Save All.
4.6.3 Advanced Security
In the presence of the firewall, anonymous Internet
traffic is blocked. Using the advanced security featu-
res, you can redirect this traffic to a dedicated com-
puter on your local network (DMZ) or open the
access from the Internet to the ADSL Router's
management ports (web, telnet). The ADSL Router's
firewall and NAT services (port forwarding, access
control) can be disabled for all interfaces by un-
checking the "Enable Firewall and NAT Service"
To enable any of the advanced security features,
click Advanced and configure the option under
Firewall. Figure 14 illustrates the typical advanced
security in Access Control configuration.
Figure 14 (Access Control)
The apply button will temporarily save this connec-
tion. To make the change permanent you need to
click on Save Settings (at the side of the page). At
the system commands page, click on Save All.
4.6.3.1 DMZ configuration
Setting a computer (on your local network) as a
DMZ forwards any network traffic that is not redi-
rected to another computer via the port-forwarding
feature to the computer's IP address. This opens the
access to the DMZ computer from the Internet.
4.6.3.2 Enable Web from WAN
Enabling the Web from WAN on your local network
allows Web requests that come from the Internet to
be re-routed to a Web Server that is on a different
subnet. This is different that the Web server rule
that is configurable via the port-forwarding page.
In this case, the web server is on a different subnet.
4.6.3.3 Enable Remote Telnet
Enabling the Remote Web on your local network
allows telnet requests that come from the Internet
to be re-routed to a telnet Server that is on a diffe-
rent LAN IP subnet. This is different that the telnet
server rule that is configurable via the port-forwar-
ding page. In this case, the telnet server is on a dif-
ferent subnet.
4.6.3.4 Enable Incoming ICMP Ping
Enabling the Incoming Internet Control Message
Protocol (ICMP) Ping will allow Echo requests to
come into the gateway. The gateway will respond
with an ICMP Echo response message. The option
allows the DSL provider or ISP to determine the fol-
lowing:
a.) The status of the network.
b.) Tracking and isolating hardware and software
problems.
c.) Testing, measuring, and managing networks.
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