Netgear Dm111pspv2 Adsl2 Plus Ethernet Modem User Manual

Security Settings
31  Broadband ADSL2+ Modem DM111PSPv2
(such as FTP and IRC servers) send replies back to multiple port numbers. By using the 
inbound rule function of your router, you can tell the router to open additional incoming ports 
when a particular outgoing port originates 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...

Security Settings
32 Broadband ADSL2+ Modem DM111PSPv2 
Inbound Rules to Permit External Host Communications
In both of the preceding examples, your computer initiates an application session with a 
server computer on the Internet. However, you might need to allow a client computer on the 
Internet to initiate a connection to a server computer on your network. Normally, your router 
ignores any inbound traffic that is not a response to your own outbound traffic. You can 
configure exceptions to this...

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 Broadband ADSL2+ Modem DM111PSPv2
How Inbound Rules Differ from Outbound Rules
The following points summarize the differences between inbound rules and\
 outbound rules:
•     Outbound rules can be used by any computer on your network, although onl\
y one 
computer can use them at a time.
•     Inbound rules are configured for a single computer on your network.
•      Outbound rules do not require that you know the computer’s IP address\
 in advance. The 
IP address is captured...

Security Settings
34 Broadband ADSL2+ Modem DM111PSPv2 
•     For an inbound rule, click Add under Inbound Services.
3. To edit or delete a rule, select its button on the left side, and click Edit or Delete.
4. To change the order of precedence:
a.Select its button on the left side of the table, and click Move. 
b. At the prompt, enter the number of the new position, and click OK.
5. To open or close instant messaging, select a radio button, and click Apply.
•     Close IM Ports. Disables instant...

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 Broadband ADSL2+ Modem DM111PSPv2
Inbound Rule Example: A Local Public Web Server
If you host a public web server on your local network, you can define a \
rule to allow inbound 
web (HTTP) requests from any outside IP address to the IP address of y\
our web server at 
any time of day, as shown here and described following the figure:
Figure 7. Allow inbound web requests
Service. From this list, select the application or service you want to allow or\
 block. The list 
already...

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Broadband ADSL2+ Modem DM111PSPv2 
Inbound Rule Example: Allowing Video Conferencing
Create an inbound rule to allow incoming video conferencing to be initia\
ted from a restricted 
range of outside IP addresses, such as from a branch office. In the foll\
owing figure, 
CU-SeeMe connections are allowed from a specified range of external IP a\
ddresses only. In 
this case, logging of any incoming CU-SeeMe requests that do not match t\
he allowed 
settings is always allowed.
Figure 8....

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 Broadband ADSL2+ Modem DM111PSPv2
To set up service blocking:
1. 
Select  Security > Firewall Rules  to display the following screen:
2. Under Outbound Services, click  Add.
3.  Fill in the settings as follows, and click Apply to save your settings.
Service. From this list, select the application or service to be allowed or blo\
cked. The list 
already displays many common services, but you are not limited to these \
choices. Use 
the Add Custom Service button in the Services screen...

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Broadband ADSL2+ Modem DM111PSPv2 
Configure Services
Services are functions performed by server computers at the request of c\
lient computers. For 
example, web servers serve web pages, time servers serve time and date i\
nformation, and 
game hosts serve data about other players’ moves. When a computer on \
the Internet sends a 
request for service to a server computer, the requested service is ident\
ified by a service or 
port number. This number appears as the destination port...

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 Broadband ADSL2+ Modem DM111PSPv2
•     
Type . Select the correct type for this service. If in doubt, select  TCP/UDP. The options 
are TCP, UDP, TCP/UDP.
•     Start Port and End Port . If a port range is required, enter the range here. If a single 
port is required, enter the same value in both fields.
3.  Click  Apply to save your changes.
Set the Time Zone
The modem uses the Network Time Protocol (NTP) to obtain the current t\
ime and date from 
one of several network time...

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Broadband ADSL2+ Modem DM111PSPv2 
4. 
The  modem  has a list of NETGEAR NTP servers. If you would prefer to use a particul\
ar 
NTP server as the primary server, select the Use this NTP Server check box, and enter its 
IP address.
5.  Click  Apply to save your settings.
Schedule Firewall Services
If you enabled services blocking in the Block Services screen or port fo\
rwarding in the Ports 
screen, you can set up a schedule for when blocking occurs or when acces\
s is not...