Netgear DG834Gv2 – 54 Mbps Wireless ADSL Firewall Modem Manual De Referência

Protecting Your Network

5-9

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If the IP address of the local server computer is assigned by DHCP, it may change when the 
computer is rebooted. To avoid this, use the Reserved IP address feature in the LAN IP menu 
to keep the computer’s IP address constant.

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Local computers must access the local server using the computer’s local LAN address 
(192.168.0.11 in the example in 

 above). Attempts by local computers to access the 

server using the external WAN IP address will fail.

The DG834G allows you to block the use of certain Internet services by computers on your 
network. This is called service blocking or port filtering. You can define an outbound rule to block 
Internet access from a local computer based on:

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IP address of the local computer (source address)

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IP address of the Internet site being contacted (destination address)

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Time  of  day

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Type of service being requested (service port number)

Following is an application example of outbound rules:

If you want to block Instant Messenger usage by employees during working hours, you can create 
an outbound rule to block that application from any internal IP address to any external address 
according to the schedule that you have created in the Schedule menu. You can also have the router 
log any attempt to use Instant Messenger during that blocked period.