Netgear DG834G [68/204] Outbound rules service blocking

DG834G Reference Manual

5-10 Protecting Your Network

v3.0, September 2005

Outbound Rules (Service Blocking)

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:

• IP address of the local computer (source address)

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

•Time of day

• Type of service being requested (service port number)

Following is an application example of outbound rules:

Outbound Rule Example: Blocking Instant Messenger

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

ADSL modem router log any attempt to use Instant Messenger during that blocked period.

Figure 5-7