Outbound Rules (Service Blocking) - NETGEAR DGN3500 User Manual

N300 Wireless Gigabit ADSL2+ Modem Router DGN3500

Outbound Rules (Service Blocking)

The wireless modem router 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 the following:
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)
•
The 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 create in the Schedule screen.You can specify
that the wireless modem router logs any attempt to use Instant Messenger during this
blocked period. You can also open or close AOL or MSN Instant Messenger ports: see the
Firewall Rules screen in the
Figure 20.
The settings are:
Order of Precedence for Rules
Protecting Your Network
40
on page 41.