Netgear FVS318v3 User Manual download pdf (Page 45)

Reference Manual for the ProSafe VPN Firewall FVS318v3

Firewall Protection and Content Filtering 4-7

January 2005

Outbound Rules (Service Blocking)

The FVS318v3 allows you to block the use of certain Internet services by PCs on your network.

This is called service blocking or port filtering. You can define an outbound rule to block Internet

access from a local PC based on:

• IP address of the local PC (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 an outbound rule:

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

firewall log any attempt to use Instant Messenger during that blocked period.

Figure 4-5: Rule example: blocking Instant Messenger

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Netgear FVS318v3 User Manual Page 45