D-Link WIRELESSADSLROUTER DSL-G604T - Manual (Page 49)

DSL-G604T 54Mbps Wireless ADSL2/2+ Modem/Router Manual
Filters
The following window will aid the router’s administrator in configuring filters for IP addresses. There
are two types of filters that the administrator can configure. Outbound Filters are for administrators
who wish to deny clients on their LAN from accessing certain virtual ports or IP addresses on the
Internet. Inbound Filters are for administrators who wish to deny IP addresses or virtual ports from
outside the router (on the Internet) from accessing the Internal LAN of the router. Click the
corresponding radio button to configure Outbound or Inbound Filters. Both screens are identical in
configuration.
Figure 5- 5. Filters window
To configure filters for the router, configure the folowing fields and click Apply.
Source IP Enter an IP address or range of addresses from which to block or allow packets. This
field may also be used to block a set of subnet masks by using the corresponding pull
down menu.
Destination IP Enter an IP address or range of addresses to which to block or allow packets from being
sent. This field may also be used to block a set of subnet masks by using the
corresponding pull down menu.
Source Port Enter a port or range of ports from which to block or allow packets. This field can only
be configured if TCP or UDP is selected in the Protocol field. The Safe Range option in
the pull down menu is for ports that have a higher value than 1024.
Destination Port Enter a port or range of ports to which to block or allow packets from being sent. This
field can only be configured if TCP or UDP is selected in the Protocol field. The Safe
Range option in the pull down menu is for ports that have a higher value than 1024.
Protocol Use the pull down menu to select the protocol type to be used for this filter. The user
may choose between TCP, UDP or TCP UDP.
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