D-Link DSL-504 Product Manual - Page 27

Advanced Filtering and Firewall Screen #3, Comment, Filter, Pass or Block, Direction, Protocol, Source

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DSL-504 ADSL Router User's Guide Advanced Filtering and Firewall (Screen #3) In the third Advanced Filtering window you will define the terms or rule to be used for filtering a specific IP address. Again you can supply a name for the subset in the Comment field and click the box on the right to enable the Filter Rule. In the Pass or Block field select the action to be performed on the IP packets, the default is Pass Immediately. Any blocked packets are simply dropped. In the Direction field choose either In or Out from the pull down menu. Which one you choose depends on whether you are blocking IP packets from coming into the network (blocking a specific web site for example). Or alternatively you can block packets originating at a specific IP address from leaving the LAN; this will block Internet access for a specific host. The Protocol field allows you to define the type of protocol of the packets to be blocked. You must next specify the Source and Destination IP Addresses as well as their Subnet Mask. This will block the packets from or destined to any specified IP address from passing through the Router. 21

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DSL-504 ADSL Router User’s Guide
21
Advanced Filtering and Firewall (Screen #3)
In the third Advanced Filtering window you will define the terms or rule to be
used for filtering a specific IP address. Again you can supply a name for the
subset in the
Comment
field and click the box on the right to enable the
Filter
Rule
.
In the
Pass or Block
field select the action to be performed on the IP packets,
the default is
Pass Immediately
. Any blocked packets are simply dropped.
In the
Direction
field choose either
In
or
Out
from the pull down menu. Which
one you choose depends on whether you are blocking IP packets from coming into
the network (blocking a specific web site for example). Or alternatively you can
block packets originating at a specific IP address from leaving the LAN; this will
block Internet access for a specific host.
The
Protocol
field allows you to define the type of protocol of the packets to be
blocked.
You must next specify the
Source
and
Destination IP Addresses
as well as
their
Subnet Mask
. This will block the packets from or destined to any specified
IP address from passing through the Router.