D-Link DI-624S manual Advanced Firewall, Action, Source, Destination

Using the Configuration Menu (continued)

Advanced > Firewall

This Router comes equipped with a firewall. The Firewall configuration screen allows the Router to enforce specific predefined policies intended to protect against certain common types of attacks. To configure the Router’s firewall, click the Advanced tab at the top of the screen and then the Firewall tab to the left.

To configure rules for the firewall, modify the following fields and click Apply to set the rule in the Routers memory. Newly configured firewall rules will be displayed in the Firewall Rules List at the bottom of the page. To modify an entry in this list, click its corresponding edit icon. To delete an entry from this list, click its corresponding delete icon.

Firewall	Click the corresponding radio button if you wish to enable or disable
	the firewall function on the Router.
Name	Enter a name that will define the firewall rule to be configured. This
	entry is dependant on how the user wishes to classify this rule.
Action	Click whether to Allow or Deny traffic to pass through the Router by
	checking the corresponding radio button. Users may configure only
	specific traffic to pass through the router by checking Allow or users
	may stop specific traffic from passing through the Router by checking
	Deny.
Source	Enter the IP address or range of IP addresses that you wish to block or
	allow to pass through the router. The Source may be identified on the
	LAN side, the WAN side or both by using the pull-down menu for the
	Interface heading.
Destination	Enter the IP address or range of IP addresses that you wish to deny or
	allow access to the Internet. The Destination may be identified on the
	LAN side, the WAN side or Both by using the pull-down menu for the
	Interface heading. The type of protocol may also be chosen by using
	the pull-down menu. The user may choose between TCP, UDP, ICMP
	or (*) Any. The user may also select a range of ports of the destination
	IP addresses by entering the range under the Port Range heading.
Schedule	Clicking Always will set the firewall permanently, unless changed by
	the user. Alternately, the user may set up a time schedule to
	implement the firewall, on a week-to-week basis by clicking the From
	radio button and setting the appropriate times to begin and end the
	firewall function.

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