D-Link Corporation SL2640BB3 User Manual

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Section 4 - Troubleshooting 
D-Link DSL-2640B User Manual 
 
   
 
 
 
 
 
 
 
 
 
            
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INBOUND IP FILTER 
By default, all incoming IP traffic that does not originate from the internal network is blocked when the firewall is enabled. Normal outgoing Internet 
requests created by web browsing, email and other software you run will work as usual as the requests originate from inside your internal network. 
The Inbound Filter allows you to create a filter rule to allow incoming IP traffic by specifying a filter name and at least one condition below. All of the 
specified conditions in this filter rule must be satisfied for the rule to take effect. 
To access the INBOUND IP FILTER setting window, click on the Inbound Filter button in the ADVANCED directory. 
ADD INBOUND IP FILTER 
Enter the Filter name and at least one of the following criteria: 
Protocol
Source/Destination IP Address and Subnet Mask, and 
Source/Destination Port
.
Click on the Add/Apply button to add and apply settings.   
Note: This section only applies when the Firewall is enabled. 
The Active Inbound IP Filter shows detailed information about each 
created inbound IP filter. To remove an IP filter, click on the Remove
button (only appears when there is an existing IP filter).