
TD-W8961ND  300Mbps Wireless N ADSL2+ Modem Router User Guide
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Figure 4-25 
 Firewall: Select this option can automatically detect and block Denial of Service (DoS)  
attacks, such as Ping of Death, SYN Flood, Port Scan and Land Attack. 
 SPI: If you enable SPI, all traffics initiated from WAN would be blocked, including DMZ, 
Virtual Server, and ACL WAN side. 
4.4.2  Routing Choose “Advanced Setup→Routing” menu, and you will see the routing information in the next 
screen (shown in Figure 4-26). 
Figure 4-26 
Click ADD ROUTE button to add a new route in the next screen (shown in Figure 4-27). 
Figure 4-27 
 Destination IP Address: This parameter specifies the IP network address of the final 
destination. 
 IP Subnet Mask: Enter the subnet mask for this destination.