Allied Telesis AT-S63 - Manual (Page 215)

AT-S63 Management Software Web Browser Interface User’s Guide
Section II: Advanced Operations 215
b. In the DoS Subnet Mask field, enter the LAN’s mask. enter the
mask. A binary “1” indicates the switch should filter on the
corresponding bit of the IP address, while a “0” indicates that it
should not. As an example, assume that the devices connected to
a switch are using the IP address range 149.11.11.1 to
149.11.11.50. The mask would be 0.0.0.63.
c. If you are activating the Land defense, in the DoS Uplink Port field
enter the number of the port connected to the device (e.g., DSL
router) that leads outside your network. You can specify only one
uplink port.
5. Click the ports in the switch image where you want to enable or disable
a defense mechanism.
6. Using the DoS Type list, select the type of denial of service attack you
want to either enable or disable on the ports. The possible selections
are:
ˆ Syn Flood attack
ˆ Smurf attack
ˆ Land attack
ˆ Tear drop attack
ˆ Ping of death attack
ˆ IP Options
7. Click Modify. To configure all the ports, click Modify All.
The DoS Configuration for Ports page opens. The page shown in
Figure 81 is for IP Options.
Figure 81. DoS Configuration for Ports Page