D-Link NetDefend DFL-CP310 User Manual page 254

Using SmartDefense
In this field...
Action Protection for
SWIPE - Protocol 53 /
IP Mobi lity - Protocol 55 /
SUN-ND - Protocol 77 /
PIM - Protocol 103
Null Pa yload
Some worms, such as Sasser, use ICMP echo request packets with null payload to
detect potentially vuln r
You can configure how null payload ping packets should be handled.
Table 45: Null Payload F
In this field... Do this...
Action Specify wh
selecting one of the following:
•
•
238
Do this...
Specify what action to take when an IP
protocol type is received, by selecting one of the following:
•
Block. Drop
the packet. This is the
•
None. No action.
e able hosts.
ields
at action to ta ke when null payload p
Block. Block the packets. This is the default.
None. No action.
v4 packet of the s pecific
default.
ing packets are detected, by
D-Link NetDefend firewall User Guide