Chapter 14 Firewall
161
14.5 DoS Screen
Use this screen to enable DoS protection. Click
Security > Firewall > Dos
to display the following
screen.
Figure 105
Security > Firewall > Dos
The following table describes the labels in this screen.
Table 65
Security > Firewall > Dos
LABEL
DESCRIPTION
Denial of
Services
Enable this to protect against DoS attacks. The Device will drop sessions that surpass
maximum thresholds.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
Advanced
Click this to go to a screen to specify maximum thresholds at which the Device will start
dropping sessions.
14.5.1 The DoS Advanced Screen
For DoS
attacks, the Device uses thresholds to determine when to start dropping sessions that do
not become fully established (half-open sessions). These thresholds apply globally to all sessions.
Type
Click
Single
to specify one port only or
Port Range
to specify a span of ports that define
your customized service.
Port Number
Type a single port number or the range of port numbers that define your customized
service.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to exit this screen without saving.
Table 64
Security > Firewall > Rules: Edit: Edit Customized Services: Add/Edit (continued)
LABEL
DESCRIPTION
