Example: Using Multiple Device Templates
In this example, you create two templates that each configure different values for the
same firewall SCREEN option for the untrust zone. The first template, DoS, sets several
values in the SCREEN options, including setting the source-based IP session threshold
limit to 128 for the untrust zone. The second template, DoS2, sets the source-based IP
session threshold limit to 256 for the untrust zone. When you apply these templates to
a device, the template with the highest priority overrides the values in the lower-priority
template.
1.
Create a template that sets SCREEN options for the untrust zone, and then apply
the template to a NetScreen-208 device running ScreenOS 5.0:
a.
In the navigation tree, select
Device Templates
, click the Add icon, and then
select
ScreenOS/IDP Template
. The New Device Template dialog box appears.
b.
In the Info screen, enter
DoS
in the Name field.
c.
In the template navigation tree, select
Network > Zone
. The Zone configuration
screen appears.
d.
Click the Add icon in the Zone configuration screen and select
Pre-Defined
Security Zone — trust|untrust|dmz|global
. The Predefined Zone dialog box
appears.
NOTE:
Because the untrust security zone is predefined for the device, you must select
the Predefined Security Zone option. You can select the Security Zone or Tunnel Zone
option only when adding or configuring a user-defined zone.
e.
In the General Properties screen, enter
untrust
in the Name field.
f.
In the zone navigation tree, select
Screen > Denial of Service Defense
. The
Denial of Service Defense screen appears.
g.
Select and configure the following options:
•
Select
Ping of Death Attack Protection
,
Teardrop Attack Protection
, and
Land Attack Protection
.
•
Select
SYN-ACK-ACK Proxy Protection
and set the Threshold to
512
.
•
Select
Source IP Based Session Limit
and set the Threshold to
128
.
•
Select
Destination IP Based Session Limit
and set the Threshold to
4000
.
Click
OK
to save the new zone.
h.
Click
OK
to save the new device template.
2.
Apply the DoS template to a device configuration for a NetScreen-208 running
ScreenOS 5.0:
203
Copyright © 2010, Juniper Networks, Inc.
Chapter 5: Configuring Devices
Summary of Contents for NETWORK AND SECURITY MANAGER 2010.3
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