Juniper NETWORK AND SECURITY MANAGER 2010.3, Administration Manual

Page: 583 / 1016

•
Other routing instances, if you have added them previously. To add a new
routing instance, use
Object Manager
>
Routing Instance Objects
.
• Zone
—Select the zone from the list.
In general, the list displays the zones configured within a specific device or
just the shared zones depending on whether the
Select From Device
check
box is selected (default) or not and can have the following values:
• The default zone ( junos-global ), which ships with the device. You can use
this zone, if you do not wish to configure anything new.
• Other zones, if you have added them previously. To add a new zone, use
Object Manager
>
Zone Objects
.
• Interface
—Select the interface(s) from the list. The interfaces are listed only
if you have imported the device to NSM. Hence, for modeled devices, no
interfaces are listed.
c.
Click OK .
A rule set with the specified name gets created and is displayed in the
Security Policy
window.
The next step is to add rules to the rule set. For more information, see “Adding a Rule to
a Source NAT Rule Set” on page 533.
Adding a Rule to a Source NAT Rule Set
To add a new rule to a rule set:
1.
From the Source NAT tab, select the rule set to which you want to add the rule.
2.
Click ( + ) at the upper left corner of the Source NAT tab.
3.
Select Add Rule to add a new rule to the selected rule set. The New Rule dialog box
appears.
Here, you must specify a unique name for the rule and set the conditions and the
action to be performed when the traffic matches these conditions, as follows:
a.
Enter a name, which uniquely identifies the rule within the rule set.
b.
Select the source address from the list. This address represents the public IP
address through which the traffic leaves the private network.
c.
Select the destination address from the list. The addresses listed here represent
the hosts, which are in the public network.
d.
If using Port Address Translation (PAT), specify a port range (between 1024
and 65535) in the
Low
and
High
fields. When PAT is used, multiple hosts can
share the same IP address. For more information on PAT, see
http://www.juniper.net/techpubs/software/junos-security/junos-security10.0/
junos-security-swconfig-security/id-11012.html#id-11012
.
533 Copyright © 2010, Juniper Networks, Inc.
Chapter 11: Configuring Junos NAT Policies