Configure the Session Border Controller (SBC) Behind a Network Address Translation (NAT) Device Option

Configure one public-private address pair for each SIP interface that uses the Support for SBC Behind NAT SPL plug-in, as follows.

• The private IP address must be the same as the SIP interface IP address.
• The public IP address must be the public IP address of the NAT device.

Before You Begin

• Confirm that the SIP interface is configured.
• Confirm that you are in the Superuser mode.

To configure the SIP interface IP addresses:

1. Type configure terminal, and press <Enter>.

   ORACLE# configure terminal 

2. Type system, and press <Enter>.

   ORACLE(configure)# system
   ORACLE(system)#  

3. Type session-router, and press <Enter>.

   ORACLE(configure)# session-router
   ORACLE(session-router)#

4. Type sip-interface, and press <Enter>.

   ORACLE(session-router)# sip-interface
   ORACLE(sip-interface)# 
   

5. Select the SIP interface, and press <Enter>.

   ORACLE(sip-interface)# select
   <RealmID>:
   1: DefaultENT 172.16.1.100:5060
   2: DefaultSP  192.168.0.1:5060
   
   selection:2
   System_Primary(sip-interface)#

6. Type spl-options +HeaderNatPrivateSipIfIp "<value>", where <value> is the private SIP interface IP address, and press <Enter>.

   ORACLE(sip-interface)#spl-options +HeaderNatPrivateSipIfIp=192.168.0.1

7. Type spl-options +HeaderNatPublicSipIfIp "<value>", where <value> is the public IP address of the NAT device, and press <Enter>.

   ORACLE(sip-interface)#spl-options +HeaderNatPublicSipIfIp=10.0.0.99

8. Type done, and press <Enter>.
9. Save and activate the configuration.