Fraud Prevention

The Oracle® Enterprise Session Border Controller can constrain outgoing SIP messages to a maximum size in bytes in order to support fraud prevention techniques. If a message does exceed the configured size, it is dropped. A SIP message can be constrained from 0 to 65535 bytes, with a default value of 4096 bytes.

Fraud Prevention Configuration

To set a maximum SIP message size:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal

2. Type session-router and press Enter to access the signaling-level configuration elements.

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

3. Type sip-config and press Enter. The system prompt changes to let you know that you can begin configuring individual parameters.

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

4. Type select to configure the existing sip config.

   ORACLE(sip-config)# select

5. sip-message-len—Set the size constraint in bytes of a SIP message. The default is 4096. The valid range is:

   • Minimum—0

   • Maximum—65535

     This completes the configuration.

     ORACLE(sip-config)# sip-message-len 5000

6. Save your work using the ACLI done command.