Kindly follow the procedure below with regard to you inquiry. I found this document under admin guide of SBG
To send log information to a remote Syslog server
1 In the Control Center, click Administration > Settings > Logs.
2 Click the Remote tab.
3 Click Enable Syslog to enable remote system logging.
4 In the Host field, specify the Syslog server's IP address.
5 In the Port field, specify the port on the Syslog server that handles log data.
6 In the Protocol field, specify the Syslog protocol, UDP or TCP.
7 Click Include message logs to send message logs to a remote, third-party
Syslog server.
You must have selected Enable message logs on the Local tab to select this
item. If you select this option, then message audit logging facilities in the
Control Center are disabled based on the assumption that you are storing
message information in order to handle these tasks directly.
Note: If you select Enable logging to Syslog on this tab without selecting
Includemessagelogs, then message audit logs are written locally. If, however,
you select both Enable logging to Syslog and Include message logs, then
message audit logs are written exclusively to the local1, local2, or local3
facility on the remote Syslog server. You will not be able to view message
audit logs using the Control Center because they are not being written locally.
8 Specify where the log data is written from the Messagelog facility dropdown.
The receiving facility can be local1, local2, or local3.
9 Click Save to save your changes.