SandBlast appliances can be deployed in the following modes:

C. Inline/prevent or detect

SandBlast appliances can be deployed in an inline mode where they actively inspect and prevent or detect malicious traffic. In this mode, the appliance sits in the network traffic path and can take actions to block or detect threats in real-time.

References: Check Point Certified Security Expert R81 Study Guide, Check Point documentation on SandBlast.