You are asked to implement IPS on your SRX Series device.

 To implement IPS on your SRX Series device, you need to download and install the IPS signature database. The IPS signature database contains the attack signatures and predefined attack groups that are used to detect and prevent intrusions. You can download the IPS signature database from the Juniper Networks website or from a local server. You can install the IPS signature database manually or automatically. You do not need to enroll the SRX Series device with Juniper ATP Cloud or reboot the SRX Series device to implement IPS34 References:

Configuring the IPS Policy on SRX Series Devices Using NSM

Installing SRX 1400 with IPS activation ??? | SRX - Juniper Networks

Download an IPS Signature | J-Web for SRX Series 21.2 - Juniper Networks

IPS Configuration (CLI) | Junos OS | Juniper Networks