IoT Security Integration with Prisma Access
Use IoT Security with Prisma Access to gain visibility and protection of IoT devices in your remote networks.
Prisma Access uses a cloud-based infrastructure that lets you avoid the challenges of sizing firewalls and computing resource allocation while securing remote networks and mobile users. To identify IT and IoT devices at your remote sites, detect IoT device vulnerabilities, and discover threats posed to these devices and the network, Prisma Access can integrate with IoT Security through a purchased add-on. In addition, IoT Security also provides Prisma Access with policy rule recommendations through Panorama to permit only acceptable network behavior and block anomalous behavior from your IoT devices.
For IoT Security to identify IT and IoT devices, and analyze risk levels and detect security alerts on IoT devices, it must be able to access network traffic metadata. The more data it has to work with, the more accurate and faster it can be. Therefore, it's critical to do two things to collect as much traffic metadata as possible. First, design your network strategically so that Prisma Access sees all traffic from your remote sites, including DHCP traffic. Then apply policy rules to as much traffic as you can and enable logging and log forwarding on these rules to send traffic metadata to Cortex Data Lake.
DHCP traffic is particularly important to IoT Security. It provides IoT Security with useful data, including a mapping of the IP address to MAC address of each DHCP client, which is a critical element of the IP address-to-device mappings used for device identification. To obtain this data, ensure that a DHCP server is in your data center or in a similar centralized site and a DHCP relay agent is on the customer premises equipment (CPE) where the remote network connection terminates at each site. Each relay agent forwards the DHCP messages it receives from DHCP clients through the Prisma Access service infrastructure to the IP address of the DHCP server. On the policy rule allowing DHCP traffic from the remote sites to the DHCP server, be sure logging and log forwarding are enabled so that Prisma Access sends DHCP traffic logs to Cortex Data Lake. In fact, if you have not already done so, enable logging and log forwarding on all policy rules. With log forwarding enabled, Prisma Access sends its logs through Cortex Data Lake, which then streams metadata to IoT Security for analysis.
Prisma Access cannot forward IoT Security logs for Layer 2 traffic or Layer 3 traffic where both the source and destination are in the same site because such traffic never reaches it. Consequently, identifying these devices might take IoT Security longer and its confidence might be lower than it would if a firewall was positioned directly on the network and had access to these types of traffic.
After IoT Security has sufficient information to identify devices from their network behavior, it provides Prisma Access with IP address-to-device mappings and Panorama with policy recommendations that the Panorama administrator can import and then push to Prisma Access to enforce policy on IoT device traffic. In addition, Prisma Access downloads device dictionary files from the update server. The device dictionary lists various device attributes with which the Panorama administrator can construct Security policy rules. The combination of IP address-to-device mappings, policy recommendations, and device dictionary files comprise the elements of the Device-ID feature introduced in PAN-OS 10.0.
Required Panorama Configuration
Check that you have enabled Enhanced Application Logs on your log forwarding profiles.
- Log in to Panorama and selectunder theObjectsLog ForwardingRemote_Network_Device_Groupdevice group or a parent device group.
- Open your log forwarding profiles and make sure thatEnable enhanced application logging to Cortex Data Lakeis selected.
Requirements for using IoT Security with Prisma Access
To use the IoT Security add-on with Prisma Access, check that your deployment meets the following requirements:
- Prisma Access is running the Prisma Access 2.0-Innovation release or later.
- You have purchased and activated licenses for Cortex Data Lake and the IoT Security add-on for Prisma Access.
- For a deployment in the United States, the region for the Cortex Data Lake that Prisma Access uses and the IoT Security app isUnited States - Americas. For a deployment in the EU, Cortex Data Lake is in one of the three EU locations (Germany - Europe,Netherlands - Europe, orUK - Europe) and IoT Security is inGermany - EU.
- You’re using Panorama 10.0 or later to manage Prisma Access.With a mixed deployment of Prisma Access and on-premises next-generation firewalls, you must use the same Panorama management system to manage them and the same IoT Security tenant for both.
- DHCP is being served from a data center or from some other central site.
- The Prisma Access infrastructure provides routing from remote sites to data center resources, which include the DHCP server.
- A DHCP relay agent on the VPN terminator at all remote sites points to the IP address of the DHCP server in the data center.
- Security policy rules in Prisma Access control traffic to the Internet, the data center, and other remote sites. Logging is enabled on these policies and Prisma Access forwards logging data to Cortex Data Lake, which streams it to IoT Security.IoT Security uses Enhanced Application logs (EALs), traffic logs (which include DHCP traffic), threat logs, and wildfire logs. Make sure that your policy rules have logging enabled and are forwarding EALs and traffic logs to Cortex Data Lake. Although the last two log types are not required for IoT Security to function, we recommend getting licenses for threat prevention and Wildfire and forwarding their logs as well because they help improve risk assessment and malware detection.
Once these requirements are met, use IoT Security to monitor traffic metadata, identify IoT devices, detect vulnerabilities, discover threats, and prepare policy rule recommendations. Import policy rule recommendations from IoT Security into Panorama or configure Device-ID policy rules directly in Panorama and then push them to Prisma Access for policy enforcement on IoT device traffic.
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