Palo Alto Networks firewall discovery

  • Release version: Zurich
  • Updated March 12, 2026
  • 3 minutes to read
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    Summary of Palo Alto Networks Firewall Discovery

    The ServiceNow Discovery application leverages the Next-Generation Palo Alto Firewall pattern to identify Palo Alto Networks firewalls within your environment. This discovery process utilizes SNMP calls and runs as part of horizontal discovery to populate detailed firewall information into the CMDB.

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    To ensure accurate discovery, updating to the latest Discovery and Service Mapping Patterns application from the ServiceNow Store may be required. Additionally, installing the relevant firewall extension classes and discovery patterns from the ServiceNow Store is necessary to support this functionality.

    Prerequisites

    • Network firewall devices must have SNMP access enabled.
    • SNMP credentials should be configured on the ServiceNow instance.
    • The SNMP system OID record for Palo Alto Networks devices must be added to the ServiceNow instance.
    • Classifier and CMDB class for Palo Alto Firewall must be updated accordingly.
    • MID Server must be synchronized with the discovery pattern.

    Data Model and Collected Information

    The discovery pattern introduces the Palo Alto Firewall Device [cmdbcifirewalldevicepaloalto] CI class, extending the existing firewall device classes. Key data fields collected during discovery include:

    • IP Address, Serial Number, Fully Qualified Domain Name (FQDN)
    • Manufacturer, Model ID, Operational Status
    • Hardware OS and version, Firmware version
    • Short description of the device

    Additionally, related CIs such as Network Adapters, IP Addresses, and DNS Names are discovered with relevant attributes like MAC address, netmask, alias, and references linking back to the Palo Alto Firewall Device.

    CI Relationships and References

    The discovery establishes important relationships to represent the firewall environment accurately in the CMDB, including:

    • Palo Alto Firewall Device owns Network Adapters and IP Addresses.
    • The firewall device uses Router Interfaces.
    • Network Adapters own IP Addresses.

    References between CI fields such as serial numbers, configuration items, and NICs ensure data integrity and enable detailed tracking and management.

    Benefits for ServiceNow Customers

    By implementing Palo Alto Networks firewall discovery, customers can achieve automated and accurate population of firewall data in their CMDB, enabling better asset management, security oversight, and operational efficiency. This also facilitates improved visibility into firewall configurations and relationships, supporting IT service management and security operations.

    The ServiceNow Discovery application uses the Next-Generation Palo Alto Firewall pattern to find Palo Alto Networks firewalls. Discovering some of these resources may require updating to the latest version of the Discovery and Service Mapping Patterns application from the ServiceNow Store.

    The discovery pattern uses a set of SNMP calls to find the Palo Alto Networks firewalls. Discovery uses the pattern to run horizontal discovery.

    Request apps on the Store

    Visit the ServiceNow Store website to view all the available apps and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the ServiceNow Store version history release notes.

    Palo Alto Networks firewall data model

    The Next-Generation Palo Alto Firewall pattern introduces the following CI class that extends an existing CMDB class.

    Table 1. CI class introduced by this pattern
    CI class Extends from
    Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto] Firewall Device [cmdb_ci_firewall_device]

    Prerequisites

    • Ensure that your network firewall device has SNMP access.
    • On the ServiceNow instance, configure SNMP credentials. For more information, see .
    • Add the SNMP system OID record for the Palo Alto Networks device to the ServiceNow instance. Update the following:
      • Classifier: Palo Alto Firewall
      • Class: Palo Alto Firewall Device
    • Deploy the pattern as follows:
      1. Download and install Firewall extension classes from the ServiceNow Store. The app adds the new CMDB classes required for network firewall discovery.
      2. Download and install the discovery pattern from the ServiceNow Store.
      3. Sync the pattern with the appropriate MID Server.

    Data collected by Discovery during horizontal discovery

    Discovery populates the data in the CMDB when running the Next-Generation Palo Alto Firewall Pattern.

    Table 2. Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto]
    Field Description
    IP Address [ip_address] IP address of the Palo Alto device.
    Serial number [serial_number] Serial number of the Palo Alto device.
    Fully qualified domain name [fqdn] Fully qualified domain name (FQDN) of the Palo Alto device.
    Manufacturer [manufacturer] Palo Alto device manufacturer.
    Model ID [model_id] Model ID of the Palo Alto device.
    Operational status [operational_status] Indicates whether the Palo Alto device is in active state.
    Hardware OS [hardware_os] OS running on the hardware.
    Hardware OS Version [hardware_os_version] OS version running on the hardware.
    Description [short_description] Short description of the Palo Alto device.
    Firmware version [firmware_version] Palo Alto device firmware version.
    Table 3. Network Adapter [cmdb_ci_network_adapter]
    Field Description
    IP Address [ip_address] IP address of the network adapter.
    Alias [alias] The user-assigned name for the network adapter.
    Netmask [netmask] Netmask of the network adapter.
    MAC address [mac_address] MAC address of the network adapter.
    Name [name] Name of the network adapter.
    Configuration Item [cmdb_ci] References the Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto] table.
    Table 4. IP Address [cmdb_ci_ip_address]
    Field Description
    IP Address [ip_address] IP address of the Palo Alto firewall.
    Netmask [netmask] Netmask of the Palo Alto firewall.
    Nic [nic] References the Network Adapter [cmdb_ci_network_adapter] table.
    Table 5. DNS Name [cmdb_ci_dns_name]
    Field Description
    Name [name] Domain Name System (DNS) name of the Palo Alto firewall device.
    IP Address [ip_address] Host IP address.

    CI relationships

    The Next-Generation Palo Alto Firewall pattern creates the following relationships and references to support Palo Alto Networks firewall discovery. References link to records in other tables and don't appear in the CI Relationship [cmdb_rel_ci] table.

    Table 6. CI relationships
    CI Relationship CI
    Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto] Owns::Owned by Network Adapter [cmdb_ci_network_adapter]
    Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto] Owns::Owned by IP Address [cmdb_ci_ip_address]
    Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto] Uses::Used by Router Interface [dscy_router_interface]
    Network Adapter [cmdb_ci_network_adapter] Owns::Owned by IP Address [cmdb_ci_ip_address]
    Table 7. CI references
    CI Field Referenced CI
    Serial Number [cmdb_serial_number] Configuration item [configuration_item] Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto]
    Network Adapter [cmdb_ci_network_adapter] Configuration Item [cmdb_ci] Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto]
    Router Interface [dscy_router_interface] Configuration Item [cmdb_ci] Palo Alto Firewall Device [cmdb_ci_firewall_device_palo_alto]
    IP Address [cmdb_ci_ip_address] Nic [nic] Network Adapter [cmdb_ci_network_adapter]