Configure the Service Infrastructure
Before you can begin setting up Prisma Access to secure your remote networks and/or mobile users, you must configure an infrastructure subnet, which Prisma Access will use to create the network backbone for communication between your service connections, remote networks, and mobile users, as well as with the corporate networks you plan to connect to Prisma Access over service connections. Because a large number of IP addresses will be required to set up the infrastructure, you must use a /24 subnet (for example, 172.16.55.0/24) at a minimum. See Plan the Service Infrastructure and Service Connections for the requirements and guidelines to use when assigning an infrastructure subnet.
- Selectand click the gear icon to edit the Settings.PanoramaCloud ServicesConfigurationService Setup
- On theGeneraltab, specify anInfrastructure Subnet, for example, 172.16.55.0/24.See Plan the Service Infrastructure and Service Connections for the requirements and guidelines to use when assigning an infrastructure subnet.
- Enter theInfrastructure BGP ASyou want to use within the Prisma Access infrastructure. If you want to use dynamic routing to enable Prisma Access to dynamically discover routes to resources on your remote networks and HQ/data center locations, specify the autonomous system (AS) number. If you do not supply an AS number, the default AS number 65534 will be used.
- The templates you add here can help simplify the process of adding new service connections. For example, if you add a template containing existing IPSec configuration settings, such as IPSec tunnel, Tunnel Monitoring, and IPSec Crypto Profile configurations, you can select these configurations when defining the tunnel settings for each service connection rather than having to create the tunnel configuration from scratch. You can optionally edit the predefined Service_Conn_Template with tunnel settings that you can leverage when creating the tunnels from Prisma Access to your corporate network sites.
- Enable Prisma Access to resolve your internal domains.Use this step if you need Prisma Access to be able to resolve your internal domains to access services, such as LDAP servers, on your corporate network via service connections. For example, if you want a DNS lookup for your corporate domain to go exclusively to the corporate DNS server, specify the corporate domain and the corporate DNS servers here.
- Select theInternal Domain Listtab.
- AddtheDomain Names,Primary DNS, andSecondary DNSservers that the cloud service can use to resolve your internal domain names.You can use a wildcard (*) in front of the domains in the domain list, for example *.acme.local or *.acme.com.
- Enable Cortex Data Lake.
- Select theCortex Data Laketab.
- Select aCortex Data Lake Theaterand clickOK.
- Configure the device groups you are using to push settings to Prisma Access with a Log Forwarding profile that forwards the desired log types toPanorama/Cortex Data Lake.The Cloud Services plugin automatically adds the following Log Settings () after a new installation or when removing non-Prisma Access templates from a Prisma Access template stack:DeviceLog Settings
These Log Setting configurations automatically forward System, User-ID, HIP Match, and GlobalProtect logs to Cortex Data Lake.To apply log setting changes, perform the following steps, then commit and push your changes:
- Log Settings for System logs (system-gpcs-default), User-ID logs (userid-gpcs-default), HIP Match logs (hipmatch-gpcs-default), and GlobalProtect logs (gp-prismaaccess-default) are added to the Mobile_User_Template.
- Log Settings for System logs (system-gpcs-default), User-ID logs (userid-gpcs-default), and GlobalProtect logs (gp-prismaaccess-default) are added to the Remote_Network_Template.
- Log Settings for System logs (system-gpcs-default) and GlobalProtect logs (gp-prismaaccess-default) are added to the Service_Conn_Template.
The way you enable log forwarding for other log types depends on the type. For logs that are generated based on a policy match, use a log forwarding profile. See the Cortex Data Lake Getting Started Guide for more information.
- To apply the log setting to the mobile user template, select, click the gear icon to edit the settings, and click OK.PanoramaCloud ServicesConfigurationMobile Users
- To apply the log setting to the remote network template, select, click the gear icon to edit the settings, and click OK.PanoramaCloud ServicesConfigurationRemote Networks
- To apply the log setting to the service connection template, select, click the gear icon to edit the settings, and click OK.PanoramaCloud ServicesConfigurationService Setup
- (Optional) ConfigureAdvancedsettings (routing preferences, symmetric network path options for service connections, and HIP redistribution).
- Specify theRouting Preferenceto use with service connections.You can specify network preferences to use either your organization’s network, or the Prisma Access network, to process the service connection traffic.
Changing the Prisma Access service connection routing method requires a thorough understanding of your organization’s topology and routing devices, along with an understanding of how Prisma Access routing works. We recommend that you read the Routing Preferences for Service Connection Traffic section carefully before changing the routing method from the default setting.
- Default—Prisma Access uses default routing in its internal network.
- Hot potato routing—Prisma Access hands off service connection traffic to your organization’s WAN as quickly as possible.
- Configure theBackbone Routingto use for the service connections.By default, the Prisma Access backbone requires that you have a symmetric network path for the traffic returning from the data center or headquarters location by way of a service connection. If you want to use ECMP or another load balancing mechanism for service connections from your CPE, you can specify Prisma Access to allow asymmetric flows through the Prisma Access backbone.
If you have a new Prisma Access deployment, Palo Alto Networks recommends that you selectasymmetric-routing-onlyor, if you use multiple service connections in a location,asymmetric-routing-with-load-sharingto enable more efficient routing across the Prisma Access backbone. If you have an existing deployment, you should determine the impact of any service connection routing changes before you enable asymmetric routing.
- Selectno-asymmetric-routingto require symmetric flows across the service connection backbone (the default setting).
- Selectasymmetric-routing-onlyto allow Prisma Access to use asymmetric flows across the service connection backbone.
- If you have multiple data centers or headquarters locations, and one or more of those locations have multiple service connections, selectasymmetric-routing-with-load-shareto allow Prisma Access to use asymmetric flows and load balance between the service connections.
- Enable HIP Redistributionto have Prisma Access use service connections to redistribute HIP information from mobile users and users at remote networks.
- Withdraw static routes in the event if a service connection or remote network connection goes down and there is no secondary tunnel by selectingWithdraw Static Routes if Service Connection or Remote Network IPSec tunnel is down.Prisma Access removes the route in the following situations:
If you do not select this check box, Prisma Access keeps the static route if the primary tunnel goes down and there is no secondary tunnel configured.
- The primary tunnel goes down and there is no secondary tunnel.
- If a primary and secondary tunnel is configured, but both go down.
- (Optional) Automatically add a host-specific static route to the static IKE gateway peer for the IPSec tunnel on the Remote Network security processing node (SPN) and Service Connection corporate access node (CAN) by selectingEnable automatic IKE peer host routes for Remote Networks and Service Connections.After you make this selection, IPSec tunnel packets to the static IKE gateways will be routed over the internet.
- (Optional)Specify Outbound Routes for the Service (Max 10)by adding up to 10 prefixes for which Prisma Access adds static routes on all SPNs and CANs. Prisma Access then routes traffic to these prefixes over the internet.
- ClickOKto save the Service Setup settings.
- Commit all your changes to Panorama and push the configuration changes to Prisma Access.
- Click.CommitCommit to Panorama
- Clickand clickCommitPush to DevicesEdit Selections.
- On thePrisma Accesstab, make sureService setupis selected and then clickOK.Prisma Access should automatically select the components that need to be committed.
- ClickPush.If there is a Palo Alto Networks next-generation firewall between the Panorama appliance and the internet, you must add a security policy rule on the firewall to allow thepaloalto-logging-serviceandpaloalto-shared-servicesApp-IDs from the Panorama appliance to the internet. These applications allow SSL-secured communication to Prisma Access and to Cortex Data Lake that the Panorama appliance uses to query logs. If the Panorama appliance is behind a legacy Layer 4 firewall, permit ports 443 and 444 outbound from the Panorama to allow this traffic from the Panorama. Note that opening layer 4 ports instead of using Palo Alto Networks App-IDs is less secure and not recommended.
- Verify that Prisma Access is successfully connected to Cortex Data Lake.
- Selectand verify that the Status isPanoramaCloud ServicesStatusStatusCortex Data LakeOK.If the status isError, click the details link to view any errors.
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