Configure the Viptela Remote Network
Configure the remote network between the Viptela SD-WAN and Prisma Access by completing the steps in the following workflows:
Create a Remote Network Configuration in Prisma Access
You can configure the IPSec tunnel in Prisma Access before you perform the IPSec tunnel configuration in Viptela.
Before you start, get the IP address of the Viptela SD-WAN device that you will be using as the other side of the remote network connection; you enter this information in your
- SelectandNetworkNetwork ProfilesIPSec CryptoAddanIPSec Crypto Profile, specifying supportedEncryptionandAuthenticationsettings; then clickOK.Be sure that you have selected theRemote_Network_Templatein theTemplatesdrop-down at the top of the page.
- SelectandNetwork ProfilesIKE CryptoAddanIKE Crypto Profilespecifying supportedDH Group,Encryption, andAuthenticationsettings; then clickOK.
- SelectandNetwork ProfilesIKE GatewaysAddanIKE Gateway.
- Specify the following values in theGeneraltab:
- Select aPeer IP Address TypeofIPand enter the IP address of the Viptela SD-WAN device that you will be using as the other side of the remote network connection as thePeer Address.
- If using a pre-shared key for the IPSec tunnel, specify aPre-shared Key.
- Specify aPeer Identificationof eitherIP AddressorUser FQDN.Be sure that you match the settings you specify here when you configure the device used to terminate the other side of the Viptela IPSec tunnel.
- Select the following values in theAdvanced Optionstab:
- SelectEnable NAT Traversal.NAT traversal is required because the Viptela SD-WAN uses the IP address from the LAN side of the SD-WAN device as the source interface. As a result, all traffic undergoes NAT translation on the interface used for the remote network connection (that is, the WAN side of the Viptela SD-WAN).With the NAT Traversal option enabled, Prisma Access performs UDP encapsulation on IKE and UDP protocols, enabling them to pass through intermediate NAT devices.
- ClickOKwhen complete.
- SelectIPSec TunnelsandAddanIPSec Tunnel, specifying theIKE GatewayandIPSec Crypto Profileyou just created.
- (Optional) SelectTunnel Monitorand specify aDestination IPaddress that can monitor reachability of the IPSec tunnel between Prisma Access and the Viptela SD-WAN.
- Make a note of all IKE and IPSec settings you used in the tunnel configuration.
- Onboard your remote network connection and enter the following values:
- Specify aName,Bandwidth, andRegion.
- Specify aBranch IP Subnetthat is significant to Viptela.A /30 subnet is sufficient for a Viptela-Prisma Access SD-WAN integration, because you need only two IP addresses for this configuration:
- 10.10.10.1, which you specified as the IP address for the ge0/4 interface.
- Commit the configuration changes to Panorama and push the configuration out to Prisma Access for remote networks.
- Click.CommitCommit to Panorama
- Click. ClickCommitCommit and Push, and select both Prisma Access for remote networks and Prisma Access for service setup to push the configuration out to the service.Edit SelectionsPrisma Access
- Complete configuration of theIKE Gateway.
- Select, click thePanoramaCloud ServicesStatusNetwork DetailsRemote Networkstab, and make a note of theService IP Address.
- Selectand select theNetwork ProfilesIKE GatewaysIKE Gatewayyou specified in Step 1.c.
- ChangeLocal IdentificationtoIP addressand add theService IP Addressyou just retrieved (22.214.171.124 in this example).Be sure to make a note of theService IP Address; you must configure this as the peer IP address to set up the IPSec tunnel between the Viptela SD-WAN device and Prisma Access.
Create a Remote Network Connection in Viptela
Use the following steps to configure the IPSec tunnel in Viptela. The examples in this section use command-line interface (CLI) commands.
This configuration completes the remote network connection between Prisma Access and the Viptela SD-WAN. The following figure shows what you define in the Viptela side:
- On the LAN side of the Viptela SD-WAN device, create a ge0/0 interface with an IP address of 10.50.50.1. This matches the IP address you specified when you configured theIKE Gatewayin Prisma Access.The Viptela SD-WAN performs NAT on the source IP address for the LAN (126.96.36.199).
- On the remote network tunnel (WAN) side, create an interface namedipsec2with a type, slot, and port of ge0/4 whose IP address is 10.10.10.1/30.This address must be within the subnet range you specified for theBranch IP Subnetwhen you onboarded your remote network in Prisma Access. In this example, the administrator specified aBranch IP Subnetof 10.10.10.0/30 in Prisma Access, and you use the other available IP address (10.10.10.1/30) on the Viptela side of the remote network connection.
- Specify atunnel-destinationIP address that matches the Prisma AccessService IP Address. This example uses188.8.131.52.
- Specify aloopbackIP address that Prisma Access can use for tunnel monitoring.In this example, the administrator configured aloopback100interface with an IP address of 10.1.50.1/32. This value matches theTunnel MonitorDestination IPaddress you specified in theIPSec Tunnelconfiguration that you configured in Prisma Access.
- Open a CLI session with the Viptela SD-WAN device and enter the following commands to define the control plane for the Viptela Overlay Management Protocol (OMP).The following commands enable a graceful restart for the OMP and advertise static and connected routes.omp no shutdown graceful-restart advertise connected advertise static
- Define the security types for the IPSec tunnel.The following commands enable the AH-SHA1 HMAC and ESP HMAC-SHA1 authentication types.security ipsec authentication-type sha1-hmac ah-sha1-hmac
- Configure VPNs to segment the Viptela overlay network.The following commands create a VPNVPN 0namedTransport VPNand associates thege0/4interface with this VPN. You use this interface and VPN for the Viptela SD-WAN side of the remote network tunnel (IPSec tunnel) between Viptela and Prisma Access.vpn 0 name "Transport VPN" interface ge0/4 ip dhcp-client tunnel-interface encapsulation ipsec color biz-internet allow-service all no allow-service bgp allow-service dhcp allow-service dns allow-service icmp no allow-service sshd no allow-service netconf no allow-service ntp no allow-service ospf no allow-service stun
- Enter theno shutdowncommand to enable thege0/4interface.
- Create another VPN namedVPN 1, associate thege0/0interface with this VPN, then define parameters for it.The following example defines the parameters to allow the Viptela SD-WAN to route traffic from the LAN to its ge0/0 interface.vpn 1 interface ge0/0 ip address 10.50.50.1/24 no shutdown dhcp-server address-pool 10.50.50.0/24 exclude 10.50.50.1 offer-time 600 lease-time 86400 admin-state up options default-gateway 10.50.50.1 dns-servers 184.108.40.206 220.127.116.11
- Create an interface namedipsec2and apply it to thege0/4interface. These commands define the parameters for the remote network tunnel between the Viptela SD-WAN and Prisma Access.Enter the following values:
interface ipsec2 ip address 10.10.10.1/30 tunnel-source-interface ge0/4 tunnel-destination 18.104.22.168 ike version 1 mode main rekey 14400 cipher-suite aes128-cbc-sha1 group 2 authentication-type pre-shared-key pre-shared-secret secretkey ! ! ! ipsec rekey 3600 replay-window 512 cipher-suite aes256-cbc-sha1
- Enter anip addressto allow the Viptela SD-WAN to route traffic to Prisma Access.This address must be within the subnet range you specified for theBranch Subnetwhen you onboarded your remote network in Prisma Access. A /30 address is sufficient to allow routing to Prisma Access.
- Specify the sametunnel-source-interfacethat you used forVPN 0(ge0/4in this example).
- Specify atunnel-destinationusing theService IP Addressfrom Prisma Access. This example uses22.214.171.124as theService IP Address.
- Make sure that theikeandipsecparameters that you specify match the parameters you specified in Prisma Access.
- Enter apre-shared-secretthat matches thePre-shared key(PSK) that you entered in Prisma Access. This example uses a PSK ofsecretkey.
- Enter theno shutdowncommand on the ipsec2 interface to enable it.
- Create a loopback interface to be used for tunnel monitoring.interface loopback100 ip address 10.1.50.1/32 no shutdown
- Create a default route for the network.This route uses the second IP address (10.10.10.2in this example) of the /30 subnet you used when you onboarded your remote network in Prisma Access. The Viptela side of the network can route to this IP address and uses it as a next hop for routing.ip route 0.0.0.0/0 10.10.10.2
- Enter a VPN and give it a name.vpn 512 name "Transport VPN"
- Apply policies for the network.policy app-visibility flow-visibility
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