Cloud Management
Focus
Focus
Prisma Access

Cloud Management

Table of Contents


Cloud Management

Configure service connections for
Prisma Access (Managed by Strata Cloud Manager)
.
To configure a service connection for
Prisma Access (Managed by Strata Cloud Manager)
to allow access to private apps or internal corporate resources, complete the following steps.
  1. Select
    Manage
    Service Connections
    Service Connections Setup
    .
    If you're using Strata Cloud Manager, go to
    Workflows
    Prisma Access
    Setup
    Service Connections
    and
    Add Service Connection
    .
  2. Give the service connection a descriptive
    Name
    .
  3. Select the
    Prisma Access
    Location
    where your HQ or data center is located.
  4. (
    Optional
    ) Enable source NAT for Mobile Users—GlobalProtect IP pool addresses, IP addresses in the Infrastructure subnet, or both.
    You can specify a subnet at one or more service connections that are used to NAT traffic between
    Prisma Access
    GlobalProtect mobile users and private applications and resources at a data center.
    • Data Traffic source NAT
      —Performs NAT on Mobile User IP address pool addresses so that they are not advertised to the data center, and only the subnets you specify at the service connections are advertised and routed in the data center.
    • Infrastructure Traffic source NAT
      —Performs NAT on addresses from the Infrastructure subnet so that they are not advertised to the data center, and only those subnets you specify at the service connections are advertised and routed in the data center.
    • User-ID
      —When selected,
      Prisma Access
      uses this service connection for identity redistribution.
      User-ID Redistribution Management
      —Sometimes, granular controls are needed for user-ID redistribution in particularly large scale Prisma Access deployments. User-ID Redistribution Management lets you manually disable the default identity redistribution behavior for certain service connections by removing the check mark in the
      User ID
      column, and then select specific service connections to be used for identity redistribution. It's not necessary to do this for most configurations. Contact Palo Alto Networks support to activate this functionality.
    • Source NAT Pool
      —Specify the IP address pool used to perform NAT on the mobile user IP address pool, Infrastructure subnet, or both.
      • Use a private IP (RFC 1918) subnet or a suitable subnet that is routable in your routing domain.
      • Make sure that the subnet does not overlap with the Mobile Users—GlobalProtect IP address pool, the Infrastructure subnet, or any other source NAT addresses used for this tenant.
      • Enter a subnet between /25 and /32.
  5. Select an
    IPSec Tunnel
    . If you have not yet set up a primary or secondary IPSec Tunnel, select
    Set Up
    and follow the steps below.
    1. Give the tunnel a descriptive
      Name
      .
    2. Select the
      Branch Device Type
      for the IPSec device and the HQ or data center that you’re using to establish the tunnel with
      Prisma Access
      .
    3. For the
      Branch Device IP Address
      , choose to use either a
      Static IP
      address that identifies the tunnel endpoint or a
      Dynamic
      IP address.
      If you set the
      Branch Device IP Address
      to
      Dynamic
      , you must also add the IKE ID for the HQ or data center (
      IKE Local Identification
      ) or for
      Prisma Access
      (
      IKE Peer Identification
      ) to enable the IPSec peers to authenticate.
      Because you don't have the values to use for the
      Prisma Access
      IKE ID (
      IKE Peer Identification
      ) until the service connection is fully deployed, you would typically want to set the IKE ID for the HQ or data center (
      IKE Local Identification
      ) rather than the
      Prisma Access
      IKE ID.
  6. Turn on
    Tunnel Monitoring
    .
    Enter a Tunnel Monitoring
    Destination IP
    address on the HQ or data center network for
    Prisma Access
    to determine whether the tunnel is up and, if your branch IPSec device uses a policy-based, enter the associated
    Proxy ID
    .
    The tunnel monitoring IP address you enter is automatically added to the list of branch subnetworks.
  7. Save
    the tunnel settings.
  8. To add or adjust routing and Quality of Service settings, go to
    Manage
    Service Connections
    Service Connections Setup
    Routing and QoS
    .
    If you're using Strata Cloud Manager, go to
    Workflows
    Prisma Access
    Setup
    Service Connections
    and
    Add Service Connection
    .
    Set Up
    or
    Edit
    the
    Routing
    or
    QoS
    settings.
  9. Configure static routes.
    1. For static routes to route traffic to and from your HQ or data center,
      Add
      the IP subnets or IP addresses that you want to secure at the branch.
      If you make any changes to the IP subnets on your HQ or data center network, you must manually update the static routes.
  10. Configure dynamic routing.
    1. For dynamic routing to advertise HQ or data center subnets,
      Enable BGP for Dynamic Routing
      .
    2. (
      Optional
      ) Select an
      MRAI Timer
      value.
      BGP routing offers a timer you can use to tailor BGP routing convergence in your network called the
      Minimum Route Advertisement Interval (MRAI)
      . MRAI acts to rate-limit updates on a per-destination basis, and the BGP routers wait for at least the configured MRAI time before sending an advertisement for the same prefix. A smaller number gives you faster convergence time but creates more advertisements in your network. A larger number decreases the number of advertisements that can be sent, but can also make routing convergence slower. You decide the number to put in your network for the best balance between faster routing convergence and fewer advertisements.
      Configure an MRAI range of between 1 and 600 seconds, with a default value of 30 seconds.
    3. To reduce the number of mobile user IP subnet advertisements over BGP to your customer premises equipment (CPE), specify
      Prisma Access
      to summarize the subnets before it advertises them by selecting
      Summarize Mobile User Routes before advertising
      .
      By default,
      Prisma Access
      advertises the mobile users IP address pools in blocks of /24 subnets; if you summarize them,
      Prisma Access
      advertises the pool based on the subnet you specified. For example, Prisma Access advertises a public user mobile IP pool of 10.8.0.0/20 using the /20 subnet, rather than dividing the pool into subnets of 10.8.1.0/24, 10.8.2.0/24, 10.8.3.0/24, and so on, before advertising them. Summarizing these advertisements can reduce the number of routes stored in CPE routing tables. For example, you can use IP pool summarization with cloud VPN gateways (Virtual Private Gateways (VGWs) or Transit Gateways (TGWs)) that can accept a limited number of routes.
    4. (
      Optional
      ) to have
      Prisma Access
      originate a default route advertisement for the remote network using eBGP, select
      Advertise the Default Route
      . Be sure that your network does not have another default route being advertised by BGP, or you could introduce routing issues in your network.
    5. (
      Optional
      ) If you configured a secondary WAN and you need to change the peer address for the secondary (backup) BGP peer, select
      Use different BGP Peer for Secondary Tunnel
      and enter a unique Peer and, optionally, Local IP address for the secondary WAN.
    6. To add a community for service connections) to the outbound prefixes from the eBGP peers at the customer premises equipment (CPE), set
      Add no-export community
      to
      Enabled Out
      . This capability is
      Disabled
      by default.
    7. (
      Optional
      ) Select
      Do Not Export Routes
      to prevent
      Prisma Access
      from forwarding routes into the HQ or data center.
      By default,
      Prisma Access
      advertises all BGP routing information, including local routes and all prefixes it receives from other service connections, remote networks, and mobile user subnets. Select this check box to prevent
      Prisma Access
      from sending any BGP advertisements, but still use the BGP information it receives to learn routes from other BGP neighbors.
      Because
      Prisma Access
      does not send BGP advertisements, if you select this option you must configure static routes on your on-premises equipment to establish routes back to Prisma Access.
    8. Enter the
      Peer IP Address
      assigned as the Router ID of the eBGP router on the HQ or data center network.
    9. Enter the
      Peer AS
      , the autonomous system (AS) for your network.
      Use and RFC 6996-compliant BGP Private AS number.
    10. Enter the
      Local IP Address
      that
      Prisma Access
      uses as its Local IP address for BGP.
      A local address is only required if your HQ or data center device requires it for BGP peering to be successful. Make sure the address you specify does not conflict or overlap with IP addresses in the infrastructure subnet or subnets in the remote network.
    11. Enter a
      Secret
      password to authenticate BGP peer communications.
    12. Select
      Confirm Secret
      .
  11. (
    Optional
    ) Configure QoS.
    To start, add a QoS Profile to define the QoS classes that will shape traffic between the HQ or data center and
    Prisma Access
    . You’ll then create a QoS policy rule and add the profile to the rule, to enforce QoS on matching HQ or data center traffic.
    1. Enter a name for your
      QoS Profile
      .
    2. Select
      Create New
      .
    3. Set the maximum throughput (in Mbps) for traffic leaving the HQ or data center service connection as the
      Egress Max
      .
      You can specify a value up to the maximum licensed bandwidth of your HQ or data center.
    4. Set the guaranteed bandwidth as the
      Egress Guaranteed
      (in Mbps).
      Any traffic that exceeds the Egress Guaranteed value is best effort but not guaranteed. Any bandwidth that is guaranteed but unused remains available to all traffic.
    5. Define each QoS
      Class
      and attach it to a policy rule.
      A QoS class determines the priority and bandwidth for traffic matching a QoS policy rule. There are up to eight definable QoS classes in a single QoS Profile. Unless otherwise configured, traffic that does not match a QoS class is assigned a class of 4.
    6. Configure the
      Priority
      of a QoS Class.
      Priorities include real-time, high, medium, or low.
    7. Configure the
      Egress Max
      value.
      The egress max value for a QoS class, or the combined egress max values for multiple QoS classes, must not exceed the egress max value for the QoS Profile.
    8. Configure the
      Egress Guaranteed
      value.
      The guaranteed bandwidth assigned to the QoS class isn't reserved for that class; unused bandwidth remains available to all traffic. Any class traffic that exceeds the egress-guaranteed value is best effort but not guaranteed.

More IKE Options

Based on the IPSec device type you selected,
Prisma Access
provides a recommended set of ciphers and a key lifetime for the IKE Phase 1 key exchange process between the device at your HQ/DC and
Prisma Access
. You can use the recommended settings, or customize the settings as needed for your environment.
  • Select an
    IKE Protocol Version
    for your IPSec device and
    Prisma Access
    to use for IKE negotiation.
    If you select
    IKEv1 Only Mode
    ,
    Prisma Access
    can use only the IKEv1 protocol for the negotiation. If you select
    IKEv2 Only Mode
    ,
    Prisma Access
    can use only the IKEv2 protocol for the negotiation. If you select
    IKEv2 Preferred Mode
    ,
    Prisma Access
    uses the IKEv2 protocol only if your IPSec device also supports IKEv2. If your IPSec device does not support IKEv2,
    Prisma Access
    falls back to using the IKEv1 protocol.
  • Add an
    IKEv1 Crypto Profile
    to customize the IKE crypto settings that define the encryption and authentication algorithms used for the key exchange process in IKE Phase 1.
    Prisma Access
    automatically uses a default IKE Crypto profile based on the
    Branch Device Type
    that’s being used to establish this tunnel.
    • Encryption
      —Specify the encryption algorithm used in the IKE SA negotiation.
      Prisma Access
      supports the following encryption algorithms: 3des (168 bits), aes-128-cbc (128 bits), aes-192-cbc (192 bits), aes-256-cbc (256 bits), and DES (56 bits). You can also select null (no encryption).
    • Authentication
      —Specify the authentication algorithm used in the IKE SA negotiation.
      Prisma Access
      supports the following authentication algorithms: sha1 (160 bits), sha256 (256 bits), sha384 (384 bits), sha512 (512 bits), and md5 (128 bits). You can also select null (no authentication).
    • DH Group
      —Specify the Diffie-Hellman (DH) groups used to generate symmetrical keys for IKE in the IKE SA negotiation. The Diffie-Hellman algorithm uses the private key of one party and the public key of the other to create a shared secret, which is an encrypted key that both VPN tunnel peers share.
      Prisma Access
      supports the following DH groups: Group 1 (768 bits), Group 2 (1,024 bits—default), Group 5 (1,536 bits), Group 14 (2,048 bits), Group 19 (256-bit elliptic curve group), and Group 20 (384-bit elliptic curve group). For the strongest security, select the group with the highest number.
    • Lifetime
      —Specify the unit and amount of time for which the IKE Phase 1 key is valid (default is 8 hours). For IKEv1, the security association (SA) isn't actively re-keyed before the key lifetime expires. The IKEv1 Phase 1 re-key triggers only when the SA expires. For IKEv2, the SA must be re-keyed before the key lifetime expires. If the SA isn't re-keyed upon expiration, the SA must begin a new Phase 1 key.
    • IKEv2 Authentication Multiple
      —Specify the value that is multiplied by the key lifetime to determine the authentication count (range is 0-50; default is 0). The authentication count is the number of times that the security processing node can perform IKEv2 IKE SA re-key before it must start over with IKEv2 reauthentication. The default value of 0 disables the reauthentication feature.
  • Enable
    IKE Passive Mode
    so that
    Prisma Access
    only response to IKE connections and does not initiate them.
  • IKE NAT Traversal
    is turned on by default.
    This means that UDP encapsulation is used on IKE and UDP protocols, enabling them to pass-through network address translation (NAT) devices that are between the IPSec VPN tunnel endpoints.

More IPSec Options

Based on the IPSec device type you selected,
Prisma Access
provides a recommended set of IPSec protocol and key lifetime settings to secure data within the IPSec tunnel between your IPSec device and
Prisma Access
in IKE Phase 2 for the security association (SA). You can use the recommended settings, or customize the settings as needed for your environment.
  • Customize the
    IPSec Crypto Profile
    to define how data is secured within the tunnel when Auto Key IKE automatically generates keys for the IKE SAs during IKE Phase 2.
    Prisma Access
    automatically configures a default IPSec Crypto profile based on the
    Branch Device Type
    vendor. You can either use the default profile or create a custom profile.
    • IPSec Protocol
      —Secure the data that traverses the VPN tunnel. The Encapsulating Security Payload (
      ESP
      ) protocol encrypts the data, authenticates the source, and verifies the data integrity. The Authentication Header (
      AH
      ) protocol authenticates the source and verifies the data integrity.
      If you use
      ESP
      as the IPSec protocol, also specify the
      Encryption
      algorithm used in the IPSec SA negotiation.
      Prisma Access
      supports the following encryption algorithms: aes-256-gcm (256 bits), aes-256-cbc (256 bits), aes-192-cbc (192 bits), aes-128-gcm (128 bits), aes-128-cbc (128 bits), 3des (168 bits), and DES (56 bits). You can also select null (no encryption).
  • Authentication
    —Specify the authentication algorithm used in the IPSec SA negotiation.
    Prisma Access
    supports the following authentication algorithms: sha1 (160 bits), sha256 (256 bits), sha384 (384 bits), sha512 (512 bits), and md5 (128 bits). If you set the IPSec Protocol to ESP, you can also select none (no authentication).
  • DH Group
    —Specify the Diffie-Hellman (DH) groups for IKE in the IPSec security association (SA) negotiation.
    Prisma Access
    supports the following DH groups: Group 1 (768 bits), Group 2 (1,024 bits—default), Group 5 (1,536 bits), Group 14 (2,048 bits), Group 19 (256-bit elliptic curve group), and Group 20 (384-bit elliptic curve group). For the strongest security, select the group with the highest number. If you don’t want to renew the key that
    Prisma Access
    creates during IKE phase 1, select
    no-pfs
    (no perfect forward secrecy). If you select this option,
    Prisma Access
    reuses the current key for the IPSec SA negotiation.
  • Lifetime
    —Specify the unit and amount of time during which the negotiated key is valid (default is 1 hour).
  • Lifesize
    —Specify the unit and amount of data that the key can use for encryption.

Verify Service Connection Status

To verify that the service connection has been successfully set up, select
Manage > Service Setup > Service Connections > Sites
and check that the
Status
is
OK
.
If you're using Strata Cloud Manager, go to
Workflows
Prisma Access
Setup
Service Connections
.
If the status isn't
OK
, hover over the Status icon to view any errors.
The
Sites
area allows you to view all onboarded service connections, along with their status and other details about them.
Site
  • Name
    —The name of the service connection.
  • Active/Backup
    —The active and backup locations of the service connection.
  • Subnets
    —The assigned infrastructure subnets of the service connection.
Status
  • Tunnel
    —The operational status of the connection between
    Prisma Access
    and your service connection.
  • Config
    —The status of your last configuration push to service. If the local configuration and the configuration in the cloud match, the Config Status is
    In sync
    . If you have made a change locally, and not yet pushed the configuration to the cloud, this may display the status
    Out of sync
    . Hover over the status indicator for more detailed information. After committing and pushing the configuration to
    Prisma Access
    , the Config Status changes to
    In sync
    .
Prisma Access
  • Location
    —The location where the service connection is deployed.
  • Service IP
    —The IP address of the service connection.
  • EBGP Router
    —The IP address of the EBGP Router in the service connection.
Links
  • BGP IPv4
    —The status of the BGP IPv4 routing in the service connection.
  • BGP IPv6
    —The status of the BGP IPv6 routing in the service connection.
  • IPSec Tunnel
    —The IPSec tunnel of your service connection. The first IPSec tunnel you establish will be the
    (Primary)
    tunnel. If you established a second IPSec tunnel it will be the
    (Secondary)
    tunnel.
  • Peer IP Address
    —The gateway IP address of the service connection.


Recommended For You