IP Address Pools for a GlobalProtect Mobile Users Deployment
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Prisma Access

IP Address Pools for a GlobalProtect Mobile Users Deployment

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IP Address Pools for a GlobalProtect Mobile Users Deployment

Learn how to allocate IP address pools in the Prisma Access Mobile Users—GlobalProtect deployment.
Where Can I Use This?What Do I Need?
  • Prisma Access (Managed by Strata Cloud Manager)
  • Prisma Access (Managed by Panorama)
  • Prisma Access license
Make sure that you have specified an IP address pool that allows enough coverage for the mobile users in your organization. It is important to remember that each unique user can use multiple devices to connect to Prisma Access at the same time, and each connected device requires a unique IP address from the pool. The addresses in this pool must not overlap with other address pools you use internally or with the IP subnet you assign when you Enable the Service Infrastructure.
We recommend that the number of IP addresses in the pool is 2 times the number of mobile user devices that will connect to Prisma Access. If your organization has a bring your own device (BYOD) policy, or if a single user has multiple user accounts, make sure that you take those extra devices and accounts into consideration when you allocate your IP pools. If your pool space is limited, you can specify a smaller address pool; however, if your IP address pool reaches its limit, additional mobile user devices will not be able to connect.
The UI validates that you enter valid IP subnets (for example, if you enter a pool with a subnet of less than /23, it will prompt you to change it). However, it does not check to ensure that you have allocated sufficient IP addresses for your deployment.
This validation is not available if you configure locations using CLI. If you deploy all locations using CLI, we recommend that you add a /18 address in the Worldwide pool for mobile users.
Prisma Access checks your configuration to make sure that you have specified the following minimum IP address pool:
  • A minimum of /23 (512 IP addresses) is required for either a Worldwide or regional address pool.
  • If an existing location is converted to a compute location, that location requires a minimum /23 subnet after the conversion.
  • If you do not onboard any Prisma Access gateways in a region, an IP address pool for that region is not required. For example, if you specify gateways in the US East, US Northwest, and US Northeast locations, you need to only specify an IP address pool for the North America & South America region. Conversely, if you enable mobile user locations in Europe without specifying either a Worldwide address pool or an IP address pool in Africa, Europe, & Middle East, your deployment will fail.
  • GlobalProtect mobile users consume the IP addresses in the location group first, then theater-specific IP addresses, then Worldwide IP addresses. For example, if you specify a pool for a location group and Worldwide, and you then exhaust the available IP addresses in the location group pool, Prisma Access then takes IP addresses from the Worldwide pool to use in that location group.
    If you specify more than one block of IP address pools, Prisma Access uses the pools in the order that you entered them during mobile user setup.
Increasing the subnet mask on an existing mobile user IP address pool (for example, if you change 10.6.0.0/18 to 10.6.0.0/17), or changing the region of an existing IP address pool, can cause issues for existing connected users.
If your users encounter this issue, perform one or more of the following actions:
  • Have the GlobalProtect mobile user refresh their connection.
    Any changes to the GlobalProtect IP address pool scope (increasing the existing pool or using a completely different pool) would cause issues to the existing connected users, which can only be resolved after a successful GlobalProtect refresh where the app acquires the IP address from the newly allocated pool.
  • Add another address block to the mobile users IP address pool instead of changing the subnet in the existing pool.
    For example, instead of changing a subnet in the pool from /18 to /17, consider adding another /18 address to the existing pool and leave the existing pool intact.