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    Explicit Proxy Configuration Guidelines
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    5. Mobile Users: Explicit Proxy
    6. Explicit Proxy Configuration Guidelines
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    Prisma Access

    Explicit Proxy Configuration Guidelines

    Table of Contents

    Explicit Proxy Configuration Guidelines

    Describes the software and network requirements you need to successfully deploy Prisma Access Explicit Proxy.
    Where Can I Use This?What Do I Need?
    • Prisma Access (Managed by Strata Cloud Manager)
    • Prisma Access (Managed by Panorama)
    • Prisma Access license
    System Requirements and Supported Features
    These are the system requirements and supported features for the different connection methods you can use with Explicit Proxy.
    Agentless SAMLAgentless KerberosProxy Mode on Agent (requires GP 6.2 or later)Proxy Mode on Remote Networks
    Applications and OS Support
    Traffic Type Internet and public SaaS traffic onlyInternet and public SaaS traffic onlyInternet and public SaaS traffic onlyInternet and public SaaS traffic only
    Protocol SupportsProxy aware HTTP or HTTPSProxy aware HTTP or HTTPSProxy aware HTTP or HTTPSProxy aware HTTP or HTTPS
    Transport Channel to Prisma AccessHTTP ConnectHTTP ConnectHTTP Connect inside TLSHTTP Connect inside IPSec from branch to remote network security processing node (SPN)
    Environments SupportedWindows, Mac, Linux, ChromeOS, VDI
    Windows, Mac, Linux,
    ChromeOS, VDI
    		Windows and Mac
    Windows, Mac, Linux,
    ChromeOS, VDI
    App SupportProxy aware HTTP(s) appsAny app that honors a PAC file or system proxy setting and supports Kerberos Proxy aware HTTP(s) appsProxy aware HTTP(s) apps
    Browser SupportChrome⁂, Edge, Firefox versions 115 or laterChrome⁂, Edge, Firefox versions 115 or laterChrome⁂, Edge, Firefox versions 115 or later*Chrome⁂, Edge, Firefox versions 115 or later
    O365 Support†Browser and client appsBrowser and client appsBrowser and client appsBrowser and client apps
    Identity
    User-ID‡ Decrypted and non-HTTP CORS trafficAll Supported TrafficAll Supported TrafficDepending on whether you're using SAML or Kerberos: decrypted/non-CORS X-Authenticated-User traffic
    Auth SupportedSAML (Any SAML 2.0 IDPs or through CIE)KerberosAll GlobalProtect Supported Auth SAML, Kerberos, X-Authenticated-User-based
    Skip AuthBy Domain and by Source IPBy Domain and by Source IPBy DomainBy Domain and by Source IP
    User Group DirectoryAll CIE-Supported DirectoriesAll CIE-Supported DirectoriesAll CIE-Supported DirectoriesAll CIE-Supported Directories
    License Mobile User Unit per userMobile User Unit per userMobile User Unit per userMobile User unit per user or headless device and NET units for bandwidth for remote networks
    Management
    Multitenant Panorama
    Supported on first tenant
    Supported on first tenant
    Supported on first tenant
    Supported on first tenant
    Multitenant Cloud Management SupportedSupportedSupportedSupported
    Security Services
    SaaS InlineSupportedSupportedSupportedSupported
    DLPSupportedSupportedSupportedSupported
    DNS Security§SupportedSupportedSupportedSupported
    Advanced URL FilteringSupportedSupportedSupportedSupported
    Advanced WildFireSupportedSupportedSupportedSupported
    Advanced Threat PreventionSupportedSupportedSupportedSupported
    Remote Browser IsolationSupportedSupportedSupportedSupported
    Private IP Visibility and EnforcementNot SupportedNot SupportedSupported for known sites or branchesSupported
    Egress NATSupportedSupportedSupportedSupported
    Private App AccessNot SupportedNot SupportedSupported via Service ConnectionsNot Supported
    All TCP TrafficNot SupportedNot SupportedSupported (with GlobalProtect version 6.3.1)Not Supported
    ⁂ For the Chrome browser, follow the instructions listed below to disable TLS 1.3 Kyber, if decryption is enabled:
    1. Open the Chrome browser.
    2. Add chrome://flags/#enable-tls13-kyber in the address bar and disable it.
    3. Click Relaunch.
    * For Proxy Mode on Agent, Firefox requires a manual policy rule pushed through Mobile Device Management that instructs it to honor the system proxy
    † Explicit Proxy supports only HTTP traffic, not UDP. With SAML, Explicit Proxy does not provide User-ID for client apps flows. For Agent proxy, you need to use a PAC file to send client app authentication flows to the cloud proxy.
    ‡ No User-ID is available for auth bypass.
    § You can't apply DNS Security profiles to Explicit Proxy flows. Block domains instead.
    App Support Considerations
    1. Explicit Proxy does not support apps that need IP affinity. The app must support traffic coming from multiple IPs for a given user session.
    2. Explicit Proxy downgrades decrypted HTTP/2 Flows to HTTP/1.
    3. Explicit Proxy does not fetch on-premises external dynamic lists.
    4. Agentless SAML only:
      1. Configure an SSL decryption policy to allow auth bypass by domain for agentless PAC-based Explicit Proxy with SAML Auth
        Decryption is required for Prisma Access to read the authentication state cookie set up by Prisma Access on the mobile user's browser. Failing to enforce decryption enables the abuse of Explicit Proxy as an open proxy that can attackers can use as a forwarding service for denial-of-service attacks.
      2. In traffic logs, Explicit Proxy will show undecrypted and HTTP-CORS mobile user traffic logs as SWG-authenticated users.
      3. Make a note of the following browser requirements and usage guidelines:
        • If you use Explicit Proxy, don't disable cookies in your browser; if you do, you can't browse any webpages.
        • If you're using Explicit Proxy with Microsoft Edge, be sure to set SettingsPrivacy, Search, and ServicesTracking prevention to Basic.
    Connectivity Requirements
    If mobile users are connecting from remote sites or headquarters or data center locations using an Explicit Proxy, the mobile user endpoint must be able to reach and route to the IdP, ACS FQDN, Explicit Proxy URL, and URL of the PAC file hosted by Prisma Access.
    PAC File Requirements and Guidelines—Follow the PAC File Guidelines when you set up the PAC file to use with Explicit Proxy.
    Proxy Chaining Guidelines—If you use proxy chaining from a third-party proxy to Explicit Proxy, specify the Explicit Proxy URL in the third-party proxy to forward traffic to Explicit Proxy
    On-Premises Support—Explicit Proxy is a cloud-based proxy solution and not an on-premises product. For an on-premises proxy solution, configure a PAN-OS web proxy.

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