Cloud Management

(
VM Series only
) If you have not already done so, activate the license for web proxy.
You must activate the web proxy license for the PA-1400 Series, PA-3400 Series, and VM-Series. Learn how to activate your subscription licenses for the PA-1400 Series and PA-3400 Series or activate the web proxy license for the VM-Series in the following step.
Log in to the Customer Service Portal (CSP).
Edit
the deployment profile.
Select
Web Proxy (Promotional Offer)
.

Click
Update Deployment Profile
.
On the firewall, retrieve the license keys from the server.
If the license key retrieval is not successful, restart the firewall and repeat this step before proceeding.
Set up the necessary interfaces and zones.
As a best practice, use Layer 3 (L3) for the three interfaces the web proxy uses and configure a separate zone for each interface within the same virtual routers and the same virtual systems.
Configure an interface for the client traffic.
Be sure to carefully copy the IP address for this interface and save it in a secure location because you must enter it as the
Proxy IP
address when you configure the web proxy.
Configure an interface for the outgoing traffic to the internet.
(
Optional
) Configure a loopback interface for the proxy.
Strata Cloud Manager
automatically creates a loopback interface. Only configure one if you would like to use a different loopback interface.
All incoming traffic is routed through this interface to the proxy.
To enable decryption for MITM detection, create a self-signed root CA certificate or import a certificate signed by your enterprise certificate authority (CA). For more information, refer to the best practices for administrative access.
Ensure you have completed the pre-deployment steps for the authentication method you want to configure.
If you are using SAML, you must have configured Explicit Proxy for Mobile Users.
If you are using Kerberos, you must have completed pre-deployment requirements for Kerberos.
If you have a DNS security subscription, integrate the web proxy firewall with Explicit Proxy to sinkhole any requests that match the DNS security categories that you specify.
In
Strata Cloud Manager
, select
Manage
Configuration
NGFW and Prisma Access
Device Settings
Proxy
Block Domains
Customize
.
(Optional)
Add
Block Domain Categories
,
Block Domain Lists
, or any domains that are
Exception Domains
because they are sinkholed due to matching one or more of the DNS Security categories.

(Optional)
Select whether you want to
Log blocked domain requests
.
Save
your selections.
Set up the Explicit Proxy.
In
Strata Cloud Manager
, select
Manage
Configuration
NGFW and Prisma Access
Device Settings
Configuration Scope
.
Select the folder or snippet for which you want to configure Explicit Proxy.
Select
Device Settings
Proxy
Proxy Settings
Customize
.
Select
Explicit Proxy
as the
Mode
.

Select the
Authentication Method
you want to use (either
Kerberos Single Sign On
or
SAML/CAS
).
Be sure to complete all necessary pre-deployment and configuration steps for the authentication method you select.
If you selected
Kerberos Single Sign On
, specify the
Authentication Profile
that you created when configuring Kerberos.

Specify the
Client Facing Interface
.
This is the interface for client traffic that you configured in an earlier step.
Specify an
Outbound Zone
for outgoing traffic to the internet.
You can
Create New
if you don't already have an outbound zone configured.
Specify the IP addresses for the primary and secondary DNS servers that you want to connect to.
Specify the interface for the DNS proxy connection.
(
Optional
) Specify the
Connect Timeout
to define (in seconds) how long the proxy waits for a response from the web server. If there is no response after the specified amount of time has elapsed, the proxy closes the connection. The default is 5 seconds.
(
Optional
) Specify the
Web Traffic Service Port
if you'd like web traffic to use special ports. The default ports are 80 and 443.
(
Optional
) Specify the loopback interface for the proxy that you configured in an earlier step.
(
Optional
) In case of legitimate business need, deselect
Reset if SNI does not match HTTP CONNECT
.
It's recommended to leave this enabled to prevent domain fronting attacks by specifying different domains between the CONNECT request and the Server Name Indication (SNI) field in the HTTP header.
Select
Save
to confirm the changes.
If it applies to your deployment, create a Source NAT policy rule.
Customize web access policies for any exceptions to the default policies you may need.
If this is your initial explicit web proxy configuration, make a change to your proxy auto-configuration (PAC) file.
Select
Manage
Configuration
NGFW and Prisma Access
Device Settings
Proxy
Proxy Auto Configuration

Follow the PAC file guidelines to make the necessary changes to the PAC file.

When you're finished making changes,
Save
the file.
The PAC file applies to all firewalls associated with your
Strata Cloud Manager
tenant. If you need different PAC files for different firewalls, you'll have to manually upload a different PAC file to those firewalls.