FCSS_SASE_AD-23 FCSS FortiSASE 23 Administrator Question and Answers

For a customer looking to upgrade their legacy on-premises proxy to a cloud-based proxy for a hybrid network, the combination of Secure Web Gateway (SWG) and Inline Cloud Access Security Broker (CASB) features in FortiSASE will provide the necessary capabilities.

Secure Web Gateway (SWG):

SWG provides comprehensive web security by inspecting and filtering web traffic to protect against web-based threats.

It ensures that all web traffic, whether originating from on-premises or remote locations, is inspected and secured by the cloud-based proxy.

Inline Cloud Access Security Broker (CASB):

CASB enhances security by providing visibility and control over cloud applications and services.

Inline CASB integrates with SWG to enforce security policies for cloud application usage, preventing unauthorized access and data leakage.

References:

FortiOS 7.2 Administration Guide: Details on SWG and CASB features.

FortiSASE 23.2 Documentation: Explains how SWG and inline-CASB are used in cloud-based proxy solutions.

The unusually high number of unknown applications by category in the daily report for application usage can be attributed to the following reasons:

Certificate Inspection is not being used to scan application traffic:

Without certificate inspection, encrypted traffic cannot be adequately analyzed, leading to a higher number of unknown applications.

Certificate inspection allows the FortiSASE to decrypt and inspect HTTPS traffic, identifying applications correctly.

Deep Inspection is not being used to scan traffic:

Deep inspection goes beyond basic traffic analysis, performing thorough examination of packet contents to identify applications accurately.

If deep inspection is not enabled, many applications may go unrecognized and categorized as unknown.

References:

FortiOS 7.2 Administration Guide: Details on certificate inspection and deep inspection configurations.

FortiSASE 23.2 Documentation: Explains the importance of deep inspection and certificate inspection in accurate application identification.

The Secure Internet Access (SIA) use case that minimizes individual workstation or device setup is SIA for agentless remote users. This use case does not require installing FortiClient on endpoints or configuring explicit web proxy settings on web browser-based endpoints, making it the simplest and most efficient deployment.

SIA for Agentless Remote Users:

Agentless deployment allows remote users to connect to the SIA service without needing to install any client software or configure browser settings.

This approach reduces the setup and maintenance overhead for both users and administrators.

Minimized Setup:

Without the need for FortiClient installation or explicit proxy configuration, the deployment is straightforward and quick.

Users can securely access the internet with minimal disruption and administrative effort.

References:

FortiOS 7.2 Administration Guide: Details on different SIA deployment use cases and configurations.

FortiSASE 23.2 Documentation: Explains how SIA for agentless remote users is implemented and the benefits it provides.

To resolve internal hostnames using internal DNS servers for remotely connected endpoints, the following two components must be configured on FortiSASE:

Split DNS Rules:

Split DNS allows the configuration of specific DNS queries to be directed to internal DNS servers instead of public DNS servers.

This ensures that internal hostnames are resolved using the organization's internal DNS infrastructure, maintaining privacy and accuracy for internal network resources.

Split Tunneling Destinations:

Split tunneling allows specific traffic (such as DNS queries for internal domains) to be routed through the VPN tunnel while other traffic is sent directly to the internet.

By configuring split tunneling destinations, you can ensure that DNS queries for internal hostnames are directed through the VPN to the internal DNS servers.

References:

FortiOS 7.2 Administration Guide: Provides details on configuring split DNS and split tunneling for VPN clients.

FortiSASE 23.2 Documentation: Explains the implementation and configuration of split DNS and split tunneling for securely resolving internal hostnames.

Onboarding a Secure Web Gateway (SWG) endpoint involves several components to ensure secure and effective integration with FortiSASE. Two key components are the FortiSASE CA certificate and the proxy auto-configuration (PAC) file.

FortiSASE CA Certificate:

The FortiSASE CA certificate is essential for establishing trust between the endpoint and the FortiSASE infrastructure.

It ensures that the endpoint can securely communicate with FortiSASE services and inspect SSL/TLS traffic.

Proxy Auto-Configuration (PAC) File:

The PAC file is used to configure the endpoint to direct web traffic through the FortiSASE proxy.

It provides instructions on how to route traffic, ensuring that all web requests are properly inspected and filtered by FortiSASE.

References:

FortiOS 7.2 Administration Guide: Details on onboarding endpoints and configuring SWG.

FortiSASE 23.2 Documentation: Explains the components required for integrating endpoints with FortiSASE and the process for deploying the CA certificate and PAC file.

FortiSASE supports zero trust network access (ZTNA) principles by identifying attributes on the endpoint for security posture checks. ZTNA principles require continuous verification of user and device credentials, as well as their security posture, before granting access to network resources.

Security Posture Check:

FortiSASE can evaluate the security posture of endpoints by checking for compliance with security policies, such as antivirus status, patch levels, and configuration settings.

This ensures that only compliant and secure devices are granted access to the network.

Zero Trust Network Access (ZTNA):

ZTNA is based on the principle of "never trust, always verify," which requires continuous assessment of user and device trustworthiness.

FortiSASE plays a crucial role in implementing ZTNA by performing these security posture checks and enforcing access control policies.

References:

FortiOS 7.2 Administration Guide: Provides information on ZTNA and endpoint security posture checks.

FortiSASE 23.2 Documentation: Details on how FortiSASE implements ZTNA principles.