The Palo Alto Networks security platform must generate a log record when unauthorized network services are detected.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-228866	PANW-AG-000113	SV-228866r557387_rule		Medium

Description
Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or serve as malicious rogues for valid services. Examples of network services include service-oriented architectures (SOAs), cloud-based services (e.g., infrastructure as a service, platform as a service, or software as a service), cross-domain, Voice Over Internet Protocol, Instant Messaging, auto-execute, and file sharing.

Description

Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or serve as malicious rogues for valid services. Examples of network services include service-oriented architectures (SOAs), cloud-based services (e.g., infrastructure as a service, platform as a service, or software as a service), cross-domain, Voice Over Internet Protocol, Instant Messaging, auto-execute, and file sharing.

STIG	Date
Palo Alto Networks ALG Security Technical Implementation Guide	2021-07-02

Details

Check Text ( C-31101r513893_chk )
Obtain the list of network services that have not been authorized or approved by the ISSM and ISSO. For each prohibited network service, view the security policies that denies traffic associated with it and logs the denied traffic. To verify if a Security Policy logs denied traffic: Go to Policies >> Security Select the name of the security policy to view it. In the "Actions" tab, in the "Log Setting" section, if neither the "Log at Session Start" nor the "Log at Session End" check boxes are checked, this is a finding.

Check Text ( C-31101r513893_chk )

Obtain the list of network services that have not been authorized or approved by the ISSM and ISSO.
For each prohibited network service, view the security policies that denies traffic associated with it and logs the denied traffic.

To verify if a Security Policy logs denied traffic:
Go to Policies >> Security
Select the name of the security policy to view it.
In the "Actions" tab, in the "Log Setting" section, if neither the "Log at Session Start" nor the "Log at Session End" check boxes are checked, this is a finding.

Fix Text (F-31078r513894_fix)
To configure a Security Policy to log denied traffic: Go to Policies >> Security Select "Add" to create a new security policy, or select the name of the security policy to edit it. Configure the specific parameters of the policy by completing the required information in the fields of each tab. In the "Actions" tab, select the Log forwarding profile and select "Log at Session End". "Log at Session Start" may be selected under specific circumstances, but "Log at Session End" is preferred. Commit changes by selecting "Commit" in the upper-right corner of the screen. Select "OK" when the confirmation dialog appears.

Fix Text (F-31078r513894_fix)

To configure a Security Policy to log denied traffic:
Go to Policies >> Security
Select "Add" to create a new security policy, or select the name of the security policy to edit it.
Configure the specific parameters of the policy by completing the required information in the fields of each tab.
In the "Actions" tab, select the Log forwarding profile and select "Log at Session End".
"Log at Session Start" may be selected under specific circumstances, but "Log at Session End" is preferred.
Commit changes by selecting "Commit" in the upper-right corner of the screen.
Select "OK" when the confirmation dialog appears.