The Palo Alto Networks security platform must generate an alert to the ISSO and ISSM, at a minimum, when unauthorized network services are detected.

From Palo Alto Networks IDPS Security Technical Implementation Guide

Part of SRG-NET-000385-IDPS-00211

Associated with: CCI-002684

SV-77177r1_rule The Palo Alto Networks security platform must generate an alert to the ISSO and ISSM, at a minimum, when unauthorized network services are detected.

Vulnerability discussion

Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or serve as malicious rogues for valid services.Automated mechanisms can be used to send automatic alerts or notifications. Such automatic alerts or notifications can be conveyed in a variety of ways (e.g., telephonically, via electronic mail, via text message, or via websites).The IDPS must either send the alert to a management console that is actively monitored by authorized personnel or use a messaging capability to send the alert directly to designated personnel.

Check content

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. Ask the Administrator how the ISSO and ISSM are receiving alerts (E-mail, SNMP Trap, or Syslog). View the configured Server Profile; if there is no Server Profile for the method explained, this is a finding. View the Log Forwarding Profiles; this is under Objects >> Log Forwarding. Determine which Server Profile is associated with each Log Forwarding Profile. View the Security Policies that are used to block unauthorized network services. Go to Policies >> Security Select the name of the security policy to view it. In the "Actions" tab, in the "Log Setting" section, view the Log Forwarding Profile. If there is no Log Forwarding Profile, this is a finding.

Fix text

Obtain the list of network services that have not been authorized or approved by the ISSM and ISSO. For each prohibited network service, configure a security policy that generates an alert to, at a minimum, the ISSO and ISSM when unauthorized network services are detected. Configure a Server Profile for use with Log Forwarding Profile(s); if email is used, the ISSO and ISSM must be recipients. To create an email server profile: Go to Device >> Server Profiles >> Email Select "Add". In the Email Server Profile, enter the name of the profile. Select "Add". In the "Servers" tab, enter the required information: In the "Name" field, enter the name of the Email server In the "Email Display Name" field, enter the name shown in the "From" field of the email. In the "From" field, enter the From email address. In the "To" field, enter the email address of the recipient. In the "Additional Recipient" field, enter the email address of another recipient. You can only add one additional recipient. To add multiple recipients, add the email address of a distribution list. In the "Gateway" field, enter the IP address or host name of the Simple Mail Transport Protocol (SMTP) server used to send the email. Select "OK". Configure a Log Forwarding Profile; this is under Objects >> Log Forwarding 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.

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