Forescout must configure TCP for the syslog protocol to allow for detection by the central event server if communications is lost.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-233329	FORE-NC-000230	SV-233329r615867_rule		Medium

Description
It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability and system operation may be adversely affected. Note that this configuration allows for the central log server to be configured with a critical alert to be sent to the System Security Officer (ISSO) and Systems Administrator (SA) (at a minimum) if it is unable to communicate the Forescout or stops receiving log updates. The alert requirement is in the Syslog STIG.

Description

It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability and system operation may be adversely affected. Note that this configuration allows for the central log server to be configured with a critical alert to be sent to the System Security Officer (ISSO) and Systems Administrator (SA) (at a minimum) if it is unable to communicate the Forescout or stops receiving log updates. The alert requirement is in the Syslog STIG.

STIG	Date
Forescout Network Access Control Security Technical Implementation Guide	2020-12-11

Details

Check Text ( C-36524r615866_chk )
1. Go to Tools >> Options >> Syslog. 2. Verify the Server Protocol is set to TCP. 3. Verify "Use TLS" setting is set. 4. Verify the "Identity, Facility, and Severity" setting is configured. If Forescout does not use TCP for the syslog protocol, this is a finding.

Fix Text (F-36489r605691_fix)
Configure Syslog server with TCP, as well as configure Syslog to alert if the communication between the Syslog server and the Forescout appliance loses connectivity. 1. Go to Tools >> Options >> Syslog. 2. Click Add/Edit. 3. Configure the Syslog: - Syslog Server IP address - Server Port - Server Protocol set to TCP - Check the Use TLS setting - Configure the Identity, Facility, and Severity. 4. Click "OK". 5. Click "Apply".

Fix Text (F-36489r605691_fix)

Configure Syslog server with TCP, as well as configure Syslog to alert if the communication between the Syslog server and the Forescout appliance loses connectivity.

1. Go to Tools >> Options >> Syslog.
2. Click Add/Edit.
3. Configure the Syslog:
- Syslog Server IP address
- Server Port
- Server Protocol set to TCP
- Check the Use TLS setting
- Configure the Identity, Facility, and Severity.
4. Click "OK".
5. Click "Apply".