III - Administrative Public
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000061-FW-000001
Group -
The FortiGate firewall must use organization-defined filtering rules that apply to the monitoring of remote access traffic for the traffic from the VPN access points.
Remote access devices (such as those providing remote access to network devices and information systems) that lack automated capabilities increase risk and make remote user access management diffic...Rule Medium Severity -
SRG-NET-000074-FW-000009
Group -
The FortiGate firewall must generate traffic log entries containing information to establish what type of events occurred.
Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack. Audit event content that may be neces...Rule Medium Severity -
SRG-NET-000075-FW-000010
Group -
The FortiGate firewall must generate traffic log entries containing information to establish when (date and time) the events occurred.
Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. To compile an accurate risk assessment and provid...Rule Medium Severity -
SRG-NET-000076-FW-000011
Group -
The FortiGate firewall must generate traffic log entries containing information to establish the network location where the events occurred.
Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. To compile an accurate risk assessment and provi...Rule Medium Severity -
SRG-NET-000077-FW-000012
Group -
The FortiGate firewall must generate traffic log entries containing information to establish the source of the events, such as the source IP address at a minimum.
Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. In order to compile an accurate risk assessment...Rule Low Severity -
SRG-NET-000078-FW-000013
Group -
The FortiGate firewall must generate traffic log entries containing information to establish the outcome of the events, such as, at a minimum, the success or failure of the application of the firewall rule.
Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attack was successful or if changes were made to the security state of the ne...Rule Medium Severity -
SRG-NET-000089-FW-000019
Group -
In the event that communication with the central audit server is lost, the FortiGate firewall must continue to queue traffic log records locally.
It is critical that when the network element is at risk of failing to process traffic logs as required, it takes action to mitigate the failure. Audit processing failures include software/hardware ...Rule Medium Severity -
SRG-NET-000098-FW-000021
Group -
The FortiGate firewall must protect traffic log records from unauthorized access while in transit to the central audit server.
Auditing and logging are key components of any security architecture. Logging the actions of specific events provides a means to investigate an attack, recognize resource utilization or capacity th...Rule Medium Severity -
SRG-NET-000099-FW-000161
Group -
The FortiGate firewall must protect the traffic log from unauthorized modification of local log records.
If audit data were to become compromised, forensic analysis and discovery of the true source of potentially malicious system activity would be impossible to achieve. To ensure the veracity of audi...Rule Medium Severity -
SRG-NET-000100-FW-000023
Group -
The FortiGate firewall must protect the traffic log from unauthorized deletion of local log files and log records.
If audit data were to become compromised, forensic analysis and discovery of the true source of potentially malicious system activity would be impossible to achieve. To ensure the veracity of audi...Rule High Severity -
SRG-NET-000131-FW-000025
Group -
The FortiGate firewall must disable or remove unnecessary network services and functions that are not used as part of its role in the architecture.
Network devices are capable of providing a wide variety of functions (capabilities or processes) and services. Some of these functions and services are installed and enabled by default. The organiz...Rule Medium Severity -
SRG-NET-000192-FW-000029
Group -
The FortiGate firewall must block outbound traffic containing denial-of-service (DoS) attacks to protect against the use of internal information systems to launch any DoS attacks against other networks or endpoints.
DoS attacks can take multiple forms but have the common objective of overloading or blocking a network or host to deny or seriously degrade performance. If the network does not provide safeguards a...Rule Medium Severity -
SRG-NET-000193-FW-000030
Group -
The FortiGate firewall implementation must manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.
A firewall experiencing a DoS attack will not be able to handle production traffic load. The high utilization and CPU caused by a DoS attack will also have an effect on control keep-alives and time...Rule Medium Severity -
SRG-NET-000205-FW-000040
Group -
The FortiGate firewall must filter traffic destined to the internal enclave in accordance with the specific traffic that is approved and registered in the Ports, Protocols, and Services Management (PPSM) Category Assurance List (CAL), Vulnerability Assessments (VAs) for that the enclave.
The enclave's internal network contains the servers where mission-critical data and applications reside. Malicious traffic can enter from an external boundary or originate from a compromised host i...Rule Medium Severity -
SRG-NET-000235-FW-000133
Group -
The FortiGate firewall must fail to a secure state if the firewall filtering functions fail unexpectedly.
Firewalls that fail suddenly and with no incorporated failure state planning may leave the hosting system available but with a reduced security protection. Failure to a known safe state helps preve...Rule Medium Severity -
SRG-NET-000333-FW-000014
Group -
The FortiGate firewall must send traffic log entries to a central audit server for management and configuration of the traffic log entries.
Without the ability to centrally manage the content captured in the traffic log entries, identification, troubleshooting, and correlation of suspicious behavior would be difficult and could lead to...Rule Medium Severity -
SRG-NET-000335-FW-000017
Group -
If communication with the central audit server is lost, the FortiGate firewall must generate a real-time alert to, at a minimum, the SCA and ISSO.
Without a real-time alert (less than a second), security personnel may be unaware of an impending failure of the audit functions and system operation may be adversely impacted. Alerts provide organ...Rule Medium Severity -
SRG-NET-000362-FW-000028
Group -
The FortiGate firewall must employ filters that prevent or limit the effects of all types of commonly known denial-of-service (DoS) attacks, including flooding, packet sweeps, and unauthorized port scanning.
Not configuring a key boundary security protection device such as the firewall against commonly known attacks is an immediate threat to the protected enclave because they are easily implemented by ...Rule High Severity -
SRG-NET-000364-FW-000031
Group -
The FortiGate firewall must apply ingress filters to traffic that is inbound to the network through any active external interface.
Unrestricted traffic to the trusted networks may contain malicious traffic that poses a threat to an enclave or to other connected networks. Additionally, unrestricted traffic may transit a network...Rule Medium Severity -
SRG-NET-000364-FW-000032
Group -
The FortiGate firewall must apply egress filters to traffic outbound from the network through any internal interface.
If outbound communications traffic is not filtered, hostile activity intended to harm other networks or packets from networks destined to unauthorized networks may not be detected and prevented. A...Rule Medium Severity -
SRG-NET-000364-FW-000035
Group -
When employed as a premise firewall, FortiGate must block all outbound management traffic.
The management network must still have its own subnet in order to enforce control and access boundaries provided by layer 3 network nodes such as routers and firewalls. Management traffic between t...Rule Medium Severity -
SRG-NET-000364-FW-000036
Group -
The FortiGate firewall must restrict traffic entering the VPN tunnels to the management network to only the authorized management packets based on destination address.
Protect the management network with a filtering firewall configured to block unauthorized traffic. This requirement is similar to the out-of-band management (OOBM) model, in which the production ne...Rule Medium Severity -
SRG-NET-000364-FW-000040
Group -
The FortiGate firewall must be configured to inspect all inbound and outbound traffic at the application layer.
Application inspection enables the firewall to control traffic based on different parameters that exist within the packets such as enforcing application-specific message and field length. Inspectio...Rule Medium Severity -
SRG-NET-000364-FW-000042
Group -
The FortiGate firewall must be configured to restrict it from accepting outbound packets that contain an illegitimate address in the source address field via an egress filter or by enabling Unicast Reverse Path Forwarding (uRPF).
A compromised host in an enclave can be used by a malicious platform to launch cyberattacks on third parties. This is a common practice in "botnets", which are a collection of compromised computers...Rule Medium Severity -
SRG-NET-000392-FW-000042
Group -
The FortiGate firewall must generate an alert that can be forwarded to, at a minimum, the Information System Security Officer (ISSO) and Information System Security Manager (ISSM) when denial-of-service (DoS) incidents are detected.
Without an alert, security personnel may be unaware of major detection incidents that require immediate action, and this delay may result in the loss or compromise of information. The firewall gen...Rule Low Severity
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