Fortinet FortiGate Firewall Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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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 -
SRG-NET-000399-FW-000008
Group -
The FortiGate firewall must allow authorized users to record a packet-capture-based IP, traffic type (TCP, UDP, or ICMP), or protocol.
Without the ability to capture, record, and log content related to a user session, investigations into suspicious user activity would be hampered. This configuration ensures the ability to select ...Rule Medium Severity -
SRG-NET-000492-FW-000006
Group -
The FortiGate firewall must generate traffic log records when traffic is denied, restricted, or discarded.
Without generating log records that log usage of objects by subjects and other objects, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify...Rule Medium Severity -
SRG-NET-000493-FW-000007
Group -
The FortiGate firewall must generate traffic log records when attempts are made to send packets between security zones that are not authorized to communicate.
Without generating log records specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or i...Rule Medium Severity -
SRG-NET-000019-FW-000003
Group -
The FortiGate firewall must use filters that use packet headers and packet attributes, including source and destination IP addresses and ports.
Information flow control regulates where information is allowed to travel within a network and between interconnected networks. Blocking or restricting detected harmful or suspicious communications...Rule High Severity -
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 -
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 -
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 -
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 -
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 -
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 -
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 -
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
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