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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000061-FW-000001

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;Remote access devices (such as those providing remote access to network devices and information systems) that lack automated ...
    Rule Medium Severity
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  • SRG-NET-000074-FW-000009

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must generate traffic log entries containing information to establish what type of events occurred.

    &lt;VulnDiscussion&gt;Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events l...
    Rule Medium Severity
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  • SRG-NET-000075-FW-000010

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must generate traffic log entries containing information to establish when (date and time) the events occurred.

    &lt;VulnDiscussion&gt;Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to...
    Rule Medium Severity
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  • SRG-NET-000076-FW-000011

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must generate traffic log entries containing information to establish the network location where the events occurred.

    &lt;VulnDiscussion&gt;Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up t...
    Rule Medium Severity
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  • SRG-NET-000077-FW-000012

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...
    Rule Low Severity
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  • SRG-NET-000078-FW-000013

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attac...
    Rule Medium Severity
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  • SRG-NET-000089-FW-000019

    <GroupDescription></GroupDescription>
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  • In the event that communication with the central audit server is lost, the FortiGate firewall must continue to queue traffic log records locally.

    &lt;VulnDiscussion&gt;It is critical that when the network element is at risk of failing to process traffic logs as required, it takes action to mi...
    Rule Medium Severity
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  • SRG-NET-000098-FW-000021

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must protect traffic log records from unauthorized access while in transit to the central audit server.

    &lt;VulnDiscussion&gt;Auditing and logging are key components of any security architecture. Logging the actions of specific events provides a means...
    Rule Medium Severity
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  • SRG-NET-000099-FW-000161

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must protect the traffic log from unauthorized modification of local log records.

    &lt;VulnDiscussion&gt;If audit data were to become compromised, forensic analysis and discovery of the true source of potentially malicious system ...
    Rule Medium Severity
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  • SRG-NET-000100-FW-000023

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must protect the traffic log from unauthorized deletion of local log files and log records.

    &lt;VulnDiscussion&gt;If audit data were to become compromised, forensic analysis and discovery of the true source of potentially malicious system ...
    Rule High Severity
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  • SRG-NET-000131-FW-000025

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must disable or remove unnecessary network services and functions that are not used as part of its role in the architecture.

    &lt;VulnDiscussion&gt;Network devices are capable of providing a wide variety of functions (capabilities or processes) and services. Some of these ...
    Rule Medium Severity
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  • SRG-NET-000192-FW-000029

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;DoS attacks can take multiple forms but have the common objective of overloading or blocking a network or host to deny or ser...
    Rule Medium Severity
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  • SRG-NET-000193-FW-000030

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall implementation must manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.

    &lt;VulnDiscussion&gt;A firewall experiencing a DoS attack will not be able to handle production traffic load. The high utilization and CPU caused ...
    Rule Medium Severity
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  • SRG-NET-000205-FW-000040

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;The enclave's internal network contains the servers where mission-critical data and applications reside. Malicious traffic ca...
    Rule Medium Severity
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  • SRG-NET-000235-FW-000133

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must fail to a secure state if the firewall filtering functions fail unexpectedly.

    &lt;VulnDiscussion&gt;Firewalls that fail suddenly and with no incorporated failure state planning may leave the hosting system available but with ...
    Rule Medium Severity
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  • SRG-NET-000333-FW-000014

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must send traffic log entries to a central audit server for management and configuration of the traffic log entries.

    &lt;VulnDiscussion&gt;Without the ability to centrally manage the content captured in the traffic log entries, identification, troubleshooting, and...
    Rule Medium Severity
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  • SRG-NET-000335-FW-000017

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;Without a real-time alert (less than a second), security personnel may be unaware of an impending failure of the audit functi...
    Rule Medium Severity
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  • SRG-NET-000362-FW-000028

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;Not configuring a key boundary security protection device such as the firewall against commonly known attacks is an immediate...
    Rule High Severity
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  • SRG-NET-000364-FW-000031

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must apply ingress filters to traffic that is inbound to the network through any active external interface.

    &lt;VulnDiscussion&gt;Unrestricted traffic to the trusted networks may contain malicious traffic that poses a threat to an enclave or to other conn...
    Rule Medium Severity
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  • SRG-NET-000364-FW-000032

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must apply egress filters to traffic outbound from the network through any internal interface.

    &lt;VulnDiscussion&gt;If outbound communications traffic is not filtered, hostile activity intended to harm other networks or packets from networks...
    Rule Medium Severity
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  • SRG-NET-000364-FW-000035

    <GroupDescription></GroupDescription>
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  • When employed as a premise firewall, FortiGate must block all outbound management traffic.

    &lt;VulnDiscussion&gt;The management network must still have its own subnet in order to enforce control and access boundaries provided by layer 3 n...
    Rule Medium Severity
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  • SRG-NET-000364-FW-000036

    <GroupDescription></GroupDescription>
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  • The FortiGate firewall must restrict traffic entering the VPN tunnels to the management network to only the authorized management packets based on destination address.

    &lt;VulnDiscussion&gt;Protect the management network with a filtering firewall configured to block unauthorized traffic. This requirement is simila...
    Rule Medium Severity
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  • SRG-NET-000364-FW-000040

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  • The FortiGate firewall must be configured to inspect all inbound and outbound traffic at the application layer.

    &lt;VulnDiscussion&gt;Application inspection enables the firewall to control traffic based on different parameters that exist within the packets su...
    Rule Medium Severity
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  • SRG-NET-000364-FW-000042

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  • 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).

    &lt;VulnDiscussion&gt;A compromised host in an enclave can be used by a malicious platform to launch cyberattacks on third parties. This is a commo...
    Rule Medium Severity
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  • SRG-NET-000392-FW-000042

    <GroupDescription></GroupDescription>
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  • 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.

    &lt;VulnDiscussion&gt;Without an alert, security personnel may be unaware of major detection incidents that require immediate action, and this dela...
    Rule Low Severity
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