Firewall Security Requirements Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-NET-000392
<GroupDescription></GroupDescription>Group -
The firewall must generate an alert that can be forwarded to, at a minimum, the ISSO and ISSM when denial-of-service (DoS) incidents are detected.
<VulnDiscussion>Without an alert, security personnel may be unaware of major detection incidents that require immediate action, and this dela...Rule Low Severity -
SRG-NET-000399
<GroupDescription></GroupDescription>Group -
The firewall must be configured to allow authorized users to record a packet capture based IP, traffic type (TCP, UDP, or ICMP), or protocol.
<VulnDiscussion>Without the ability to capture, record, and log content related to a user session, investigations into suspicious user activi...Rule Medium Severity -
SRG-NET-000492
<GroupDescription></GroupDescription>Group -
The firewall must generate traffic log records when traffic is denied, restricted, or discarded.
<VulnDiscussion>Without generating log records that log usage of objects by subjects and other objects, it would be difficult to establish, c...Rule Medium Severity -
SRG-NET-000493
<GroupDescription></GroupDescription>Group -
The firewall must generate traffic log records when attempts are made to send packets between security zones that are not authorized to communicate.
<VulnDiscussion>Without generating log records that are specific to the security and mission needs of the organization, it would be difficult...Rule Medium Severity -
SRG-NET-000364
<GroupDescription></GroupDescription>Group -
The firewall must be configured to inspect all inbound and outbound traffic at the application layer.
<VulnDiscussion>Application inspection enables the firewall to control traffic based on different parameters that exist within the packets su...Rule Medium Severity -
SRG-NET-000364
<GroupDescription></GroupDescription>Group -
The firewall must be configured to inspect all inbound and outbound IPv6 traffic for unknown or out-of-order extension headers.
<VulnDiscussion>IPv6 packets with unknown extension headers as well as out-of-order headers can create denial-of-service attacks for other ne...Rule Medium Severity -
SRG-NET-000364
<GroupDescription></GroupDescription>Group -
The 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).
<VulnDiscussion>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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