II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must disable TCP reverse IP source routing.
<VulnDiscussion>If enabled, reverse IP source routing would allow an attacker to more easily complete a three-way TCP handshake and spoof new...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must set maximum number of half-open TCP connections to 4096.
<VulnDiscussion>This setting controls how many half-open connections can exist for a TCP port. It is necessary to control the number of comp...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must set maximum number of incoming connections to 1024.
<VulnDiscussion>This setting controls the maximum number of incoming connections that can be accepted on a TCP port limiting exposure to deni...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must disable network routing unless required.
<VulnDiscussion>The network routing daemon, in.routed, manages network routing tables. If enabled, it periodically supplies copies of the sys...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must implement TCP Wrappers.
<VulnDiscussion>TCP Wrappers is a host-based access control system that allows administrators to control who has access to various network se...Rule Low Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The boundary protection system (firewall) must be configured to deny network traffic by default and must allow network traffic by exception (i.e., deny all, permit by exception).
<VulnDiscussion>A firewall that relies on a deny all, permit by exception strategy requires all traffic to have explicit permission before tr...Rule Medium Severity -
SRG-OS-000480
<GroupDescription></GroupDescription>Group -
The system must prevent local applications from generating source-routed packets.
<VulnDiscussion>Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than c...Rule Low Severity -
SRG-OS-000023
<GroupDescription></GroupDescription>Group -
The operating system must display the DoD approved system use notification message or banner before granting access to the system for general system logons.
<VulnDiscussion>Warning messages inform users who are attempting to log in to the system of their legal status regarding the system and must ...Rule Low Severity -
SRG-OS-000023
<GroupDescription></GroupDescription>Group -
The operating system must display the DoD approved system use notification message or banner for SSH connections.
<VulnDiscussion>Warning messages inform users who are attempting to log in to the system of their legal status regarding the system and must ...Rule Low Severity -
SRG-OS-000023
<GroupDescription></GroupDescription>Group -
The GNOME service must display the DoD approved system use notification message or banner before granting access to the system.
<VulnDiscussion>Warning messages inform users who are attempting to log in to the system of their legal status regarding the system and must ...Rule Low Severity
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