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II - Mission Support Public

Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000089

    <GroupDescription></GroupDescription>
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  • The ALG must shut down by default upon audit failure (unless availability is an overriding concern).

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

    <GroupDescription></GroupDescription>
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  • The ALG must protect audit information from unauthorized read access.

    &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

    <GroupDescription></GroupDescription>
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  • The ALG must protect audit information from unauthorized modification.

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

    <GroupDescription></GroupDescription>
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  • The ALG must protect audit information from unauthorized deletion.

    &lt;VulnDiscussion&gt;If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious sy...
    Rule Medium Severity
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  • SRG-NET-000101

    <GroupDescription></GroupDescription>
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  • The ALG must protect audit tools from unauthorized access.

    &lt;VulnDiscussion&gt;Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, pro...
    Rule Medium Severity
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  • SRG-NET-000102

    <GroupDescription></GroupDescription>
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  • The ALG must protect audit tools from unauthorized modification.

    &lt;VulnDiscussion&gt;Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, pro...
    Rule Medium Severity
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  • SRG-NET-000103

    <GroupDescription></GroupDescription>
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  • The ALG must protect audit tools from unauthorized deletion.

    &lt;VulnDiscussion&gt;Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, pro...
    Rule Medium Severity
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  • SRG-NET-000131

    <GroupDescription></GroupDescription>
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  • The ALG must not have unnecessary services and functions enabled.

    &lt;VulnDiscussion&gt;Information systems are capable of providing a wide variety of functions (capabilities or processes) and services. Some of th...
    Rule Medium Severity
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  • SRG-NET-000131

    <GroupDescription></GroupDescription>
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  • The ALG must be configured to remove or disable unrelated or unneeded application proxy services.

    &lt;VulnDiscussion&gt;Unrelated or unneeded proxy services increase the attack vector and add excessive complexity to the securing of the ALG. Mult...
    Rule Medium Severity
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  • SRG-NET-000132

    <GroupDescription></GroupDescription>
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  • The ALG must be configured to prohibit or restrict the use of functions, ports, protocols, and/or services, as defined in the PPSM CAL and vulnerability assessments.

    &lt;VulnDiscussion&gt;In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e....
    Rule Medium Severity
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  • SRG-NET-000138

    <GroupDescription></GroupDescription>
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  • The ALG providing user authentication intermediary services must uniquely identify and authenticate organizational users (or processes acting on behalf of organizational users).

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...
    Rule Medium Severity
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  • SRG-NET-000138

    <GroupDescription></GroupDescription>
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  • The ALG providing user access control intermediary services must be configured with a pre-established trust relationship and mechanisms with appropriate authorities (e.g., Active Directory or AAA server) which validate user account access authorizations and privileges.

    &lt;VulnDiscussion&gt;User account and privilege validation must be centralized in order to prevent unauthorized access using changed or revoked pr...
    Rule Medium Severity
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  • SRG-NET-000138

    <GroupDescription></GroupDescription>
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  • The ALG providing user authentication intermediary services must restrict user authentication traffic to specific authentication server(s).

    &lt;VulnDiscussion&gt;User authentication can be used as part of the policy filtering rule sets. Some URLs or network resources can be restricted t...
    Rule Medium Severity
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  • SRG-NET-000140

    <GroupDescription></GroupDescription>
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  • The ALG providing user authentication intermediary services must use multifactor authentication for network access to non-privileged accounts.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, non-privileged users must utilize multifactor authentication to ...
    Rule Medium Severity
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  • SRG-NET-000147

    <GroupDescription></GroupDescription>
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  • The ALG providing user authentication intermediary services must implement replay-resistant authentication mechanisms for network access to nonprivileged accounts.

    &lt;VulnDiscussion&gt;A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authen...
    Rule Medium Severity
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  • SRG-NET-000164

    <GroupDescription></GroupDescription>
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  • The ALG that provides intermediary services for TLS must validate certificates used for TLS functions by performing RFC 5280-compliant certification path validation.

    &lt;VulnDiscussion&gt;A certificate's certification path is the path from the end entity certificate to a trusted root certification authority (CA)...
    Rule Medium Severity
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  • SRG-NET-000166

    <GroupDescription></GroupDescription>
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  • The ALG providing PKI-based user authentication intermediary services must map authenticated identities to the user account.

    &lt;VulnDiscussion&gt;Authorization for access to any network element requires an approved and assigned individual account identifier. To ensure on...
    Rule Medium Severity
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  • SRG-NET-000169

    <GroupDescription></GroupDescription>
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  • The ALG providing user authentication intermediary services must uniquely identify and authenticate non-organizational users (or processes acting on behalf of non-organizational users).

    &lt;VulnDiscussion&gt;Lack of authentication enables anyone to gain access to the network or possibly a network element that provides opportunity f...
    Rule Medium Severity
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  • SRG-NET-000192

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  • The ALG providing content filtering must block outbound traffic containing known and unknown DoS attacks to protect against the use of internal information systems to launch any Denial of Service (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-000202

    <GroupDescription></GroupDescription>
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  • The ALG must deny network communications traffic by default and allow network communications traffic by exception (i.e., deny all, permit by exception).

    &lt;VulnDiscussion&gt;A deny-all, permit-by-exception network communications traffic policy ensures that only those connections which are essential...
    Rule Medium Severity
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  • SRG-NET-000213

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  • The ALG must terminate all network connections associated with a communications session at the end of the session, or as follows: for in-band management sessions (privileged sessions), the session must be terminated after 10 minutes of inactivity; and for user sessions (non-privileged session), the session must be terminated after 15 minutes of inactivity.

    &lt;VulnDiscussion&gt;Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...
    Rule Medium Severity
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  • SRG-NET-000228

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  • The ALG must detect, at a minimum, mobile code that is unsigned or exhibiting unusual behavior, has not undergone a risk assessment, or is prohibited for use based on a risk assessment.

    &lt;VulnDiscussion&gt;Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded an...
    Rule Medium Severity
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  • SRG-NET-000230

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  • The ALG must protect the authenticity of communications sessions.

    &lt;VulnDiscussion&gt;Authenticity protection provides protection against man-in-the-middle attacks/session hijacking and the insertion of false in...
    Rule Medium Severity
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  • SRG-NET-000231

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  • The ALG must invalidate session identifiers upon user logout or other session termination.

    &lt;VulnDiscussion&gt;Captured sessions can be reused in "replay" attacks. This requirement limits the ability of adversaries from capturing and co...
    Rule Medium Severity
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  • SRG-NET-000233

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  • The ALG must recognize only system-generated session identifiers.

    &lt;VulnDiscussion&gt;Network elements (depending on function) utilize sessions and session identifiers to control application behavior and user ac...
    Rule Medium Severity
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Node 2

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