III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000015-AS-000010
Group -
The Horizon Connection Server must be configured to only support TLS 1.2 connections.
Preventing the disclosure of transmitted information requires that the application server take measures to employ strong cryptographic mechanisms to protect the information during transmission. Thi...Rule High Severity -
SRG-APP-000015-AS-000010
Group -
The Blast Secure Gateway must be configured to only support TLS 1.2 connections.
Preventing the disclosure of transmitted information requires that the application server take measures to employ strong cryptographic mechanisms to protect the information during transmission. Thi...Rule High Severity -
SRG-APP-000015-AS-000010
Group -
The Horizon Connection Server must force server cipher preference.
By default, during the initial setup of a Transport Layer Security (TLS) connection to the Horizon Connection Server, the client sends a list of supported cipher suites in order of preference. The ...Rule High Severity -
SRG-APP-000016-AS-000013
Group -
The Horizon Connection Server must be configured to debug level logging.
To ensure that all security-relevant information and events are logged, the Horizon Connection Server must be configured with the "debug" logging level. This is the default value but since it could...Rule Medium Severity -
SRG-APP-000033-AS-000024
Group -
The Horizon Connection Server administrators must be limited in terms of quantity, scope, and permissions.
Role based access and least privilege are two fundamental security concepts that must be properly implemented in Horizon View to ensure the right user and groups have the right permissions on the r...Rule Medium Severity -
SRG-APP-000080-AS-000045
Group -
The Horizon Connection Server must require DoD PKI for administrative logins.
The Horizon Connection Server console supports CAC login as required for cryptographic non-repudiation. CAC login can be configured as disabled, optional or required but for maximum assurance it mu...Rule High Severity -
SRG-APP-000089-AS-000050
Group -
The Horizon Connection Server must be configured with an events database.
The Horizon Connection Server stores application level events and actions in a dedicated database versus log files. This makes day-to-day administration easier while offloading these events to a se...Rule Medium Severity -
SRG-APP-000090-AS-000051
Group -
The Horizon Connection Server must limit access to the global configuration privilege.
The Horizon Connection Server comes with pre-defined privileges that can be combined in any combination into a role. That role is then assigned to a user or group. Any role that has the "Manage Glo...Rule Medium Severity -
SRG-APP-000175-AS-000124
Group -
The Horizon Connection Server must perform full path validation on server-to-server TLS connection certificates.
The Horizon Connection Server performs certificate revocation checking on its own certificate and on those of the security servers paired to it. Each instance also checks the certificates of vCente...Rule Medium Severity -
SRG-APP-000175-AS-000124
Group -
The Horizon Connection Server must validate client and administrator certificates.
The Horizon Connection Server can be configured to check the revocation status of PKI certificates over both OCSP and CRL. This capability is disabled by default and must be enabled post-deployment...Rule Medium Severity -
SRG-APP-000179-AS-000129
Group -
The Horizon Connection Server must only use FIPS 140-2 validated cryptographic modules.
Encryption is only as good as the encryption modules utilized. Unapproved cryptographic module algorithms cannot be verified and cannot be relied upon to provide confidentiality or integrity, and D...Rule High Severity -
SRG-APP-000220-AS-000148
Group -
The Horizon Connection Server must time out administrative sessions after 15 minutes or less.
If communications sessions remain open for extended periods of time even when unused, there is the potential for an adversary to hijack the session and use it to gain access to the system. Horizon...Rule Medium Severity -
SRG-APP-000267-AS-000170
Group -
The Horizon Connection Server must protect log files from unauthorized access.
Error logs can contain sensitive information about system errors and system architecture that need to be protected from unauthorized access and modification. By default, Horizon Connection Server l...Rule Medium Severity -
SRG-APP-000358-AS-000064
Group -
The Horizon Connection Server must offload events to a central log server in real time.
Information system logging capability is critical for accurate forensic analysis. Centralized management of log records provides for efficiency in maintenance and management of records, as well as ...Rule Medium Severity -
SRG-APP-000427-AS-000264
Group -
The Horizon Connection Server must be configured with a DoD-issued TLS certificate.
The DoD will only accept PKI certificates obtained from a DoD-approved internal or external certificate authority (CA). If the CA used for verifying the certificate is not DoD-approved, trust of th...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must reauthenticate users after a network interruption.
Given the remote access nature of Horizon Connection Server, the client must be ensured to be under positive control as much as is possible from the server side. As such, whenever a network interru...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must disconnect users after a maximum of ten hours.
Horizon Connection Server is intended to provide remote desktops and applications, generally during working hours and for no more than an extended workday. Leaving sessions active for more than wha...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must disconnect applications after two hours of idle time.
Horizon View is intended to provide remote desktops and applications during for more or less continuous use. If an application is open and goes used for more than two hours, that application must b...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must discard SSO credentials after 15 minutes.
Horizon Connection Server caches user credentials temporarily to ensure that the user can connect to their desktop pools without reauthenticating, right after logging in to the broker. However, thi...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must not accept pass-through client credentials.
Horizon Connection Server has the ability to allow clients to authenticate using the local session credentials of their local endpoint. While convenient, this must be disabled for DoD deployments a...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must require DoD PKI for client logins.
Before clients can pick a desktop or app to access, they must first authenticate to the broker, the Connection Server itself. If the client is accessing the broker directly, then the allowed authen...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must backup its configuration daily.
Configuring the application to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baselin...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server Instant Clone domain account must be configured with limited permissions.
Configuring the application to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baselin...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must be configured in accordance with the security configuration settings based on DoD security configuration or implementation guidance, including STIGs, NSA configuration guides, CTOs, and DTMs.
Configuring the application to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baselin...Rule Medium Severity -
SRG-APP-000516-AS-000237
Group -
The Horizon Connection Server must have X-Frame-Options enabled.
RFC 7034 HTTP Header Field X-Frame-Options, also known as counter clickjacking, is enabled by default on the Horizon Connection Server. It can be disabled by adding the entry "x-frame-options=OFF" ...Rule Medium Severity
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