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Minimum Security Standards for Systems

Purpose

Scope

Audience

Minimum Standard

Security Review for New Security Software and Appliances

Non-Compliance and Exceptions

Related UTB/TSC Policies, Procedures, Best Practices and Applicable Laws 
 

Use the Minimum Security Standards for Systems Worksheet to document compliance with requirements for protecting Category-A data.

I. Purpose


These minimum standards serve as a supplement to the Information Resources Use and Security Policy, which was drafted in response to Texas Administrative Code 202 and UT System UTS-165. Adherence to the standards will increase the security of systems and help safeguard university information technology resources. These minimum standards exist in addition to all other university policies and federal and state regulations governing the protection of the university's data.

Compliance with these requirements does not imply a completely secure system. Instead, these requirements should be integrated into a comprehensive system security plan.

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II. Scope


These standards apply to all devices, physical or virtual, connected to the university networks through a physical, wireless, or VPN connection where data is classified as Category A, B, or C (see Data Classification Standard).

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III. Audience


All users with systems connected to the university network as in Sec. II, above.

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IV. Minimum Standards


This section lists the minimum standards that should be applied and enabled in Category A, B, and C data systems that are connected to the university network. Standards for Category A are generally required.

If products are not available from reputable commercial or reliable open source communities for a specific requirement, then the specific requirement is waived until an appropriate solution is available. In such cases a security exception report will be filed.

IT Owners and IT Custodians, lead researchers, and/or systems administrators are expected to use their professional judgment in managing risks to the information and systems they use and/or support. All security controls should be proportional to the confidentiality, integrity, and availability requirements of the data processed by the system. A current list of recommended software is maintained on the ITS BevoWare Web site.

Backups

# Practice Cat A Cat B & C 
1.1 System administrators should establish and follow a procedure to carry out regular system backups. Required Recommended
1.2 Backups must be verified at least monthly, either through automated verification, through customer restores, or through trial restores. Required Recommended
1.3 Systems administrators must maintain documented restoration procedures for systems and the data on those systems. Required Recommended

Change Management

# Practice Cat A Cat B & C 
2.1 There must be a change control process for systems configuration. This process must be documented. Required Recommended

2.2

System changes should be evaluated prior to being applied in a production environment.

  • Patches must be tested prior to installation in the production environment if a test environment is available. 
  • If a test environment is not available, the lack of patch testing should be communicated to the service subscriber or data customer, along with possible changes in the environment due to the patch.

Required

Recommended

Computer Virus Prevention

# Practice Cat A Cat B & C 
3.1 Anti-virus software must be installed and enabled. Required Required
3.2

Install and enable anti-spyware software. Installing and enabling anti-spyware software is required if the machine is used by administrators to browse Web sites not specifically related to the administration of the machine.

Recommended Recommended
3.3 Anti-virus and, if applicable, anti-spyware software should be configured to update signatures daily. Required Recommended
3.4 Systems administrators should maintain and keep available a description of the standard configuration of anti-virus software. Required Recommended

Physical Access

# Practice Cat A Cat B & C 
4.1 Systems must be physically secured in racks or areas with restricted access. Portable devices shall be physically secured if left unattended. Required Recommended
4.2 Backup media must be secured from unauthorized physical access. If the backup media is stored off-site, it must be encrypted or have a documented process to prevent unauthorized access. Required Recommended

System Hardening

# Practice Cat A Cat B & C 
5.1 Systems must be set up in a protected network environment or by using a method that assures the system is not accessible via a potentially hostile network until it is secured. Required Recommended
5.2 Operating system and application services security patches should be installed expediently and in a manner consistent with change management procedures. Required Required
5.3 If automatic notification of new patches is available, that option should be enabled. Required Required
5.4 Services, applications, and user accounts that are not being utilized should be disabled or uninstalled. Required Recommended
5.5 Methods should be enabled to limit connections to services running on the host to only the authorized users of the service. Software firewalls, hardware firewalls, and service configuration are a few of the methods that may be employed. Required Recommended
5.6 Services or applications running on systems manipulating Category A data should implement secure (that is, encrypted) communications as required by confidentiality and integrity needs. (See Data Encryption Guidelines.) Required Recommended
5.7 Systems will provide secure storage for Category A data as required by confidentiality, integrity, and availability needs. Security can be provided by means such as, but not limited to, encryption (see Data Encryption Guidelines), access controls, file system audits, physically securing the storage media, or any combination thereof as deemed appropriate. Required Recommended
5.8 If the operating system supports it, integrity checking of critical operating system files should be enabled and tested. Third-party tools may also be used to implement this. Required Recommended
5.9 Integrity checking of system accounts, group memberships, and their associated privileges should be enabled and tested. Required Recommended
5.10 The required university warning banner should be installed. Required Recommended
5.11 Whenever possible, all non-removable or (re-) writable media must be configured with file systems that support access control. Required Recommended
5.12 Access to non-public file system areas must require authentication. Required Recommended
5.13 Strong password requirements will be enabled, as technology permits, based on the category of data the account is allowed to access. Required Required
5.14 Apply the principle of least privilege to user, administrator, and system accounts. Required Recommended

Security Monitoring 

# Practice Cat A Cat B & C 
6.1 If the operating system comes with a means to log activity, enabling and testing of those controls is required. Required Recommended
6.2 Operating system and service log monitoring and analysis should be performed routinely. This process should be documented. Required Recommended
6.3 The systems administrator must follow a documented backup strategy for security logs (for example, account management, access control, data integrity, etc.). Security logs should retain at least 14 days of relevant log information (data retention requirements for specific data should be considered). Required Recommended
6.4 All administrator or root access must be logged. Required Recommended
 


V. Security Review for New Security Software and Appliances


Departments evaluating the implementation of new security software or appliances, involving Category A type data, should request a security review by sending a written description of the proposed implementation to the Office of Information Security prior to selecting vendors or products. Security reviews tend to be informal and can often be performed quickly, while ensuring that best practices are being considered.

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VI. Non-Compliance and Exceptions


For all system administrators—if any of the minimum standards contained within this document cannot be met on systems manipulating Category A or B data that you support, an Exception Process must be initiated that includes reporting the non-compliance to the Information Security Office, along with a plan for risk assessment and management. (See Security Exception Report.) Non-compliance with these standards may result in revocation of system or network access, notification of supervisors, and reporting to the Office of Internal Audit.

University of Texas at Brownsville employees are required to comply with both institutional rules and regulations and applicable UT System rules and regulations. In addition to university and System rules and regulations, University of Texas at Brownsville employees are required to comply with state laws and regulations.

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VII. Related UTB/TSC Policies, Procedures, Best Practices and Applicable Laws


The policies and practices listed here inform the system hardening procedures described in this document and with which you should be familiar. (This is not an all-inclusive list of policies and procedures that affect information technology resources.)

UTB/TSC Acceptable Use Policy

Information Resources Use and Security Policy

UTB/TSC Data Classification Policies

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