Purpose

This policy establishes information security requirements for all networks and equipment deployed in (^Company^) labs located on the "De-Militarized Zone" (DMZ). Adherence to these requirements will minimize the potential risk to (^Company^) from the damage to public image caused by unauthorized use of (^Company^) resources, and the loss of sensitive/company confidential data and intellectual property.

Scope

(^Company^) Lab networks and devices (including but not limited to routers, switches, hosts, etc.) that are Internet facing and located outside (^Company^) corporate Internet firewalls are considered part of the DMZ Labs and are subject to this policy. This includes DMZ Labs in primary Internet Service Provider (ISP) locations and remote locations. All existing and future equipment, which falls under the scope of this policy, must be configured according to the referenced documents. This policy does not apply to labs residing inside (^Company^)'s corporate Internet firewalls. Standards for these labs are defined in the Internal Lab Security Policy.

Policy

Ownership and Responsibilities

1. All new DMZ Labs must present a business justification with sign-off at the business unit Vice President level. The Infosec Team must keep the business justifications on file.

2. Lab owning organizations are responsible for assigning lab managers, point of contact (POC), and back up POC, for each lab. The lab owners must maintain up to date POC information with the Infosec Team [and the corporate enterprise management system, if one exists]. Lab managers or their backup must be available around-the-clock for emergencies.

3. Changes to the connectivity and/or purpose of existing DMZ Labs and establishment of new DMZ Labs must be requested through a (^Company^) Network Support Organization and approved by the Infosec Team.

4. All ISP connections must be maintained by a (^Company^) Network Support Organization.

5. A Network Support Organization must maintain a firewall device between the DMZ Lab(s) and the Internet.

6. The Network Support Organization and The Infosec Team reserve the right to interrupt lab connections if a security concern exists.

7. The DMZ Lab will provide and maintain network devices deployed in the DMZ Lab up to the Network Support Organization point of demarcation.

8. The Network Support Organization must record all DMZ Lab address spaces and current contact information [in the corporate enterprise management system, if one exists].

9. The DMZ Lab Managers are ultimately responsible for their DMZ Labs complying with this policy.

10. Immediate access to equipment and system logs must be granted to members of the Infosec Team and the Network Support Organization upon request, in accordance with the Audit Policy.
    
    
11. Individual lab accounts must be deleted within three (3) days when access is no longer authorized. Group account passwords must comply with the Password Policy and must be changed within three (3) days from a change in the group membership.

12. The Infosec Team will address non-compliance waiver requests on a case-by-case basis.

General Configuration Requirements

1. Production resources must not depend upon resources on the DMZ Lab networks.

2. DMZ Labs must not be connected to (^Company^)'s corporate internal networks, either directly or via a wireless connection.

3. DMZ Labs should be in a physically separate room from any internal networks. If this is not possible, the equipment must be in a locked rack with limited access. In addition, the Lab Manager must maintain a list of who has access to the equipment.

4. Lab Managers are responsible for complying with the following related policies:
   1. Password Policy 
   2. Wireless Communications Policy 
   3. Lab Policy
      
      
5. The Network Support Organization maintained firewall devices must be configured in accordance with least-access principles and the DMZ Lab business needs. All firewall filters will be maintained by the Infosec Team.

6. The firewall device must be the only access point between the DMZ Lab and the rest of (^Company^)'s networks and/or the Internet. Any form of cross-connection which bypasses the firewall device is strictly prohibited.

7. Original firewall configurations and any changes thereto must be reviewed and approved by the Infosec Team (including both general configurations and rule sets). The Infosec Team may require additional security measures as needed.

8. Traffic from DMZ Labs to the (^Company^) internal network, including VPN access, falls under the Remote Access Policy.
   
   
9. All routers and switches not used for testing and/or training must conform to the DMZ Router and Switch standardization documents.

10. Operating systems of all hosts internal to the DMZ Lab running Internet Services must be configured to the secure host installation and configuration standards. [Add url link to site where your internal configuration standards are kept].

11. Current applicable security patches/hot-fixes for any applications that are Internet services must be applied. Administrative owner groups must have processes in place to stay current on appropriate patches/hotfixes.

12. All applicable security patches/hot-fixes recommended by the vendor must be installed. Administrative owner groups must have processes in place to stay current on appropriate patches/hotfixes.

13. Services and applications not serving business requirements must be disabled.

14. (^Company^) Confidential information is prohibited on equipment in labs where non-(^Company^) personnel have physical access (e.g., training labs), in accordance with the Data Classification and Protection Policy.
    
    
15. Remote administration must be performed over secure channels (e.g., encrypted network connections using SSH or IPSEC) or console access independent from the DMZ networks.

Policy Compliance

Compliance Measurement

The Infosec Team will verify compliance to this policy through various methods, including but not limited to, periodic walk-thrus, video monitoring, business tool reports, internal and external audits, and feedback to the policy owner.

Exceptions

Any exception to the policy must be approved by the Infosec Team in advance.

Non-Compliance

An employee found to have violated this policy may be subject to disciplinary action, up to and including termination of employment.

Related Standards, Policies and Processes

• Audit Policy
• Data Classification and Protection Policy
• Lab Policy 
• Password Policy
• Wireless Communications Policy

Definitions and Terms

The following definition and terms can be found in the SANS Glossary located at:

https://www.sans.org/security-resources/glossary-of-terms/

• Access Control Lists (ACLs)
• De-militarized zone (DMZ)
• Least Access Principle
• Internet Services
• Network Support Organization Point of Demarcation
• Lab Manager
• Lab
• Firewall