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Understanding "Red Forest" - The 3-Tier ESAE and Alternative Ways to Protect Privileged Credentials
- 1. Sponsored byUnderstanding“RedForest”:The3-Tier EnhancedSecurityAdminEnvironment (ESAE)andAlternativeWaystoProtect PrivilegedCredentials © 2017 Monterey Technology Group Inc.
- 2. Thanks to Made possible by
- 3. Preview of key points Very important concepts PtH Logon types are not created equal Security dependencies Clean source The problem with AD Forests The 3-tier AD security zone design DeployingTier 0 in a “red” forest Completing the Enhanced SecurityAdministrative Environment Beyond How far does ESAE get you? Alternatives and gaps Privilege management
- 4. Pass-the-hash To view this webcast: https://www.quest.com/webcast- ondemand/understanding-red-forest-the-3tier-enhanced- security-admin-environment8121798/ And related to credential artifact theft Randy Smith/QuestWebinar: Deep Dive: Understanding Pass- the-Hash Attacks and How to Prevent https://www.quest.com/webcast-ondemand/-understanding- pass-the-hash-attacks830251
- 5. Logon types are not created equal The difference between interactive and network logons Same goes for other logon types Interactive logon Network logon hash hash
- 6. Security dependencies Control relationships create security dependencies Subject Controls Object Security dependency
- 7. The problem withAD forests Domains inside a forest are not security boundaries The forest is the “security boundary” A lot risks with admin accounts in the same forest they administer Privilege escalation Credential theft Control over each other No security zones
- 8. The 3-tier design Tier 0 – Domain Admins Tier 1 – Server Admins Tier 2 –Workstation Admins
- 9. Tier isolation Accounts Servers Workstations Logon types Cross-restrictions
- 10. DeployingTier 0 in a “red” forest Tier Zero should be in a different forest Production forest trusts red forest No domain admin or similarly privileged accounts in production forest Except emergency access account – built-in Administrator Red forest dedicated to simply holdingTier 0 accounts for administering production forest Tier 0 accounts do not have privileged access to red forest Accounts needed for that purpose might be considerTier -1
- 11. The parts Domain Admins Administrators Administrator
- 12. The parts trust Domain Admins Administrators Administrator Delegated Permissions Domain Admins Administrators Administrator
- 13. The parts trust Domain Admins Administrators Role B Role A Role C Administrator Domain Admins Administrators Administrator Delegated Permissions
- 14. The parts trust Interactive logon Domain controller Network logon
- 15. Completing the Enhanced Security Administrative Environment Identifying who needs what Classification into tiers Creating roles Cleaning up old accounts Quest Enterprise Reporter Training Privileged AdministrativeWorkstations
- 16. Beyond How far does ESAE get you? Alternatives and gaps Privilege management
- 17. How far does ESAE get you? Manages risk for Active Directory Windows OS Doesn’t address Many applications aren't compatible with being administered by accounts from an external forest using a standard trust UNIX/Linux Devices
- 18. Alternatives and gaps ESAE doesn’t stop with a red forest Tier 1 should be secured with a privilege management solution Check out Quest PAM/PSM solutions 2 factor authentication MS assumes smart cards But one time password has significant advantages Quest Defender Alternative: proxy technology Active Roles GPO Admin
- 19. Bottom line Really need to understand security dependencies Identify control relationships Implementing ESAE Need good reporting How best to address them Red forest is one way to address those risks in AD and Windows Privileged Account and Session Management Solutions Go beyond AD andWindows Proxy technologies provide a compelling alternative or compliment to isolated red forest Understand the limitations of smart cards and the advantages of OTP Check outQuest © 2017 Monterey Technology Group Inc.
- 20. “Red Forest” Bryan Patton, CISSP
- 21. Identify who is doing what
- 22. Confidential22 Executive Order 13636 issued February 12, 2013 NIST Framework
- 23. Confidential23 Identify applications on assets that require administrative rights
- 24. Confidential24 What are some privileged accounts in an environment? Identify Privileged Accounts • Domain Admins • Enterprise Admins • Local Administrators • SA • Helpdesk • OU Admins • Service Accounts • Unknown
- 25. Confidential25 Identification of known Privileged Accounts
- 26. Confidential26 Identification of unknown Privileged Accounts
- 27. Confidential27 Identification of Privileges on computer accounts
- 28. Confidential28 Identification of third party software on DC’s
- 29. Confidential29 Identification of what accounts are doing
- 30. Protection
- 31. Confidential31 Changes to Active Directory via proxy
- 32. Confidential32 Protect Active Directory- Enforce Least Privilege Access
- 33. Confidential33 Protect Workstations- Enforce Least Privilege Access
- 34. Confidential34 Protect hardware- block USB
- 35. Confidential35 Protect- Implement Group Policy
- 36. Confidential36 Protect- Workflow Approval Process Request Review Approve Commit Immediate Schedule Email Approve? Approve Deny View Details Rejection Comments Email Approve? Approve Deny View Details Rejection Comments Email
- 37. Confidential37 Protect- Prevent “Privileged Users” from performing actions
- 38. Detect
- 39. Confidential39 Detect- What can we do?
- 40. Confidential40 Detect- GPO Changes outside of version control system
- 41. Respond
- 42. Confidential42 Respond- Quickly search to identify relationships
- 43. Confidential43 Respond- Changes through Active Roles
- 44. Confidential44 Respond- Changes outside of Active Roles
- 45. Confidential45 Pre and post actions enable users to execute custom scripts before or after a GPOADmin action to facilitate integration with internal processes and systems. Respond after making a change to a GPO
- 46. Confidential46 Respond- use data to change what accounts are allowed to do
- 47. Recover
- 48. Confidential48 Recovery Active Directory from attribute to Forest level
- 49. Confidential49 Recovery a GPO to a specific version