Security Hardening
Kerberos Hardening Guide
Comprehensive security hardening guide for Kerberos authentication systems. Implement best practices to protect your Active Directory environment from common attacks and vulnerabilities.
Advertisement
Kerberos Security Hardening Framework
Multi-layered approach to securing Kerberos authentication infrastructure
Authentication Security
6 security controls
Service Account Protection
6 security controls
Delegation Controls
6 security controls
Monitoring & Detection
6 security controls
Security Hardening Categories
Authentication Security
Essential security controls for authentication security
Enable Kerberos pre-authentication for all accounts
Use AES encryption instead of RC4
Implement strong password policies
Configure appropriate ticket lifetimes
Disable weak encryption types
Enable account lockout policies
Service Account Protection
Essential security controls for service account protection
Use Managed Service Accounts (MSA/gMSA)
Implement strong service account passwords
Regularly rotate service account credentials
Minimize service account privileges
Monitor service account usage
Avoid shared service accounts
Delegation Controls
Essential security controls for delegation controls
Avoid unconstrained delegation
Use constrained delegation where needed
Implement resource-based constrained delegation
Regular review of delegation settings
Monitor delegation usage
Document delegation requirements
Monitoring & Detection
Essential security controls for monitoring & detection
Enable advanced audit logging
Monitor for Kerberoasting attempts
Detect unusual ticket requests
Implement SIEM integration
Set up alerting for suspicious activities
Regular log analysis and review
Implementation Roadmap
Step-by-step approach to implementing Kerberos security hardening
1
Domain Controller Configuration
Secure your domain controllers with proper Kerberos settings
Configure supported encryption types
Set appropriate ticket lifetimes
Enable audit logging
Implement time synchronization
2
Group Policy Implementation
Deploy security policies across your domain
Configure Kerberos policy settings
Implement password policies
Set account lockout policies
Deploy security templates
3
Service Account Management
Secure service accounts and their configurations
Migrate to Managed Service Accounts
Review and update SPNs
Implement credential rotation
Audit service account permissions
4
Monitoring Setup
Implement comprehensive monitoring and alerting
Configure Windows Event Logging
Set up SIEM integration
Create detection rules
Establish incident response procedures
Security Controls Matrix
Mapping security controls to common Kerberos attack vectors
| Attack Vector | Primary Control | Secondary Control | Detection |
|---|---|---|---|
| Kerberoasting | Strong service account passwords | Managed Service Accounts | Monitor TGS requests |
| ASREPRoasting | Enable pre-authentication | Strong password policy | Monitor AS-REP requests |
| Golden Ticket | Regular KRBTGT rotation | Privileged access management | Monitor unusual TGT usage |
| Silver Ticket | Service account security | Service isolation | Monitor service access |
Testing Methodology
Validate your hardening with professional penetration testing
Read More
Security Auditing
Audit your Kerberos configurations for compliance and security
Read More
Attack Vectors
Understand threats to better implement security controls
Read More
Need Expert Kerberos Hardening Assistance?
Get professional Kerberos security hardening services and implementation guidance from certified experts.