YGGSEC

Case Studies

Representative Project Outcomes

All examples are sanitized and representative to preserve confidentiality.

Legacy Firewall Modernization for Multi-Site Operations

Challenge

A distributed environment relied on aging firewall policy with inconsistent NAT rules and limited change traceability.

Approach

Conducted rulebase analysis, grouped redundant policies, planned phased ASA-to-FTD migration, and validated traffic flows at each checkpoint.

Outcome

Reduced policy complexity, improved auditability, and completed migration with controlled cutover windows.

Tools

  • Cisco ASA
  • Cisco Secure Firewall FTD
  • FMC
  • Change Runbooks

Sanitized and representative example.

Secure Remote Access Rebuild for Hybrid Workforce

Challenge

Remote access posture lacked MFA consistency, certificate governance, and resilient client behavior.

Approach

Designed certificate-based auth, integrated Duo MFA, and implemented Always-On VPN policy with exception handling.

Outcome

Improved access assurance and endpoint connectivity stability with documented operational ownership.

Tools

  • Cisco Secure Client
  • Duo MFA
  • AD CS
  • Operational Runbooks

Sanitized and representative example.

Network Logging Uplift for Incident Response

Challenge

Security team lacked normalized network telemetry in SIEM, delaying triage and investigations.

Approach

Implemented secured syslog and HEC ingestion, mapped key fields for search consistency, and validated event coverage.

Outcome

Faster investigation workflows and more actionable detection context across network controls.

Tools

  • Splunk
  • Syslog TLS
  • HEC
  • Data Normalization

Sanitized and representative example.