Harrison Gibbs Network Engineering · Cybersecurity · Automation
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PROJECT 02 / PYTHON · INCIDENT RESPONSE

Python Network Automation: Incident Response & Remediation

Automated DNS incident identification, response coordination, and remediation.

Project 2 cinematic midnight-blue portfolio overview infographic
01 / THE CHALLENGE

Engineering Problem

Incorrect or unauthorized DNS configurations can disrupt enterprise name resolution, interrupt critical services, and create security and operational risks. Manual investigation and remediation require coordinated device checks, incident documentation, escalation, and recovery procedures that can delay restoration. Engineering teams need a repeatable incident response workflow that identifies affected devices, restores trusted DNS settings, and verifies successful recovery.

02 / THE APPROACH

Technical Solution

Developed a modular Python automation workflow using eight scripts to support DNS incident detection, investigation, remediation, and resolution. Automated device inventory processing, connectivity and DNS checks, incident evidence collection, ticket creation, and stakeholder communications. Integrated DNS connectivity restoration, service restart, configuration correction, and post-remediation verification into a structured incident response lifecycle.

03 / THE VALUE

Business & Technical Value

Business Value:

  • Reduce service disruption through faster DNS incident identification, escalation, and coordinated remediation.
  • Improve operational efficiency by automating repetitive diagnostics, incident reporting, and stakeholder communications.
  • Strengthen business continuity and accountability through consistent recovery procedures, incident traceability, and resolution reporting.

Technical Value:

  • Demonstrate modular Python scripting, CSV inventory processing, DNS diagnostics, and automated incident identification.
  • Integrate incident ticket creation, email notifications, DNS configuration remediation, and service recovery workflows.
  • Establish repeatable incident response procedures incorporating validation, structured reporting, and post-remediation verification.
04 / TECHNOLOGY

Tools & Capabilities

Core Tools:

Python CSV DNS Diagnostics Ping SMTP Email Automation Incident Ticketing Command-Line Tools

Supporting Technologies:

TCP/IP IPv4 ICMP DNS Resolution DNS Configuration Device Inventory Incident Detection Incident Response Automated Remediation Service Restart Ticket Creation Structured Reporting Recovery Verification Stakeholder Notifications
05 / PROJECT EVIDENCE

Implementation & Validation Highlights

  • DNS Incident Detection & Analysis: Processed device inventory data, tested network connectivity and DNS settings, and generated structured reports identifying devices with incorrect or unauthorized DNS configurations.
  • Automated Response & Remediation: Developed coordinated Python workflows for security incident notifications, ticket creation, DNS connectivity restoration, service restart, and DNS configuration correction.
  • Recovery Verification & Documentation: Incorporated post-remediation DNS validation, resolution communications, and incident documentation to support repeatable recovery procedures and engineering traceability.
06 / BUSINESS IMPACT

Return on Investment (ROI)

$1.8M Cost Savings
70% Faster MTTR
$3.5M Avoided Downtime
2,400 Hours Saved

Explore the supporting portfolio

The canonical engineering documentation and infographics remain in the separate public portfolio repository.

Explore Project 02 on GitHub ↗