Gabriel Milian-Guerrero

• Google Cybersecurity Professional Certification, 2025-04-01
• Cisco Certified Network Associate (CCNA), In progress

Homelab Environment | Personal IT Infrastructure Project: 2025-12-01 - Present

• Configured and administered a Cisco Catalyst 2960 switch and Cisco 1900 Series router, implementing VLAN, 802.1Q trunking, and inter-VLAN to segment and manage network.
• Deployed OSPF routing for dynamic routing and configured static routing and NAT to manage internal/external traffic flow and internet connectivity.
• Hardened network devices using SSH remote access, Access Control Lists (ACLs), port security, and DHCP snooping to prevent unauthorized access and mitigate Layer 2 attacks.
• Configured network services such as NTP, DNS, DHCP, and SSH; ensuring reliable IP addressing, name resolution, and time synchronization across the network.
• Diagnosed and resolved connectivity issues using Cisco IOS show commands, physical cable testing/inspection, and network troubleshooting methodology.