Multi-VLAN-Enterprise-Network-Security-Infrastructure

Multi-VLAN virtual network across 10 VMs: GRE tunneling, nftables firewall, Active Directory, BIND9 DNS, Kea DHCP, Docker web services, SMB file sharing. Vulnerability assessment using OWASP ZAP (Stored XSS) and Nessus (CVE-2017-0144 EternalBlue). Validated with Wireshark.