Nat, Routing And Switching, Vpns, Switches, Ipv6, Dns, Firewalls, DHCP, Routers, Cisco Aci, BGP, Cisco Nexus, Palo Alto, Load Balancers, Load Balancing, OSPF, Fortinet firewalls, LAN WAN infrastructure, network proof-of-concepts, Mpls, Check Point, network environments, Acls, network hardware and software lifecycle, DNS appliances, ISP connectivity, SD-WAN