VoIP, Cisco ASA, Palo Alto Firewall, Juniper Netscreen Firewalls, F-5 Load Balancing, Layer 1 thru 7 networks, DHCP, DNS, LAN/WAN, WLAN, VLAN, VTP, TCP/IP, IPv4 / IPv6 Ethernet, MPLS,VPLS, OSPF, SNMP, Nexus, Cisco switches, Cisco routers, CatOS/IOS, NetOS, ISPs, IPSEC, split tunneling, RF and Network System Performance, ACS network control, Cisco WCS, HTTPS, Fiber optics, SolarWinds, Nagios, WireShark, Cascade Pilot Analyzer, Fluke, IEEE 802.11 a/b/g/n, WAN Accelerators, SSL-VPN, Traffic monitoring, Cisco Meeting Place, Cisco Call Manager/Unity, AAA, WEP, Wi-Fi analyzers and packet sniffers, EXFO, IBM Mainframe, Service Desk Agent, NOC, IDS/IPS, Envision, Unix/Linux, Pronet, Metro Ethernet, Circuit Provisioning, MS Windows, MS Active Directory, Metro Ethernet.