Network Security Networking Network Design Firewalls CCNA Cisco Technologies Routing VoIP Cisco Certified IP CCNP Cisco Call Manager QoS Cisco Systems Products VLAN Unified Communications Quality of Service QoS Cisco VoIP CCNP voice                                                                     B.Sc Engineering University of Moratuwa  Nalanda College, Colombo   Senior Network Engineer GBM Senior Network Engineer Millennium Information Technologies Network Engineer MillenniumIT  