Troubleshoot computer network and security

• Performed solid hand on high end core switches, Cisco (3550, 3560, 3750, 4500) and Nortel 8600 • Configured VTP domain, VLANs, uplinks (ether-channel, trunks and SMLT), QoS, STP and troubleshooting as well • Implemented FortiGate firewall security as anti-spam, anti-virus, IPSec, Gateway to Gateway VPN, client to site VPN • Implemented policy and use suitable profiles to fit the organization nature • Divided the network into Zones (DC, DMZ, Internal and External) • Implemented RSA (Primary & Replica) servers • Implemented and configured Cisco autonomous and lightweight access point • Configured Nortel indoor WS (WSS, WMS) • Configured Cisco 1300 wireless Bridges and established many links from site to site • Implemented Static and dynamic routing (OSPF, RIPv2, EIGRP, BGP) • Administered network stations and monitor the network by Solar winds • Evaluated and recommended purchases of all IT Procurement (Switches, Routers, Patch Panel, UPS-raised floor, CCTV, Access control system, Printers, computer spare parts and accessories) • Anticipated communication and networking problems and implement preventive measurement • Investigated user and site problems and find, test and implement solutions • Documented problems and their solution as a reference