David Chan Email & Phone Number

Chicago, Illinois, US

Bronx, New York, US

New York, New York, US

• Responsible in all technical aspects of LAN, WAN, Wireless, VoIP, VPN and security internetworking projects including, short and long term planning, implementation, project management and operations support as required.
• Administrate and maintain the security policy on Juniper Firewalls such as ISG1000/2000 and SRX 1400 using NSM, and Cisco ASA 5500 series using SDM.
• Administrate and maintain the security policy on Juniper SSLVPN appliances such as SA2000 and SA4500.
• Administrate and maintain A10 LTM Load Balancers for Web application.
• Administrate and maintain Cisco and Aerohive wireless network infrastructure.
• Administrate and maintain Bradford Network Access Control (NAC) service.

New York, New York, US

• Responsibilities include on call support for Level 2/3 network issues, change requests, configuration, maintenance, and redesign of the network.
• Monitoring the network performance and utilization on all of Cisco routers/switches, Juniper firewalls, Juniper SSLVPN appliances, and A10 LTM Load Balancer.
• Troubleshot multiple protocols including IP, OSPF, EIGRP, BGP, HSRP, STP, and VTP on Cisco routers and switches.
• Interacted with a variety of telecommunication vendors (Cisco TAC, JTAC, Abovenet, AT&T, Verizon) who provided physical connectivity, circuits include (DS1, DS3, Frame-Relay, ISDN PRI/BRI, Metro Private line, DSL).
• Configured and Troubleshot Cisco routers 2600, 3600, 2800, and 7200; Catalyst switches 2950, 2960, 3550, 3750/3750X,4948, and 6513.
• Maintained Visio documentation database of network topology and helped establish guidelines and standards for change procedures.

Stamford, CT, US

• Member of project planning team on datacenter migration project.
• Mapped internal network infrastructure of approximately 400 servers and a multitude of network devices.
• Documented the physical and logical connectivity of all Cisco switches, routers, Checkpoint firewalls, and other network appliances in the network
• Wrote comprehensive move plans on all servers and network devices with minimal down time
• Configured and troubleshot Cisco series routers 2600, 3600, 2800, and 7200, Catalyst switches 2950, 2960, 3550, 4948, and 6513
• Work closely with network architect and engineers on troubleshooting any network issues arise during the datacenter migration

• Designed, implemented, and configured network service using SonicWALL Network Security Appliance
• Implemented, and configured Microsoft AD, DNS, Printing, FTP, and Exchange 2003 services
• Provided technical support in network, server, and desktop (Macintosh and Windows)
• Performed software and hardware installations and technical support in accordance with client priorities
• Monitored the integrity of servers, user connectivity, and telecommunication service
• Obtained quotations for computer equipment, software, and local services as required

Santa Clara, California, US

• Built Microsoft Windows 2000 and 2003 Servers, Windows 2000/XP workstation, and Linux workstation for Engineering Validation labs
• Administrated and maintained the Microsoft 2000/2003 servers (FTP, IIS, Print, License) and the network of Engineering lab domain
• Setup and maintained the network security on servers and workstations according to Intel security guidelines
• Backed up and restored Windows and Linux systems using Norton Ghost Enterprise edition
• Analyzed and debugged all types of workstation, server, and network issues
• Installed and configured system hardware in Win NT, 2000, XP, and Linux 7.0 and 9.0 workstations