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Sr. Individual Contributor / Sr. Network Architect / Sr. Software Engineer / Sr.

QA Engineer
/ Sr. Technical Support Engineer / Founder and Seasoned Instructor actively involved in
Advanced Research and Development of networking software for the U.S. Government Agencies
(NSA, CIA, FBI, DoD, U.S. Weapon Systems, NASA, Lockheed, NAVY, Air Force, ARMY, County
of Marin, Bay Area Air Quality Management, NGC, DISA, etc.) and commercial industries. Over
30 years of wide ranging experience, including teaching at the university level.


HARDWARE & SOFTWARE: PCs, Sun, Mac, Network Cards, MAUs, HUBs, LAN/WAN
Switches, ATM Products, Optical Communication Products, Bridges/Routers ( C6500, C4900,
C2900, C2600, 3560E series, Cisco 25xx, 36xx, 4000 & 7000 series, GSR, HFR (Terabit Switch
Router), 3COM Products), DSU/CSU, Muxes, Terminal Servers, Cascade Frame Relay Switch,
Sniffer, Traffic Generator, Digitizing Oscilloscope, Microtec X-Ray, Navtel Protocol Analyzer,
Telenex Interview Network Switch Emulator, HP OpenView, Network Encryption Unit, Network
Management Stations, Cisco IOS, Cisco ENA, Extreme Networks Products, D-Link Wireless
Broadband Router, Earthlink BroadMax DSL Modem, Adobe GoLive, Dreamweaver, Cisco
Catalyst, Network Security Products (Safenet IRE Client, SonicWALL VPN/IPSec product,
ActivCard, Baltimore Unicert, Entrust/PKI, Microsoft Baseline Security Analyzer, Ethereal, Harris
Stat Scanner, LC4, Ping Plotter, Sam Spade, Super Scan, Trip Wire, Web Ferret, WS Ping Pro,
ISSNT, Air Snort, AP Scanner, Dstumbler, Net Stumbler, PIX Firewall, Symantec Norton Internet
Security 2003, Symantec ManHunt), VMware, Cisco CallManager, Tasker, WatchGuard Firebox X
Peak/Core e-Series, Qualys AuditScan, AccuRev, IXIA 1600T, WWP LE-311v, Mercury Quality
Center 9.0, Juniper M20, CloudShield CS-2000, Extreme Network Products, EPICenter, SoapUI,
2Wire Home Portal 3000 Series, CMS (CPE Remote Management System), HP Proliant Server,
VNC, iPad 2, Dell EqualLogic Storage Array, Dell OpenManage Essentials, Dell PowerEdge R710
/ R910 Systems, Packet Tracer 6.0/6.1, Squish, Eclipse IDE, NETLAB+, vSphere, vCenter, MS,
ESX host, Cisco Cloud and System Management Technology, REST API, OpenStack, VMWare

OPERATING SYSTEMS: UNIX (BSD, SYS V, Linux, Fedora, Red Hat, SELinux, CentOS), Win
98/Win 2000/Win XP/Windows 7, NT, POSIX, Real-Time Embedded OS (VxWorks, pSOS,
Nucleus RTOS, RTX, QNX).

PROTOCOLS: TCP/IP, OSI, AppleTalk, IPX, WAN (PPP, cHDLC, X.25, Frame Relay, ATM, xDSL,
VPDN), LAN (Ethernet, Gigabit Ethernet, Token Ring, High Speed Token Ring), Routing
Protocols (RIP, IGRP, EIGRP, OSPF, Integrated IS-IS, BGP-4), Bridge Protocols (IEEE 802.1d),
Network Management (SNMP v1/v2/v3), UNIX Networking, VoIP, MPLS, VPLS, VPN and Traffic
Engineering, VLAN, ESRP, QoS, Content Delivery, SAN, NAS, Network Security (Internet
Security Monitoring and Filtering, VPN/IPSec, Firewalls, PKI, AAA, SSO, IDS, Intrusion
Prevention, Policy Based Provisioning, Wireless Security, Cryptography, SSL), LDAP, EMISTP,

PROGRAMMING LANGUAGES: C, C++, Pascal, Ada, Shell, Tcl, Perl, Pthreads, Java,
Python, Jython

CERTIFICATION: Extreme Network Certified Expert, CCNA (Cisco Certified Network Associate),
Certified CloudShield Solution Developer


Aruba, a HP Enterprise Co. / Cal Lab Solutions, Inc., Santa Clara, CA
Jan. 2017
Independent Consultant

0/6. a HP. and submitted ClearQuest CRs Cisco Systems. Talon HA. MR5" • Tested ioTurbine/ioVDI for performance under vSphere. Violent Python CISCO SYSTEMS. DNS. CA May 2013 . applications. Architect (Persistent) • Worked at Cisco Cloud and System Management Technology Group on Cisco Mozart Solution. and the associated infrastructure of cloud computing under OpenStack cloud environments.. San Jose. 2014 QA Consultant • Tested "6HD-Light Gig RG".0 product using N* Simulator.4 5168NV BDC Configuration". and controls deployed to protect data. • Executed appropriate test methodologies such as manual and automated functional and regression tests through the development iterations. 2014 QA Project Lead (CISCO) / Sr. KWANGNET. NAT.4 Targeted Ad Insertion Configuration MOP". CA / Persistent Systems. writing automation scripts. 2015 - Present Founder  Researched in Cloud Computing Security which refers to a broad set of policies. vCenter.9. DHCP Cisco PNR. • Tracked. etc. VMWare environment using Python • Tested Intellego 6. NTP. "AT&T CMS 3.. and filing bugs) for Packet Tracer 6. Squish. dynamic) on CSR1000v.  Studied and practiced Python. VMWare environment. VMC. 2012 .. "AT&T CMS 3. Java. Gray Hat Python. CA Jul. • Worked with other test engineers and development teams on extending test automation. reported bugs and provided detailed bug reports through the project life cycle. C++. Routing (static. San Jose. INC.Mar. Software Engineer) • QA works (testing. • Designed and executed test plan and test cases for tail-f/CC/ESC components. MS. A very short term contract  Installed and brought up QEMU/KVM environment on all 8 HP ProLiant DL 360 Gen 9 servers and deployed different VMs on KVM servers on the same rack at the data center at Aruba.Jan. NETLAB+ . MPLS on Cisco ASR 9k. Policy Based Routing. additionally Python with Network Security such as Python Penetration Testing Essentials. "Disable VOIP For Supported Motorola RGs".Dec. San Jose. Eclipse IDE. San Jose. Backup and Restore. Perl more in depth.45 Firmware Upgrade Testing. 2014 . Inc. technologies. Inc.1 development using Python.. "NVG510 VOIP Configuration Settings".1. testlink. ESX host. parts of Cisco Mozart solution. • Attended Agile Training AT&T Labs. 2013 QA Consultant (Sr. CA Jan . Black Hat Python. Jun. documentation. "Mauna Jea 6. • Tested REST API and CLI on tail-f/CC/ESC components and automated them in Python/Jython under OpenStack. Fusion-io and SS8. Zones. Inc. • Tested Layer 2 and Layer 3 protocols like Firewall ACL.

Python. CA Mar.. 2011 . 2014 Instructor  CCNA . Inc. "IPTV-DColl / DB Backup & Restore Project". Redhat. e-Admin.Apr. San Jose. i- Frame. and resolved customer issues. VNC environment for INTEL. "CuteFTP 8 Professional”. 2010 . This request is for opening ports 20 and 21 from the IPTV servers to the Tier-1 DCOLLS and from the Tier-1 DCOLLs to the Tier- 2 DCOLL. "Business_Requirements_For_LTE_UDC"  E2E (End-to-End) Policy Configuration Project  Discussed about "LTE Policy configurations”. If this rule is removed. CMS (CPE Remote Management System) using TR-069. CA Feb. SoapUI. and i-Recipe under Fedora. Networking Basics for Non- Technical Professionals . 2009 . 2012 QA Consultant  Supported DELL/AT&T/TURN Systems at QTS Data Center  Tested CD-SEM (Hitachi’s CD-Measurement SEM. PCRF and Gx"  Some answers and insights into the questions about 3GPP standards  Analysis of IPTV UDC traffic . and "Tier-2 SCOM management responsibility"  LTE (Long Term Evolution) UDC Project  Discussed about "LS UDC slides & LTE UDC req.Dec. The new firewall rules only allow 4900-4999 passing through for the data collector traffic. This flow will be used by legacy Data Collector flows. San Ramon.. CG4000 and CG5000). Java under Windows/Linux UNIVERSITY OF CALIFORNIA.  CR3753: Change to Data Collector flows. 2010 . and provided slides "Policy Configuration of PCEF.Routing and Switching. CA Sep. This is to make sure the bulk transferring from IPTV servers are marked as Best Effort if originating from port 4900-4999. and submitted a proposal to Operations Users and PSL Lab to Solve CR3753. Inc. 2010 QA Consultant  Tested 2Wire Home Portal 3000 Series. BERKELEY EXTENSION Evenings Sep. AT&T Labs. and Hitachi High Technologies America.  Discussed about "AT&T/ALU Architecture Network Capabilities". CCNA .Dec. 2010 Consultant at Network Architect Group  IPTV-DCOLL Project (Light Speed Unified Data Collection Project)  Worked on the solution to help the legacy data collection migrating to UDC architecture..• Presented IPSec at Internal Symposium • Scrum/Agile environment DELL/AT&T/TURN.1”. Pleasanton. VMWare.Jul. trained FSEs to release the products.Draw a graph for Rx Util % and Tx Util % 2Wire.  Tested various ftp clients including “Core FTP LE 2. “Cygwin”.". and provided slides "Lightspeed UDC Overview".Network Security. Inc. the bulk data transferring will subject to risk to compete with other traffics through the firewall link.

 Working according to shift schedule.  Experience of using network monitoring and analysis tools to debug Ethernet/Wireless/IP layer problems. recreating.  Providing entitled customer base a very high quality of support experience either via phone. providing informal and/or formal training on company products to the customer's staff.  Performing. 2006 . Spirent) and network management tools. providing informal and/or formal training on company products to the customer's staff.  Automation script in Tcl.Nov. as required. Linux/UNIX/Windows operating systems.  Troubleshooting. engineering and product management to escalate and resolve issues.  Performing. on-site upgrade activities or investigations of reported problems. as required. tracking.  Used Advanced networking skills.  Experience in WLAN testing in advanced/security protocols (WEP.11e. CA Dec. providing feedback from customers to product management and engineering teams via appropriate systems. Santa Clara. WPA2/AES/802. and Experience of network test equipment (IXIA.  Replicating and testing customer configurations in a lab environment. maintaining and managing customer network monitoring systems.  Providing entitled customer base a very high quality of support experience either via phone. engineering and product management to escalate and resolve issues.Extreme Networks.Aug. IPSec VPN. WME/WMM/802. TCP/IP).  Experience of WLAN.  Experience of Functional / Feature Testing as well as System Testing. Perl CloudShield. and verifying software defects in the field or under lab conditions reported by customers. L2/L3 (Ethernet. and maintaining on-call phone availability. maintaining and managing customer network monitoring systems. Firewalls). diagnosing and resolving technical customer issues associated with company’s equipment on-site at the customer site. phone shifts and weekend shifts. Technical Support Engineer  Supported Extreme Networks Products under ExtremeWare and EXOS using Siebel System  Troubleshooting.11i. Interfacing with other technical support personnel. recreating. and verifying software defects in the field or under lab conditions reported by customers. HTTP. 2008 Sr. diagnosing and resolving technical customer issues associated with company’s equipment on-site at the customer site. WPA/TKIP. DoD. SNMP. email or onsite support (if required). phone shifts and weekend shifts. CA Oct. providing feedback from customers to product management and engineering teams via appropriate systems.  Replicating and testing customer configurations in a lab environment. and maintaining on-call phone availability.1 xs. 2007 Sr. Interfacing with other technical support personnel. on-site upgrade activities or investigations of reported problems. tracking. Sunnyvale.  Working according to shift schedule. 2007 . Technical Support Engineer  Supported CS-2000 and performed RFC 2544 throughput test using IXIA for NSA. 802. and Experience of network test equipment (IXIA) and network management tools.  Reducing active backlog by 5% month over month  Closing cases within 30 days other than exceptions such as Wait/software. etc. email or onsite support (if required).  Reducing active backlog by 5% month over month  Closing cases within 30 days other than exceptions such as Wait/software.  Developing 3 or more Solutions per month  Used Advanced networking skills. .

and Bay Area Air Quality Management 2003 Consultant  Researched. Cryptography. CCNA.  Automation script in Tcl. Linux/UNIX/Windows operating systems.). EIGRP.  Tested and implemented automation scripts in Tcl. WINCOM SYSTEMS.. Inc.Nov.. 2005 Founder  Provided training classes for Network Security. CA Nov. and CINENSIS. and encryption devices for wireless security (Cinensis. and scanned using Qualys AuditScan (on-demand security audit and vulnerability management service). TCP/IP. 2002 Senior Development Test Engineer . Mobile User VPN Tunnels.  Experience of Functional / Feature Testing as well as System Testing. and designed websites for centralized security management (KwangNet). architected software/hardware products. SNMP. VNC. Citrix Administration Tools. HTTP. INC. and tested Citrix Application Gateway. test plans. 2002 .  Implemented testing tools. Inc.) to receive funding from VCs. KWANGNET (www. PIX firewall configuration and dual homed server setup KWANGNET. San Jose.3 ProviderBackbone Transport (PBT) using WWP LE-311v. 2005 .. and CITRIX. Mercury Quality Center 9. Perl World Wide Packets. Nortel.. CA Apr.  Tested Citrix and Safenet SSL VPN clients co-existence. San Jose. INC. 2002 - 2003 Founder/Co-founder of 3 Startups  Built a team. Citrix Broadcast Server..Sep.  Experience of using network monitoring and analysis tools to debug Ethernet/IP layer problems. PPTP User VPN Tunnels for Pandora 9. SYMANTEC Corp.0. Santa Clara. Inc.kwangnet. IXIA 1600T.Dec. Tasker and VMware. Avaya IP phones and wireless devices in Perl using Cygwin. San Jose. a smart card business for healthcare (REDMedic. CA Evenings Jan. TCP/IP). 2003 . 2006 QA Consultant  Tested LE-OS 4. REDMEDIC.  Tested Branch Office VPN Tunnels.0. WatchGuard Technologies. Citrix Design Studio for Cisco. Web Design. CA Jan. using WatchGuard System Manager.  Experience of L2/L3 (Ethernet. and AccuRev. and developed IDS signatures for Symantec ManHunt  Cisco Catalyst 6513s in a redundant configuration. defined a business plan. County of Marin. test plans to achieve Common Criteria certification of WatchGuard products for DoD.

Cscope. MADGE NETWORKS. SAN. San Jose. CA 1994 - 1995 Network Architect  As a Project Lead.  GSR/ENA Project – For Black Box Testing.  Designed. Server and Storage Load Balancing. SYSDB TCL Extensions. INC. . analyzed Cisco Test Tools such as SYSDBCON. CA 1995 - 1998 Network Analyst  Supported Lannet and Madge products. established familiarity with ENA Component Development. and prepared CCIE. resulting in the development of Testing Application Software in C for ATM and cHDLC components under CTF. APPLE COMPUTER and 3COM CORP. BALLISTA. filed DDTS (Bug Report). ported ATM drivers for SCO UNIX. resulting in the development of device driver for TMS380C27 comprocessor board in Network Encryption Unit. Source Navigator. 1993 - 1995 Consultant  Designed. HTTP Tunneling. attended IETF. Implemented testing tools and tested Wincom Switching Server (Content Delivery... CA 1998 - 2001 Senior Software Engineer. resulting in the development of Tcl Automation Script for ENA/ATM on GSR such as OAM-PVC/ILMI-PVC/VC-CLASS/PVCD under ATS-EASY environment. Santa Clara. implemented functionality/stress testing tools in C and shell script to test boot/change management utilities. Perl. wrote ENA VPDN Feature Test Plan Document. and built my own ATM Router to manage Ethernet/Token Ring ELAN/IP over ATM.4. IOS/ENA-WAN Connectivity Group  GSR/ENA Project – For White Box Testing. used some tools such as CodeTest. FlexeLint. provided network security in LAN/WAN. CSCCON. Routing Protocols. completed automation of all test cases called out in the Test Plan.0 to ATS-EASY. Shell under Linux. CCAST. Cflow/ENA to get code coverage. SEMAPHORE COMMUNICATION CORP. implemented. Cflow/IOS. used Gdb. converted existing ENA cHDLC test script from ATS 3. SSL. CISCO SYSTEMS. and designed. as a Project Lead. NAS. and modified performance tools for the Transport Independent Interface (TII) client and endpoint for the new AppleTalk protocol architecture under MPW C++.  HFR/Distributed ENA Project – Reviewed HFR Hardware/Software Architecture. and MPLS. Component Testing Framework (CTF). San Jose. UNIVERSITY OF CALIFORNIA. Web Firewall Functions) in C. attended Cisco training classes. implemented the Internet firewall device driver under Solaris 2. INC. SANTA CRUZ EXTENSION 1999 - 2002 Instructor  "TCP/IP Protocol Architecture" – covering TCP/IP/IPv6. Ctrace. Source Navigator to trace source code. implemented stress test shell scripts for testing UNIX drivers.

CVOICE. Hebrew (r/w. Chinese (r/w.. Web.ADDITIONAL EXPERIENCE 1980 - 1993  Includes work as a Senior Software Engineer with Extreme Networks. High Quality Software Engineering. Golf. Teaching. Ford Motor Company. MI 1980 MS . Test Technology Boot Camp. Drawing. BCRAN. Learning Foreign Languages. DAVID Systems. Learning) HOBBIES Violin. Internet Security: Advanced Topics.Dual majors in Mathematics and Computer Engineering PROFESSIONAL DEVELOPMENT TRAINING CLASSES: SunNet Manager. Internet and E-Commerce Security. Vitalink Communications Corp. Test Methodologies. Ungermann-Bass. Internet Cryptography. Clearcase. Internet Systems Corp.K. CISSP Review Sessions. Computer Engineering Courses from Stanford University thru SITN. Chungbuk National Univ.. Computer. Become an Entrepreneur: Start Your Own Business. RAVE Programming. E- Commerce Security: Firewall and Access Controls. Ltd. IOS Architecture. Wireless Security Forum. Piano. and Frame Relay. Inc. CATM. BGP (Grade A). Conference Proceedings). Cisco Internal Networkers Conference. EDUCATION SEOUL NATIONAL UNIVERSITY. MCNS. Cisco IOS Memory Troubleshooting. Camping. LANGUAGES English (r/w/s). Samsung Electronics Co. Korea Univ. Korea 1977 MS – Mathematics UNIVERSITY OF MICHIGAN. Overview of Cisco Products. Agile Training PROFESSIONAL PUBLICATION "Why do we have problems designing and implementing with Military Standard . IOS Device Drivers. Intrusion Detection. French (r). Fujitsu. Cello. Advanced ENS training. Arix Corporation. CMTD.. Listening to music. ATM. Building & Debugging Cisco IOS Images. GSR 12000 Series Technical Product Training. Korea Information Assurance Society for seminars. Chinese. CIT.. CID. VoIP.11b and Other Protocols. ICRC. ACRC.. POSIX Threads Programming. Microkernel System Architecture. Smart Card. Korean (r/w/s). University of Michigan. Cryptography. Seoul National Univ. IXIA training. Dong-Eui Univ. Berkeley Extension.. Ann Arbor. RSA Conference. ExtremeWare CLI Switch Layer 2/Layer 3 Management & Configuration. Michigan Technical Institute. and work as a Research Scientist/Educator at University of California. Hands- On VPN Design and Implementation (Grade A). MPLS Technology Essentials. Eastern Michigan University. German (r/w).Internet Protocol (MIL-STD-1777) ?" (IEEE PCCC-86.. Understanding QoS in IP. The Wollongong Group. Business and Professional Writing. Java Programming. ETRI. Wireless Security: 802. Photography. Japanese (r/w/s. Stanford Computer Forum (Security Workshop). Informix Software. Korea Institute For Defense Analyses. Watching movies. and Madge-Israel. Learning). Japanese. HFR. KAIST. DDTS. Sentriant AG/NG training. Inc. IMCR.Lannet and Madge Products Training from Madge-U. Traveling. Bowling. Invited from KIST. Seoul. Getting Stated with IOS/ENA Programming. IOS/ENA Architecture. . Learning). Reading the Bible.

2015. CITIZEN . etc. I have a photographic memory. Hand Acupuncture. Archery. I’ve been chosen to be an Extreme Star. I have an IQ of 162. Cooking. Swimming. Japanese Calligraphy (sho). NSA SECURITY CLEARANCE IN 2009 U. Web Design. Guitar.Singing. A tutor for CALCULUS BC. Fishing. Harmonica. Provided "FREE INTENSIVE SAT I MATH class at New Vision Church" on every Saturday since June. Pool.S. Dancing.