Lyle Tagawa

Lyle Tagawa

Senior Network Janitor

Greater San Diego Area

Current
Past
Education
  • University of California, San Diego
  • Ryman Arts
  • Westchester
  • Conjunction Junction
Connections
108 connections
Industry
Information Technology and Services
Websites

Lyle Tagawa’s Summary

Appeasing the robot overlord.

Lyle Tagawa’s Specialties:

“I have no special talent. I am only passionately curious.”


Lyle Tagawa’s Experience

  • Director, Network Management

    Vertro, Inc.

    (Public Company; VTRO; Internet industry)

    March 2009Present (1 year 7 months)

  • Director, Network Management

    Alot.com

    (Public Company; VTRO; Internet industry)

    January 2007Present (3 years 9 months)

  • Director, Network Management

    MIVA Direct

    (Public Company; VTRO; Internet industry)

    January 2007March 2009 (2 years 3 months)

  • Lead Network Planning Analyst

    MIVA Direct

    (Public Company; VTRO; Internet industry)

    April 2002January 2007 (4 years 10 months)

    Performed capacity planning and analysis to project trends and anticipate server, network load.

    Designed, implemented 3-tier LAMP architecture, servicing 140MM dynamic, 12MM static requests/day.

    Managed global content delivery with BGP, DNS, server load-balancers, reverse-proxy caches.

    Negotiated BGP transit relationships with upstream carriers to handle failover and IP anycast topology.

    DDoS mitigation: protocol analysis, bogon filtering, null routing, BGP and IP anycast, NSP collaboration.

    Supported 4x growth of server infrastructure and network bandwidth, 3 data center migrations.

  • Systems Administrator

    FindWhat

    (Public Company; Information Technology and Services industry)

    February 2004June 2005 (1 year 5 months)

  • Systems Administrator

    Comet Systems

    (Information Technology and Services industry)

    April 2002February 2004 (1 year 11 months)

  • Contractor

    Internet Channel

    (Information Technology and Services industry)

    December 2001April 2002 (5 months)

  • Contractor

    Data2Vault

    (Information Technology and Services industry)

    December 2001April 2002 (5 months)

  • Consultant

    Arces Network

    (Information Technology and Services industry)

    October 2001November 2001 (2 months)

  • Consultant

    BET Interactive

    (Information Technology and Services industry)

    October 2001November 2001 (2 months)

  • Systems and Network Administrator

    Taos

    (Privately Held; Information Technology and Services industry)

    June 2000November 2001 (1 year 6 months)

    Deployed highly available infrastructure for Single Sign-on web services using Apache, BEA WebLogic cluster, and Oracle 8i/VxCS with shared storage (HDS over FC).

    Authored audit tools, enumerating NT4/5 domain servers, remote NTFS ACLs, Registry key/hives, IIS metabase, AT and Scheduled Tasks (ADSI, WMI APIs).

    Established client as an AS, setup initial BGPv4 configuration, PIX 515 conduits, frame relay PVC.

    Authored ROI and TCO contract justifications, and Perl training material.

  • Systems and Network Administrator

    Taos Mountain

    (Information Technology and Services industry)

    June 2000November 2001 (1 year 6 months)

  • Consultant

    The Princeton Review

    (Public Company; E-Learning industry)

    September 2001October 2001 (2 months)

  • Consultant

    OnMoney

    (Financial Services industry)

    October 2000September 2001 (1 year )

    OnMoney Financial Services

  • Consultant

    Ameritrade

    (Public Company; Financial Services industry)

    October 2000September 2001 (1 year )

    OnMoney Financial Services

  • Consultant

    Ameritrade Holding Corporation

    (Public Company; Financial Services industry)

    October 2000September 2001 (1 year )

    OnMoney Financial Services

  • Consultant

    UBO

    (Internet industry)

    September 2000October 2000 (2 months)

  • Consultant

    Urban Box Office

    (Internet industry)

    September 2000October 2000 (2 months)

  • Programmer Analyst

    Scripps Institution of Oceanography

    (Educational Institution; Research industry)

    May 1998June 2000 (2 years 2 months)

    Co-developed Atlas of Oceanographic Sections (Perl/NetCDF/POA; published 03/1999; PO.DAAC, NASA JPL).

  • Programmer Analyst

    UCSD

    (Educational Institution; Research industry)

    May 1998June 2000 (2 years 2 months)

  • Programmer Analyst

    SIO

    (Educational Institution; Research industry)

    May 1998June 2000 (2 years 2 months)

  • Programmer Analyst

    Scripps

    (Public Company; Research industry)

    May 1998June 2000 (2 years 2 months)

  • Specialist

    Sneaky Specialties

    (Information Technology and Services industry)

    January 2000January 2000 (1 month)

    netcat/hping2/firewalk/nmap network reconnaissance and fw/ids busting, Tripwire/aide, snort/sguil, netflow/sFlow analysis for anomaly detection, p0f, TCT/autopsy, nessus, Splunk/rsyslog, reverse SSH tunnel/https fw busting and mitigation, bpf/ngrep/ethereal/snoop/tcpreplay protocol analysis. Apache 1.1-2.2, mod_(rewrite|proxy|ssl), mpm_(worker|event); nginx; lighttpd; NCSA 1.4. MySQL 3.23-5.1 capacity planning, performance tuning, master-master replication; Oracle 8i-10g. BIND 4.8-9.5, djbdns; familiarity with DNSSEC and DNSCurve; Postfix, qmail, Sendmail. Veritas Cluster Server 1.1-1.3 (NFS, Apache agents), VxVM, VxFS; SVM/DiskSuite; LVM. Veritas NetBackup 3.4-6.0 (MS Exchange, SQL Server agents); Amanda. BEA WebLogic 6.0; Apache Jakarta/Tomcat 3.2-4.1; memcached. OpenIPMI, SMART, KVM/IP, LOM, iLO environmental and lights-out management. VMware Server/ESX; Citrix Xen; linux KVM; Amazon AWS, Elastic Load Balancing and Auto Scaling. SVN; RCS; Atlassian JIRA, Confluence; Socialtext, wikiCalc. Microsoft Active Directory/GPO, IIS 4/5, RIS unattended installs, MTS/COM+ package administration. Solaris 2.5.1-10; SunOS 4.1.4; FreeBSD 4.2-5.1; GNU/Linux 1.2-2.6; MacOS 7-10.5. Cisco 7200VXR, MSFC2/MSFC/RSM, 3400ME, 3600/2600, 2500. Cisco 6500/5500, 2960G, 3500XL/2900XL, 1900; HP Procurve 8000m/4000m. Cisco PIX 515, IOS CBAC; Juniper NetScreen ISG, 50, 5gt; netfilter, ipchains, ipf, ipfw; FW-1. Brocade/Foundry ServerIron GT, XL; Citrix NetScalar 9000; Radware WSD. Grandstream GXP2000, Linksys PAP2/ATA, Toshiba CTX PBX. IBM ISS Proventia GX5000, MX1000 IPS, RealSecure IDS. SNMP 1/2c, NetFlow 5, MRTG/RRDtool, cacti, remstats, ntop, argus, flow-tools, nagios/netsaint. EMC CLARiiON CX300, FC4500; HP MSA 1500; Sun A1000, D1000. Hitachi Data Systems Freedom 9900 and InRange FC/9000. ADIC Scalar 1000, Quantum SuperLoader, SpectraLogic TreeFrog. Perl 5, sh/bash/ksh/csh, Python 2, ANSI C/C++, SPARC and MIPS asm.

  • Web Developer

    LA Internet

    (Internet industry)

    June 1997September 1997 (4 months)

    - Natrol, Inc.
    - KTWV 94.7 "The Wave"
    - Paciolan Systems (now Ticketmaster)
    - Florist.com (now FTD)
    - California Paralyzed Veterans Association


Lyle Tagawa’s Education

  • University of California, San Diego

    BS , Computer Science; Area Studies: Visual Arts and Political Science , 19952000

    Network game analyzer: research project overseen by Evi Nemeth; analyzed CAIDA coral traces to determine workload characteristics and performance of network game traffic over the Internet (Perl/C/libpcap/bpf).

    Pre-emptive threads package: provided prioritized and round-robin processor scheduling, condition time-outs, and asynchronous I/O. Worked within a team of three by modularizing tasks and maintaining a consistent API.

    Research project overseen by Dr. Scott Baden; evaluated the Message Passing Interface (MPI) and Bulk Synchronous Parallel (BSP) APIs using several nodes of an SGI Cray Origin2000 located at NCSA.

    SPARC/Solaris RPCd buffer overflow: successfully exploited an unbounded memory copy in a RPC client/server package by overflowing the remote stack and overwriting a function return pointer to redirect its flow of execution to the injected code (C/gdb/asm/truss).

  • Ryman Arts

    19941995

    "I don't think of myself as just an artist or painter. I think of myself as a very curious observer and, fortunately, a lucid and graphic recorder" - Herbert D. Ryman

  • Westchester

    19911995

  • Conjunction Junction

    19881991

    Function: Hooking up words and phrases and clauses.


Additional Information

Lyle Tagawa’s Websites:

Lyle Tagawa’s Groups:

ISACA, USENIX, SAGE, ACM

  •    Certified Information Systems Auditor
  •    Certified Information Security Managers
  •    ISACA Professionals
  •    USENIX Association
  •    SAGE: The USENIX SIG for Sysadmins
  •    Electronic Frontier Foundation (EFF)

Lyle Tagawa’s Honors:

CISA, CCNA, SCSA, BCMSN


Lyle Tagawa’s Contact Settings

Interested In:

  • career opportunities
  • expertise requests
  • reference requests
  • getting back in touch

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