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Ian C. Blenke firstname.lastname@example.org http://ian.blenke.com PO Box 1046 Mango, FL 33550-1046 Cell: (813)784-6020 Objective My personal objective is to remain on the forefront of emerging software, data, and networking technologies. This includes keeping current in the OpenSource community, continually improving the state of the art in large-scale enterprise systems administration, and staying up to date with local and wide-area telephony. Work Experience April 2001 – Present: Senior Systems Engineer Networked Knowledge Systems Tampa, FL • Developed the FUSE based CORNFS distributed filesystem. • Wrote my own AJAXed Ruby on Rails blogging engine from the ground up. • Built and maintained hundreds of OpenSource packages for the management infrastructure of a 1000+ node Linux server farm. • Support and maintain a large installed Linux server base of managed services offering of Firewall, file server, VPN, and monitoring services running on hundreds of virtual User-Mode-Linux servers and physical edge devices. • Implemented VoIP infrastructure using SIP phones and Asterisk PBX software • Started the JSP SVG mapping project for OpenNMS January 1999 – April 2001: Platform Development Engineer 2nd Century Communications Tampa, FL • Originally hired early to this CLEC startup as a senior developer. Started the now 60+ node Solaris/Linux farm. Wrote C, Java, Perl, and Oracle PL/SQL. • Transferred to Engineering as a Platform Development Engineer after 6 months. • Developed numerous data products ranging from customer premise thin-server devices and web hosting to remote access and IPSEC VPN offerings. • Implemented Sun FT1800 based Terabridge Pathminder Softswitch platform. • We received various awards for helping to build the first of its kind SVC based Voice over ATM (VoATM) network. March 1996 - January 1999: Senior Unix Systems Administrator Intermedia Communications Inc. Tampa, FL • Quickly grew a small 8-machine Unix network into a 120-node Solaris/HP farm. • Built and managed the HPOV/Sybase based CascadeView servers used to manage Intermedia's national Frame Relay network. • As the lead Unix guru, managed a staff of up to 11 subordinate contractors installing hardware and building enterprise architecture. • Built and managed the IT test lab. Engineered and tested a variety of telecom cross-platform back-office systems. 1994-March 1996: CTO Tachyon Communications Corporation Melbourne, FL. • Co-founded an Internet Service Provider (ISP) in the Melbourne, FL area. • Installed, configured, maintained, and mastered various public domain UNIX and networking tools with an focus on lower-layer protocols and security issues. 1991-1994: Unix LAN Administrator Harris Corporation Melbourne, FL. Education 2002 University of South Florida. Tampa, Florida. • Bachelor of Science Computer Engineering (B.S.Cp.E), 3.1 GPA Acquired Knowledge TCP/IP v4 and v6 internetworking. • Routing: BGP4, OSPF, IGRP/EIGRP, and basic RIP II. • Firewalling and packet filtering: mastery of CheckPoint Firewall1, TIS Gauntlet, Cisco IOS ACLs, Linux ipfwadm/ipchains/iptables, and OpenBSD/Solaris ipfilter. • Network Address Translation (NAT): extensive experience with static/dynamic NAT/PAT and various IP helpers, IP load balancing (LVS and F5’s BigIP line). • VPN tunneling: PPTP, PPP over L2TP, IPSEC (extensive 2.4/2.6 KLIPS FreeSwan/OpenSwan and 2.6 KAME / BSD Racoon), Shiva VPN, PGPnet, SSH, OpenVPN, Tinc, numerous others. Networking equipment experience: • Routers/Switches/IADs: Cisco (from early IOS 9.x on AGS+ through to IOS 12.x on 7200s), RedBack, Ascend MAX/TNT/Pipeline (and 'core' Cascade 4000/6000 switches), Bay Networks, Alcatel 7470 (Newbridge 36170), ASC RBOX, Vina MX, 3com, Fore (Marconi), Xyplex, Livingston, Xylan, HP switches, D-Link, Linksys • Experience with Ethernet 802.3[u,z/ab], 802.1[pq], ATM LANE, MPOA, and MPLS as well as vanilla RFC1483 PVCs. Telephony: • Unified ATM and TDM based telephony and data networks. • Signaling: ALTA spec Q.2931 VoATM, SS7, Megaco/MGCP, and SIP. • Transport: experience with VoIP and RTP/RTSP streaming media using SIP and MGCP (Asterisk PBX) as well as H.323 media gateways (primarily OpenH323/GnuGK and VOCAL). Wireless: • Active interest in data wireless technologies, including daily experience with 802.11a/b/g WEP/WPA/WPA2 wireless security and penetration testing. • Experience with various WDS meshed 802.11b/g networks, including Linux HostAP, Mad WiFi, and broadcom reference firmware (Linksys GPL, Sveasoft, DD-WRT, OpenWRT) • Extensive self-study in 2.4Ghz and 5.8Ghz technologies including Bluetooth, 2.5G & 3G W/CDMA UMTS and CDMA2000 (1xRTT/EVDO) wireless, MMDS, and higher with LMDS. Operating Systems: • Unix: expert with most flavors, including but not limited to SunOS 4.1.x, Solaris 2.1-2.8 (Solaris8), SGI IRIX 6.5, HP/UX 10.x/11.x, AIX, a few other pure SVR4 variants, and various BSD 4.4lite derivatives such as OpenBSD/NetBSD/FreeBSD. • Linux: mastery of Linux from early 0.96plX kernels through to 2.6.14 today. Started with the floppy based SLS distribution in 1993 (now Slackware), and now routinely work in any one of a number of Linux distributions: Debian based (from Potato through to Sarge today with various Sid backports, Knoppix, Corel/Xandros, Storm, Progeny, and Libranet), RedHat based (from 4.x through to 7.2, Mandrake, S.u.S.e, and Lycorix), Gentoo, as well as various others. • DOS: extensive real-mode (DOS 3.1-6.22) experience since early PC-XT • Windows: have developed in win16/win32 and wrote WSANet, an early Winsock VBX System administration • Configuration Management: rsync and a homegrown Make based system similar to ISConf. Some cfengine. Currently contributing to Luke Kanies' Puppet. • DNS: BIND 4.x/8.x,/9.x, and Microsoft Win2k DDNS<>ADS integration • DHCP: ISC DHCP v2/v3, Microsoft NT/Win2k DHCP, PXE network booting (Microsoft RIS, BPBatch, PXELinux, etc) • Backups: Dirvish (rsync), Legato Networker, Veritas NetBackup, AMANDA, HP OmniBack II, dump • File sharing: NFS v1/v2/v3 (Sun, Linux knfsd, Reflection NFS, Microsoft Services for Unix 2.0, etc), various SMB stacks (Win98, WinNT, Win2k, Samba, Syntax Totalnet), and, as well as some AFS, CODA, and GFS/GNBD. • Network “thin-client” protocols: X11, Citrix ICA, RDP (Microsoft TSE), RFB (VNC) • RPC: Sun ONC RPC, DCE RPC, XML-RPC/SOAP, Corba IIOP, DRb • Authentication: Kerberos v4/v5, RADIUS, TACACS/TACACS+, ERPCD, NIS (yp), NIS+, PPP PAP/CHAP/MSCHAP, SSH, PGP/GPG, PKI (X.509) • Printing: SysV lp, BSD lpr, LPRng, PDQ, CUPS, Windows SMB based printing, Ghostscript, enscript. • Email: sendmail, postfix, smail, qmail, procmail, majordomo, mailman, Microsoft Exchange, Lotus Notes • Monitoring: HP OpenView, Netcool Omnibus, NetSaint, OpenNMS, Big Brother. • Volume management: HP-UX, SGI, and Veritas Logical Volume Managers. Solaris DiskSuite (ODS), Linux md. LVM, and EVMS (specifically with XFS and Reiserfs) • Clustering: Sun Clustering, Veritas Clustering, Oracle Parallel Server, Microsoft clustering, Linux Mosix and Beowulf. Actively use OpenGFS on firewire for hosting all blenke.com virtual servers on a two node Linux cluster. • Hardware: Sun 3/60 through E4500, Sun FT1800 Fault Tolerant Servers, and OEMed Sun AXi and AXmp based clones, HP: 715, C, D, K, and N class. All PC architectures from 8086 through to AMD K8 and Intel P4. • NAS: Network Appliance F740 and F760. SAN: early Sun Sparc Storage Arrays, newer Sun arrays (A1000, D1000, A5000), MTI Gladiator Fibre-channel disk arrays, EMC Symmetrix, arbitrated loop and switched fabric environments. Also, iSCSI, Hyperscsi, and ATA over Ethernet Development background • Assembler languages: 6502, 80x86, 68000, and IBM 370 assembler • Development languages: Strong C ability, Java, C++, Pascal, and Forth. • OpenSource environments: (GNU tools: gcc, autoconf, rcs, cvs, svn), GNOME (GTK+), KDE (Trolltech Qt) • Scripting language: Perl, Ruby, Python, sh/ksh/csh/bash/tcsh shell programming, TCL/TK and expect, DOS .bat and NT .cmd scripting, VBS/VBA COM automation • Web development: Ruby on Rails, PHP3/4, CGI, mod_perl, Zope, ASP, ISAPI, ColdFusion, and Oracle's OAS (PL/SQL) • Windows/DOS development: DOS real mode, Win16/Win32, VBX, COM+/ActiveX • Handheld development: PalmOS, WindowsCE, Linux. • Relational Database development: Postgres 7/8, MySQL 4/5, Oracle 7.3.4 and 8i, MSSQL 7.0, Sybase 4.9.2 and 11, Informix, IBM DB2. • XML/XSL development: Expat, Perl XMLParse, Ruby REXML Hobbies and Interests My primary full-time hobbies are also my profession. To that end, I am currently striving to document the things I work on in my personal blog. When I'm not working, I'm playing with new software and chatting with other authors on OpenProjects.net.
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