IT-Skills:

• since 1996 Oracle DB and Oracle Applications Operating.
• since 1996 Cisco administration
• since 1994 Unix system administration
• since 1990 Network administration with IP/IPX/Appletalk
• since 1985 Desktop support (for PC and Mac)
• for 6 years lecturer at a VHS for introductionary courses and Office Applications

Networking:

• Structured cabling and 19" Applications (Electronics degree!)
• Good knowledge of nearly all important TCP/IP Protocols (e.g. Wins, Dhcp, SMB, SNMP / RMON, more: see Internet)
• Good knowledge in the area IP- and AppleTalk Routing although not of advanced dynamical Routing (bgp, egp, ospf)
• Cisco Switches of the 2900/3500/4000 Line and Routers of the 700,800,1000,1600,2600 und 4500 Series. Setup of VLANs, EtherChannel, ISDN Dialups, Frame relay, Synchronous Serial, AppleTalk, IP Routing and Access lists (Filtering / Firewalling).
• Hubs and Switches from 3Com. Routers from 3Com, Ascend/Lucent, Elsa, and others provided from ISPs.
• Firewalling with Application-Level Gateways based on BSD and Linux (using TIS fwtk). Screening-Routers and Packetfilters based on Cisco routers (not PIX) and FreeBSD.
• VPN setup with FreeBSD by way of IP-Sec and an IP-Tunnel. VPN with the W2K Server included solution (VPN-RAS).
• Network- and Systemmonitoring based on SNMP, mainly with MRTG and self-written Perl-Scripts, but also with tkined (kind of a Freeware-"Openview").
• Implementation of a satellite-based WAN Link to India with Gilat. We had the Satellite-Antenna in-house, coupled to a Cisco via V.35 serial link. Intensive error tracking with the Indian side due to transmission problems and connection losses.
• Wan-Link simulator based on the FreeBSD-"Dummynet" interfaces. One can simulate packet-loss and adjust delay and bandwidth.
• PPP: All kinds of PPP connections via Cisco ISDN-Router, 3Com RAS-Router, NT4-RAS, W2K, MacOS, Isdn4BSD, KA9Q, etc..
• And SLIP via MacOs and A/UX.

Internet and IP Protocols:

• Since 1991 own, private Internet email-address.
• Since 1993 private direct Internetaccess.
• 1994 I brought Internet-access to the VHS Metzingen, being the first VHS in Baden-Württemberg having full Internet-access in the classrooms.
• Since 1995 I run Internet-Servers and -Domains.
• Since 1995 I have my own Domain: koerner.de

• DNS: Very good knowledge of bind, NT 4 DNS.
• SMTP: very good knowledge in Sendmail. Good knowledge of majordomo, MS Exchange, NAI WebShield, Symantec Antivirus for SMTP-Gateways.
• UUCP: HDB and Taylor UUCP via Modem and IP.
• POP3 & IMAP: MS Exchange, Cyrus IMAP Server (Freeware), Qualcom qpopper.
• NNTP: inn, Exchange.
• HTTP: Good knowledge in Apache. Basic knowledge of MS IIS4 and Oracle Web-Server 3.
• Proxies: Squid, Apache, TIS, rtsp proxy.
• LDAP: some exposure to OpenLDAP.
• Firewalls: FreeBSD and Linux with TIS fwtk. Complete DMZ Setups.
• Others: NTP, ssh, SNMPv1, ftp, wins, dhcp, bootp, X11, lpd, telnet, vnc

Filesharing:

• SMB: Good knowledge of Samba, NT 3.5 - W2K, Helios PC-Share.
• AFP: Good knowledge of netatalk, Helios Ethershare, A/UX Fileserver, Appleshare Server 2 & 3.
• NFS: Experience on Solaris, FreeBSD, A/UX.

Operating Systems:

• Unix: User since 1992. Very good knowledge in Solaris, FreeBSD, A/UX, Linux.
• Novell: from 1989 to 1996 Versions 2.2 up to 4.0
• MS: Everything since 1984 (Dos 3.0) up to W2K.
• Apple: Everything since 1987 (MacOs 6.x)

Unix-Software and Hardware

• Veritas: Very good knowledge in Volume Manager, NetBackup. Good knowledge in Cluster Server. Basic knowledge in Veritas Filesystem.
• Sun Solstice Disksuite
• Oracle 7 Installation, Operating, Backup (and Restore) and Maintenance.
• Oracle Applications GL, AP, AR, PO, HR: Installation and upgrade of Releases 10.5 up to 10.7 NCA. System administration, troubleshooting.
• Sybase Adaptive Server Enterprise 11.7 to 12.5.
• QuarkDMS
• All kinds of OpenSource from gcc, the Gnu-tools, up to Apache, inn, hylafax, procmail, mailman, ids, etc...
• Suns from SparcServer 20, SparcServer 1000, E450, E3000, E4000 up to Starfire V880 in largest configuration. Sun SSA112 and A1000. Digital Alpha Servers and Workstations running NT 4 and FreeBSD. Supermicro Quad-Xeons with Linux and FreeBSD. Raids from Infortrend and Integrix. Digital Storageworks and EMC Clariion FC raids.

MS-Software and Software for MS-Systems

• The complete range of NT 4 Server based Services in a global environment (Trusts, Wins-Replication, Wan-Printing etc...)
• The complete range of MS-Office Software as a user. No extensive customizing or VBA programming.
• MS Sql-Server 6 and 7 installation and operating. Backup and recovery.
• MS-Exchange 5.5 with global replication of adressbooks and Public-Folders. Virusprotection from NAI and Symantec.
• Message-Queue, Transaction Server, ADO, DCOM etc...
• All kinds of Applications from e.g. Quark, Adobe, Oracle, Autodesk.
• AV-Tools from Symantec and NAI.

Programming Languages

• Perl: Good. Regular use (e.g. bigger Perl-Modules for Oracle and Netbackup).
• Bourne-Shell: Yes, but complex scripts only in Perl!
• Basic C-Knowledge from the University.
• Not used for years now, but then ago quite intense: (Turbo-) Pascal, Modula-2, 68K-Assembler.

Others:

• Basic knowledge in Electronic Publishing.
• Broad Hardware- and Electronics Know-How (Degree in electronics!).
• Good basic Microcontroller knowledge, especially 68K.
• Lots of experience in Training End-Users and Know-How transfer to collegues.
• Deep knowledge in the area of general technical Infrastructure Planning for Office-Buildings. Handling of the setup and removal of operational Equipment for entire Locations. Including transfer of Materials and the according Paperwork (Customs, Shipping, Pro-Forma Invoices, Export permits, etc...).

Trainings received:

• 2004: Sybase: System and Database Administration: Adaptive Server Enterprise.
• 2001: Veritas: Veritas Cluster Server 1.3 for Solaris Basic & Advanced Course.
• 1999: Oracle: Compactcourse Oracle 8 Databaseadministration plus Backup and Recovery Workshop.
• 1997: Telemation: Cisco Routing ISDN and Frame-Relay.

Foreign Languages

• Technical English and easy conversations fluent.
• Very basic french (holiday-style !)

Created 2003-02-26. Last Modification 2004-06-13.