Veröffentlichungen / Publications

Neueste zuerst / Latest first

2025:

• AI HowTo: ``ghidraMCP & Windsurf'' (June 2025, english language, 1250 words)

• Guest-lecture ``Capture The Flag - Eine Einführung in praktische Cybersecurity Übungen'', Vorlesung "Cybersicherheitsplanspiele" von Prof. Dr. Maria Leitner, Lehrstuhl für KI in der IT-Security, Fakultät für Informatik & Data Science, Universität Regensburg, Regensburg (June 2025, german language, 43 slides)

• Presentation: ``Geocaching für Fortgeschrittene und ambitionierte Anfänger'' at ``BOCK auf BLOCK'' (GCAK560) Geocaching Blockparty, Amberg (March 2025, german language, 32 slides)

2024:

• Presentation: ``CTF: WTF?! Capture The Flag für Einsteiger'' (program entry, slides, recording on media.ccc.de/YouTube). In: 38th Chaos Communications Congress 27.-29. December 2024 in Hamburg, Germany, (December 2024, german language, 34 slides)

• Presentation: ``Hirne Lüften für Hacker - eine Geocaching Einführung'' at the 21st Easterhegg at OTH Regensburg, Germany. (March 2024, german language, 30 slides / 56min recording)

2023:

• Online article: ``Writeup on TryHackMe's Advent of Cyber 2023 with a focus on Side Quests'' (January 2024, english language, 8700 words)

2022:

• Calendar entry: ``Mauerdurchbruch'', in: Lost Place Kalender 2023, Geocaching Magazin. (December 2022, german language, 1 picture DIN A3)

• Article: ``ibug - Industriebrachenumgestaltung, oder: Das Bunte muss ins Dreckige'', Rucksackabentuer-Magazin 6/2022, pages 14-17 (June 2022, german language, 4 pages)

2021:

• Calendar entry: ``Jugendstilbad in Bayern'', in: Lost Place Kalender 2022, Geocaching Magazin. (December 2021, german language, 1 picture DIN A3)

2018:

• Article: ``Was ist Informationssicherheit?'' (local copy), published in: Magdeburger Journal zur Sicherheitsforschung, Ausgabe 15, Jahrgang 8, Band 1 (2018), ISSN 2192-4260. (Written July 2016 / published February 2018, german language, 8 pages)

2017:

• Interview : ``Unix Blog Presentation: hubertf's NetBSD Blog'' (local copy). Published in BSD Magazine Vol. 11 No. 03, Issue 03/2017 (91), pages 44-48, ISSN 1898-9144. (March 2017, english language, 5 pages)

• Article: ``HowTo: Listen aus der alten "Classic" Geocaching App von Groundspeak für iOS exportieren''. Online-publication on www.feyrer.de. (February 2017, german language, 2.100 words)

2016:

• Article: ``HowTo: Per Volkswagen-CarNet zum Geocaching-Cachemobile - Vom Geocaching Pocket Query über Volkswagen-CarNet auf's Navi.'' Online-publication on www.feyrer.de. (June 2016, german language, 2.800 words)

2013:

• Presentation ``Ansible & Amazon EC2 - Orchestrating NetBSD into the Cloud'' (web slides, PDF slides) held on March 23rd 2013 at pkgsrcCon 2013 in Berlin, Germany. (March 2013, english language, 45 slides)

2012:

• Presentation ``Eine DIN-Norm für IT-Sicherheit - Gesetze und Normen für Cybersecurity''. Held at the 1st Magdeburger Sicherheitsforum 2012 at Elbelandhaus Magdeburg, Germany (October 2012, german language, 19 slides)

• Article ``Eine DIN für IT-Sicherheit?'' (local copy), published in: ``Informationstechnologie und Sicherheitspolitik - Wird der dritte Weltkrieg im Internet ausgetragen?'' by Jörg Sambleben and Stefan Schumacher in BOD Books-on-Demand Verlag, Norderstedt, Germany, 2012. ISBN 978-3-8482-3270-3. (October 2012, german language, 21 pages)

• Article ``Sicherheit durch Freiheit und Offenheit? - Ein Fallbeispiel?'' (local copy), published in: ``Informationstechnologie und Sicherheitspolitik - Wird der dritte Weltkrieg im Internet ausgetragen?'' by Jörg Sambleben and Stefan Schumacher in BOD Books-on-Demand Verlag, Norderstedt, Germany, 2012. ISBN 978-3-8482-3270-3. (August 2012, german language, 17 pages)

• ``NetBSD in der Cloud'', FreeX 5/2012, pages 58-63. (April 2012, german language, 6 pages)

• ``SPT - das Simple Phishing Toolkit'', FreeX 3-4/2012, pages 36-41. (January 2012, german language, 6 pages)

• ``Open Source für Asset- und Change Management'', FreeX 2/2012, pages 40-51. (January 2012, german language, 11 pages)

2011:

• ``IT-Security mit Open Source'', FreeX 1/2012, pages 6-13. (December 2011, german language, 8 pages)

• Essay ``Über den Umgang mit Unsicherheit'', in: Magdeburger Journal zur Sicherheitsforschung, Bd. 1-1-1, 2011, Nr. 1, Seiten 72-84. (July 2011, german language, 12 pages)

2010:

• Article: ``Wiederholendes Wartungsfenster mit Nagios'', FreeX 6/2010, pages 92-93. (November 2010, german language, 2 pages)

2008:

• PhD Thesis: ``System Administration Training in the Virtual Unix Lab - An e-learning system with diagnosis via a domain specific language as base for an architecture for tutorial assistance and user adaption''. Shaker Verlag GmbH, Aachen, Germany, 2009. ISBN 978-3-8322-7874-8. Also available for online purchase and as permitted local copy (December 2008, english language, 420 pages)

2007:

• Technical Report of the Virtual Unix Project: ``Impact of the Virtual Unix Lab: Evaluation of end-of-semester paper tests'', published on OPUS (December 2007, english language, 71 pages)

• Technical Report of the Virtual Unix Project: ``Implementing exercise result verification for the Virtual Unix Lab'', published on OPUS (December 2007, english language, 89 pages)

• Technical Report of the Virtual Unix Project: ``Education of System Administration'', published on OPUS (December 2007, english language, 39 pages)

• Presentation ``Vom Dach bis in den Keller - Statusbericht NetBSD''. Held during the Linuxtag 2007 at the Messegelände unter dem Funkturm, Berlin, Germany. (June 2007, english language, 34 slides)

• Presentation given with Stefan Schumacher: ``Portable Software-Installation on Linux, Solaris & NetBSD with pkgsrc'', co-authored with D'Arcy J. M. Cain. Held during the Linuxtag 2007 at the Messegelände unter dem Funkturm, Berlin, Germany. (June 2007, german language, 34 slides)

• Presentation: ``DynDNS für Strato-Domains im Eigenbau''. Held at the Chemnitzer Linuxtage 2007 at the Technical University of Chemnitz, Germany. (March 2007, german language, 27 slides)

• Article: ``Die Subdomain zuhause - Sicherer DynDNS-Updates mit STRATO-gehosteten Domains'', FreeX 2/2007, pages 38-43. (February 2007, german language, 6 pages)

• Co-authored with Stefan Schumacher and Mark Weinem. ``NetBSD - Das portabelste Betriebssystem der Welt'', pages 315--326. In: Bernd Lutterbeck, Matthias Bärwolff, Robert A. Gehring (Hrsg.): Open Source Jahrbuch 2007. Lehmanns Media Verlag, Berlin. ISBN 978-3-86541-191-4 (January 2007, german language, 13 pages)

2006:

• Presentation and live demo ``Beispielinstallation: NetBSD in qemu''. Held at the Chemnitzer Linuxtage 2006 at the Technical University of Chemnitz, Germany. (March 2006, german language, 10 slides)

2005:

• Presentation ``Introducing the Virtual Unix Lab'' with its aspects of Computer Science and Information Science during lunch talk of the Secure Systems group Nov 2005 at Stevens Institute of Technology in Hoboken, NJ, USA. (Nov 2005, english language, 23 slides)

• Article: ``VND gut komprimiert'', co-authored with Florian Stöhr. FreeX 6/2005, pages 71-75. (June 2005, german language 5 pages)

• Presentation ``Das Virtuelle Unix-Labor - Statusbericht SS2005'' covering more details on result verification, and evaluation of results of the Virtual Unix Lab. Held at the seminar ``Neue Entwicklungen in der Informationswissenschaft'' at the University of Regensburg, visited in summer-term 2005. (April 2005, german language, 45 slides)

• Presentation: "Didaktik der Systemadministration" held at the Chemnitzer Linuxtage at the Technical University of Chemnitz, Germany. (March 2005, german language, 31 slides)

• Presentation: "Didaktik & Systemadministration", BOF session held at the spring talk (Frühjahrsfachgespräch) of the German Unix User Group in Munich, Germany. (February 2005, german language, 16 pages and 27 slides)

• Article: "Didaktik der Systemadministration", in: Uptimes -- Mitgliedszeitschrift der German Unix User Group (GUUG) e.V., Februar 2005, pages 6--15. GUUG e.V. Verlag, Köln. (February 2005, german language, 16 pages)

• Article: "Didaktik der Systemadministration", in: GUUG Frühjahrsfachgespräch 2005 Proceedings, pages 323--338. GUUG e.V. Verlag, Köln. ISBN 3-86541-085-5. (February 2005, german language, 16 pages)

• Presentation: ``IPv6 an der FH Regensburg'', held in Feb 2005 at the Bayrische Hochschul-Netz (BHN) Meeting at FH Regensburg. (February 2005, german language, 16 slides)

2004:

• Presentation: ``Das Virtuelle Unix-Labor - Statusbericht WS04/05'' covering an introduction of the Virtual Unix Lab, didactics of system administration and result verification. Held at the seminar ``Neue Entwicklungen in der Informationswissenschaft'' at the University of Regensburg, visited in winter-term 2004/05. (January 2005, german language, 56 slides)

• Presentation: ``Easy Software Installation on Linux, Solaris, NetBSD etc. using pkgsrc'' (slides, paper). In: Proceedings of the 21st Chaos Communications Congress 27.-29. December 2004 in Berlin, Germany, pages 197--203. Art d'Ameublement, Bielefeld, Germany. (December 2004, german language, 34 slides, 10 pages)

• Presentation: ``GPL für Anfänger'' (slides, paper, recording). In: Proceedings of the 21st Chaos Communications Congress (21c3) 27.-29. December 2004 in Berlin, Germany, pages 191--196. Art d'Ameublement, Bielefeld, Germany. (December 2004, german language, 40 slides, 6 pages)

• Presentation ``Geistiges Eigentum: Schutz durch Software-Lizenzen'' for the course ``Informationsethik'' at the department of Information Science (Informationswissenschaft) at Uni Regensburg, visited in winter-term 2004/05. (November 2004, german language, 39 slides)

• Presentation: ``An Introduction to Sysadmin Training in the Virtual Unix Lab'' (paper). Presented at the European BSD Conference 2004 on Oct. 31st, 2004, in Karlsruhe, Germany. In: Proceedings of the EuroBSDCon 2004, punkt.de Verlag, Karlsruhe, Germany, pages 109-140.

• Article: ``Open-Source based access to Cisco VPNs -- using vpnc on NetBSD and Linux'', published in DaemonNews, September 2004 issue (September 2004, english language, 1100 words)

• Presentation ``Sysadmin Training in the Virtual Unix Lab'' (PDF and slideshow), given at the 2nd Swiss Unix Conference, Sept. 2-4 in Zürich, Switzerland. (September 2004, 37 slides, english language)

• Presentation: NetBSD Status Report Summer/Fall 2004, given at the 2nd Swiss Unix Conference, Sept. 2-4 in Zürich, Switzerland. (September 2004, 37 slides, english language)

• Presentation slides and paper for the course "Information - Philosophische und informationswissenschaftliche Perspektiven" at the department of Information Science (Informationswissenschaft) at Uni Regensburg, visited in summer-term 2004. (July 2004, german language, 26 slides and August 2004, german language, 14 pages).

• Presentation slides and paper on ``Quenya Syntax I: Verbalphrasen'' for the course "Informationslinguistik" at the department of Information Science (Informationswissenschaft) at Uni Regensburg, visited in summer-term 2004, together with Claudia Henghuber. (May 2004, german language, 71 slides and July 2004, german language, 31 pages).

• Article: ``Report of pkgsrcCon 2004'', published in DaemonNews, May 2004 issue (May 2004, english language, 1200 words)

• Presentation: ``Easy Software-Installation on Linux, Solaris and NetBSD using pkgsrc'' - presentation held in May 2004 at the 1st pkgsrcCon in Vienna, Austria. (April 2004, english language, 34 slides).

2003:

• Co-authoring of the presentation ``NetBSD 2003 -- NetBSD 2004'' at the spring talks (Frühjahrsfachgespräch) of the German Unix User Group, together with Ignatios Souvatzis. (February 2004, german language, 9 pages).

• Documantation: Technische Dokumentation zum Sun-Pool 511 und zu den WAP-Sun-Workstations (October 2003, german language, 361 pages)

• Presentation: ``Einfache Software-Installation auf Linux, Solaris, NetBSD, etc. mit pkgsrc'' - introductory presentation of pkgsrc held in Mar 2004 at the 6th Chemnitz Linuxtag. (Mar 2003, german language, 31 slides).

• Presentation: ``Das NetBSD Projekt - Statusbericht'' - presentation held in Dec 2003 at the 20th Chaos Communication Congress in Berlin. (Dec 2003, german language, 27 slides)

• Article: ``Non-Proprietärer VPN-Zugang für NetBSD und Linux zum VPN der Uni Regensburg'' (November 2003, german language, 800 words)

2002:

• Presentation: ``NetBSD Status Report'' - presentation held in Dec 2002 at the 19th Chaos Communications Congress (19C3) in Berlin. (Dec 2002, german language)

• Presentation: ``Clustering the NetBSD Operating System for Video Rendering'' - presentation held in Dec 2002 at the 19th Chaos Communications Congress (19C3) in Berlin. (Dec 2002, german language)

• Presentation: ``Rapid Deployment von IPv6 mit 6to4'' - presentation held in Dec 2002 at the 19th Chaos Communications Congress (19C3) in Berlin. (Dec 2002, german language)

• Article: ``Cross-Development with NetBSD - Using NetBSD's new toolchain to develop for an embedded device'', published in DaemonNews, November 2002 issue (October 2002, english language, 1300 words)

• Presentation: ``NetBSD - An Operating System (not only) for Clusters and Embedded Applications'', presentation held in Oct 2002 at the Linuxday in Luxembourg (October 2002, english language, 18 slides)

• Presentation: ``Reaching the Goal with the Regensburg Marathon-Cluster - A NetBSD Cluster Project'' - presentation held in Oct 2002 at the Linuxday in Luxembourg City, Luxembourg, and in Nov 2002 at the EuroBSD Con in Amsterdam, Netherlands: paper (September 2002, english language, 17 pages), presentation (October 2002, english language, 32 slides)

• Presentation: ``Der Regensburger Marathon-Cluster - Informationswissenschaftliche Darstellung''; Course "Information Retrieval" at department of Information Science (Informationswissenschaften) at Uni Regensburg, visited in summer-term 2002: paper (July 2002, german language, 18 pages) presentation slides (July 2002, german language , 36 pages)

• Open Source Hackers' Guide Through The Galaxy: A Tour through the NetBSD Source Tree, Part I - III; published in march 2002 ("Userland", english language, 2800 words), april 2002 ("Libraries", english language, 2100 words) and may 2002 ("Kernel", english language, 2900 words) issues of DaemonNews magazine

2001:

• NetBSD in 2001 report, published in January 2002 issue of DaemonNews magazine (Janyary 2002, english language, 2300 words)

• Testdriving -current, published in January 2002 issue of DaemonNews magazine (September 2001, english language, 900 words)

• Operation am offenen Herz - Wie schließt man eine USV im laufenden Betrieb an?, co-authored with Marius Strobl; published in Troja 26 of the Troja students' paper and Datenschleuder #77 (ISSN 0930-1054) of the Chaos Computer Club (Nov 2001, german language, 2100 words)

• Netz/EDV-Aktivitäten im Wintersemester 2001/2002 (November 2001, german language, 1100 words)

• IPv6 - Das neue Internet-Protokoll: Rapid Deployment von IPv6 mit 6to4 for Managerakademie Ueberreuter's "IPv6 - Das neue Internet-Protokoll" conference Sep 19/20th 2001 in Bonn, Germany (cancelled) (September 2001, german language, 2700 words)
• IPv6 - Das neue Internet-Protokoll: IPv6 & BSD for Managerakademie Ueberreuter's "IPv6 - Das neue Internet-Protokoll" conference Sep 19/20th 2001 in Bonn, Germany (cancelled) (September 2001, german language, 400 words)

• Running BIND9 in a chroot cage, published in October issue of DaemonNews magazine (Sep 2001, english language, 1800 words)

• NetBSD 1.5.1, published a few days before the 1.5.1 release in July issue of DaemonNews (June 2001, english language, 1100 words)

• Getting Connected with 6to4, published on June 1st on O'Reilly's OnLAMP.com (May 2001, english language, 3000 words)

• Mit dem Regensburger Marathon-Cluster durch's Ziel (May 2001, german language, 3900 words)
• Reaching the Goal with the Regensburg Marathon-Cluster, with more than 7.200 hits one day after this was on slashdot (May 2001, english language, 400 words)

• Introduction to IPv6, published on May 25th on O'Reilly's OnLAMP.com (May 2001, english language, 3100 words)

• A Tour through the NetBSD Documentation, four parts. Part I published in April issue of DaemonNews magazine (Apr 2001, english language, 1100 words), part II published in May issue of DaemonNews magazine (Apr 2001, english language, 900 words), part III published in June issue of DaemonNews magazine (Apr 2001, english language, 1400 words), part IV published in July issue of DaemonNews magazine (Apr 2001, english language, 1200 words) .

• Happy Birthday, Tabaluga!, published in Troja 25 (Mar 2001, german language, 500 words)

• TTYs and X Windows - Unix User Interaction now and then - An Introduction of Concepts for Novice Users, published on Mar 24th 2001 on O'Reilly's ONlamp.com (Feb 2001, english language, 3900 words) (With more than 5400 hits after one week, this was among the Top 3 articles on the O'Reilly Network)

• Interview with Jun-ichiro "Itojun" Hagino about the KAME Project, published on Mar 4th 2001 on O'Reilly's ONlamp.com (Feb 2001, english language, 2800 words)

• Presentation Konzept und Setup eines 6to4 Gateways an der FH Regensburg at the 34th operations meeting of the german educational network (DFN), Feb 6th 2001 in Berlin. (Feb 2001, 20 pages, german language)

• Network Flight Instructions, Part I ("Digital Subscriber Line - Overview and Configuration") & II ("Internet gateway configuration and basic online security rules"), published (part I/II) on BSDtoday (Jan 2001, english language, 1000 & 1100 words)

2000:

• Insights on Open Source Release Engineering, or: How NetBSD 1.5 Was Born, published in DaemonNews, Jan 2001 issue (Dec 2000, english language, 2400 words)

• 6to4 IPv6 Explained, or: Flogging a Dead Horse, published in DaemonNews, Jan 2001 issue and linked on the 6Bone 6to4-page (Dec 2000, english language, 950 words)

• What's New and Exciting in NetBSD 1.5?, published in DaemonNews, Dec 2000 issue (Nov 2000, english language, 2300 words)

• What Makes An Operating System "Portable"?, published in DaemonNews, Aug 2000 issue (Aug 2000, english language, 4 pages/1700 words)

• The procfs hole and how it was fixed in NetBSD, published in DaemonNews, May 2000 issue (Apr 2000, english language, 1300 words)

• Ext2fs rev 1 changes in NetBSD, co-authored with Manuel Bouyer and published in DaemonNews, June 2000 issue (Apr 2000, english language, 1100 words)

• Implementing Wildcards for the NetBSD Packages System (Jan 2000, english language, 1400 words); japanese translation available.

1998:

• PC-Installation: Unattended-Setup Windows NT 4.0 Workstation und NetBSD/i386 V1.3.2 (Sep 1998, german language, 46 pages)

• Dokumentation zum Setup des Domain-Nameservers der Fachhochschule Regensburg (Feb 1998, german language, 27 pages)

• MeDoc: Experiences in Document Conversions performed during the MeDoc Project; Published in shortened form in issue 1392 of Lecture Notes in Computer Science by Springer-Verlag: Barth, Breu, Endres, de Kemp - Digital Libraries in Computer Science, Springer-Verlag, Germany, 1998. ISBN 3-540-64493-8 (Mar 1998, english language, 44 pages)

1997:

• Documentation on SGI-Setup at the 39th IETF meeting 1997 in Munich (Aug 1997, english language, 2 pages)

• The "NetBSD/amiga Beginner's Guide to TCP/IP Networking and Networking-FAQ", 2nd Edition (Jan 1997, english language, 46 pages)

1996:

• MeDoc Buchkonvertierungen - Probleme und Empfehlungen (Dec 1996, german language, 1 page)

• Frequently Asked Questions about NetBSD/amiga (Apr 1996, english language, 40 pages)

• MeDoc: Setup of the Harvest Broker for the Technical Report Server of the FH Regensburg (Mar 1996, english language, 7 pages)

• MeDoc: Struktur des Technical Report Servers der FH Regensburg (Mar 1996, german language, 4 pages)

• MeDoc: Evaluierung OpenText (Feb 1996, german language, 14 pages)

• Implementierung einer sicheren IP-Verbindung in einem IP-basierendem Netzwerk, basierend auf einer Diskussion im IRC. (Jan 1996, german language, 3 pages)

1995:

• Erstellung von CD-Images mittels mkisofs (1995, german language, 2 pages)

• Diplomarbeit: Implementierung eines MailGateways zur Anbindung PC-basierender Systeme an das Interne (April 1995, german language, 119 pages)

1993:

• Bericht im zweiten praktischen Studiensemester (Jul 1993, german language, 90 pages)

• Starters Guide für NetNews an der Uni Regensburg (Jul 1993, german language, 34 pages)

• IRC - Eine Einführung (Jul 1993, german language, 22 pages)

• Elm - Aliases, Folders und Filters (Jul 1993, german language, 20 pages)

1992:

• Praktikumsbericht und Vortragsunterlagen zum ersten praktischen Studiensemester mit dem Hauptthema "Erstellen eines Data Dictionarys aus den Assembler-Sourcen-Codes der MS-Macros des IMOS-PPS-Paketes" (Jan 1992, german language, 51 and 16 pages)