security | Tero Karvinen

Penetration Testing Course – ict4tn027-3001 – Autumn 2018 – period 1 – 5 op

Posted on March 12, 2018 by Tero Karvinen

Update: The first course got excellent feedback: 4.9 out of five. Thank you! We have a new course starting on 2019 w21 Monday. I will teach the new penetration testing course. Name: Penetration Testing – Tunkeutumistestaus Code: ict4tn027-1 Teaching language: … Continue reading →

Posted in Uncategorized | Tagged course, db_nmap, exploit, haaga-helia, Helsinki, Kali Linux, kurssi, laboratorio, labra, Metasploit, meterpreter, murtautuminen, nikto, nmap, OWASP 10, OWASP Zap, Pasila, penetration testing, pentest, RDP, security, ssh, tietoturva-auditointi, tunkeutumistestaus, vega | 110 Comments

Automaticaly Build Penetration Testing Environment – Kali, Metasploitable, Vagrant

Posted on November 23, 2017 by Tero Karvinen

My student Toni Jääskeläinen developed a PenTest environment that can be set up automatically. Based on my idea, it’s distributed as a single Vagrantfile. Using pentest tools requires special care and skill, as even mistakes with some of these tools … Continue reading →

Posted in Uncategorized | Tagged atlas, box, exploit, haaga-helia, Kali, Metasploit, Metasploitable, murtautuminen, murto, nmap, ONT, opinnäyte, penetration testing, pentest, private network, security, student, thesis, tietomurto, tietoturva, vagrant, Vagrantfile, VirtualBox, virtualization | Comments Off

ElasticSearch Password Authentication with Free Software

Posted on July 10, 2016 by Tero Karvinen

ElasticSearch is a scalable full text search engine. I have used it for searching 13 terabytes of files: 1.9 million files full text indexed, metadata for others. You can limit access to ElasticSearch with login and password. You don’t neeed … Continue reading →

Posted in Uncategorized | Tagged authentication, big data, elastic, ElasticSearch, free, full text, fulltext, HTTP Basic Authentication, In English, login, NoSQL, password, readonly plugin, search, security, server, shield, ubuntu, username | Comments Off

Prefer IPv4 on Ubuntu 16.04 LTS xenial – /etc/gai.conf

Posted on May 12, 2016 by Tero Karvinen

New Ubuntu 16.04 LTS Xenial prefers IPv6 connections. In some networks, this breaks software updates. You can easily fix this by making Ubuntu prefer IPv4 connections over IPv6.

Posted in Uncategorized | Tagged apt, apt-get, bug, IPv4, IPv6, security, short, ubuntu, Ubuntu 16.04 LTS, xenial | Comments Off

Security Researcher Ali Dehghantanha visits Haaga-Helia – w14 Wednesday 09:00

Posted on March 10, 2016 by Tero Karvinen

Doctor Ali Dehghantanha will visit HH from Salford University. He’ll give a presentation on computer security. Haaga-Helia auditorium, w14 Tuesday Wednesday 2016-04-05 09:00 … 12:00 The event is open for Haaga-Helia students and staff. UPDATE: Day changed to WEDNESDAY. Time … Continue reading →

Posted in Uncategorized | Tagged Auditorium, Cyber Security, haaga-helia, Helsinki, Pasila, penetration testing, pentest, security, Visiting Lecture | 2 Comments

Forensic File Recovery with Linux – Undelete

Posted on September 11, 2013 by Tero Karvinen

Want your deleted files back? Plan A: have backups. Plan B: take a disk image and use a tool to undelete your files. If you are doing forensic analysis, file recovery is your only option. Prequisites: fluency with the command … Continue reading →

Posted in Uncategorized | Tagged backup, command line, coroners toolkit, CSI, dd, dd_rescue, deleted files, disk image, filesystem, forensic, forensic analysis, mount, recovery, scan of the month, security, sleuthkit, timeline, tsk_recover, undelete, unrm | Comments Off

Cyber Security Day in Haaga-Helia

Posted on September 9, 2013 by Tero Karvinen

Protect your systems against cyber crime. Preliminary agenda and description in Finnish. The event is completely in English. Free registration, open to all. Auditorium in Haaga-Helia Pasila, Helsinki. w39 Tue 2013-09-24 at 13:00.

Posted in Uncategorized | Tagged event, Helsinki, In English, pen-testing, penetration testing, security | Comments Off

PGP – Sähköpostin salakirjoitus

Posted on August 28, 2009 by Tero Karvinen

Table of Contents PGP – Sähköpostin salakirjoitus Asenna Linuxissa Windowsissa Luo avainpari (kaikissa käyttöjärjestelmissä) PGP – Sähköpostin salakirjoitus Kun salakirjoitat sähköpostisi, ulkopuoliset eivät pääse urkkimaan tietojasi. PGP on suosituin tapa salata sähköpostia, eikä suotta. Se on ilmainen ja toimii Linuxilla, … Continue reading →

Posted in Old Site | Tagged email, encryption, gnupg, linux, pgp, security | 1 Comment

Ssh public key authentication

Posted on March 10, 2008 by Tero Karvinen

Ssh public key authentication How to set up public key authorization with linux distributions using openssh, such as Fedora, Red Hat or Debian. In this howto, you are on your own computer (whose name is local) as user erkki. You … Continue reading →

Posted in Old Site | Tagged linux, pubkey, security, ssh | Comments Off

NAT iptables – share internet connection and ip-number

Posted on March 6, 2008 by Tero Karvinen

NAT iptables – share internet connection and ip-number Network Address Translation (NAT) means that one computer shares single internet connection and single ip to many computers. Internet connection is a critical part of network, so stability and security make Linux … Continue reading →

Posted in Old Site | Tagged firewall, frugality, iptables, linux, nat, security | Comments Off

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