Published on 22 Nov 2007
This document offers a practical introduction to Public Key Infrastructures and the fundamental technologies which are involved. After a formal outline of PKI, two popular implementations are discussed: X.509 PKI and OpenPGP PKI. Every aspect and every task is demonstrated using commands that are based either on the OpenSSL library or the GnuPG command line tool.
Published on 12 Nov 2007
Windows Server with Terminal Services usually runs in execute mode to serve applications. Whenever a new application is being installed, this must be done in install mode for Windows to monitor write operations affecting HKEY_CURRENT_USER
. Switching between install and execute mode is performed by change user
as described in MS KB 186504 - Terminal Server Commands: CHANGE. All changes to HKEY_CURRENT_USER
are then shadowed to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install
, hence the name shadow keys. These keys are copied to a user’s HKEY_CURRENT_USER
hive during logon.
Published on 11 Nov 2007
I proudly present my blog and … no content, yet. I am currently preparing the first article to be published in the course of the next few days, so stay tuned. In the meantime please subscribe to the RSS feed ;-)
Published on 30 May 2007
As stated earlier in avoiding regular expressions, it may beneficial to avoid regexes to improve performance. The following code demonstrates five different ways to split a string.
Published on 08 Oct 2006
The modules collected herein provide perl classes which I base further projects on.
Published on 08 Oct 2006
This perl module contains several useful functions for the statistical analysis of a series of measurements. These were implemented during my diploma thesis to.
Published on 27 Nov 2005
Use the following modules to process XML in Perl:
Published on 27 Nov 2005
The ssh-add
utility (see SSH agent for details) accepts a program in the environment variable SSH_ASKPASS
that retrieves a passphrase from the user. This is especially useful to use the SSH agent from a script or a GUI (i.e. without a console).
Published on 27 Nov 2005
The following list will provide some hints how to configure you SSH daemon although most options will not have to be modified as they also contain reasonable defaults.
Published on 27 Nov 2005
The following code forms the typical header for my Perl scripts: