Delphi 12 (and Rad Studio 12 and C++ Builder 12) has been released and is available for Download from my.embarcadero.com.
Author: dummzeuch
When setting sshd PasswordAuthentication to no has no effect
After setting up ssh authentication via public/private key for my user account on my Ubuntu 22.04 server, I wanted to disable authentication via password for security reasons. So in /etc/ssh/sshd_conf I changed the entry PasswordAuthentication from yes (the default) to no: [plain] # To disable tunneled clear text passwords, change to no here! PasswordAuthentication no … Continue reading When setting sshd PasswordAuthentication to no has no effect
Using two factor authentication for ssh with Ubuntu 22.04
Since many of the instructions I found on the internet seem to be flawed or at least outdated, here is how I managed to enable two factor authentication (2fa) with (time based) OTP in Ubuntu 22.04 using the Google Authenticator PAM plugin. Note: When using ssh private/public key based authentication, no OTP prompt will be … Continue reading Using two factor authentication for ssh with Ubuntu 22.04
Preventing accidental data loss with ZFS
I have recently converted the file system of some of our Samba servers from ext4 to ZFS. The idea was to use ZFS's compression feature to reduce the space some excessingly large files consume which can be easily compressed to take less than 1/10 the space. This works fine. Today we found that a directory … Continue reading Preventing accidental data loss with ZFS
Troubleshoot SSL/TLS connection with Indy
Yesterday, all of a sudden, one of my Delphi programs failed to connect to various WMS servers on the internet. I got the following error message: Error connecting with SSL. error 1409442E:SSL routine:ssl3_read_bytes:tlsv1 alert protocol version Since I was using a recent version of Indy, this should not happen, according to this thread on Delphi … Continue reading Troubleshoot SSL/TLS connection with Indy
Exporting Windows drivers with pnputil
I recently came across an entry in c't Magazin's FAQ about backing up Windows drivers for a fresh Windows installation. Their suggestion was to utilise the pnputil tool that is included with Windows. Further research on the topic brought up numerous other articles. Strangely, the c't article recommended the use of a PowerShell command prompt … Continue reading Exporting Windows drivers with pnputil
Mein Vortrag von den Forentagen [german only]
Mein Vortrag von den Forentagen zum Thema Ansteuerung von Sensoren auf Messfahrzeugen aus Delphi ist jetzt als Download (OpenOffice Impress Format) verfügbar oder auch direkt in HTML. Ebenso die gezeigten Sourcecode-Ausschnitte.
Vortrag auf den Forentagen 2023
Am 13. und 14. Oktober 2023 finden in Kassel zum ersten Mal nach der Corona-Pandemie die Forentage der deutschen Delphi-Foren statt. Ich wollte mich schon immer mal öffentlich blamieren und habe mich deshalb freiwillig gemeldet, um dort einen Vortrag zum Thema "Ansteuerung von Sensoren auf Messfahrzeugen aus Delphi" zu halten (11:45-12:45). Ich bin gerade dabei, … Continue reading Vortrag auf den Forentagen 2023
Thunderbird got less secure – again
With the recent update Mozialla make Thunderbird less secure again. Not only does it still not have an option to display the sender address instead or at least in addition to the sender's "Name" (In quotes, because more often than not that part of the from field has nothing to do with the sender's actual … Continue reading Thunderbird got less secure – again
All my open source projects have been moved back to SourceForge
Over the last few weeks I have moved all those of my projects that I had moved to OSDN back to SourceForge. (No, I won't move them to Github. I prefer Subversion over git and I can't see any advantages for me (or these projects) of moving to Github. Stop asking please!)