Roland's Blog
Computer related stuff including Linux
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Beginner
Badly configured webservers
Let's Encrypt Certificate for SMTP with STARTTLS
Christmas Time is Shopping Time ... Sort of
C++ - The Beast is Back (Halloween Special)
How to reduce digital carbon footprint
Top 5 reasons in favor or against a programming language
Slow wifi network on Linux laptop
Security Alert: Migrate to Post-Quantum Cryptography Right Now!
Android smartphone "Cubot Echo"
Security Guidelines
Intermediate
Don't reinvent the wheel ...
Evolution of Managed Network Services
Let's Encrypt Certificate for SMTP with STARTTLS
C++ - The Beast is Back (Halloween Special)
iptables: Block traffic by country (Debian 10)
Android smartphone "Cubot Echo"
Add entropy to KVM virtual guests (Why is key creation so slow?)
Security Guidelines
Password security - it is not about length or complexity
Upgrading from Ubuntu 16.04 LTS to 18.04 LTS
Expert
Don't reinvent the wheel ...
Are you safe from BGP hijacking?
Let's Encrypt Certificate for SMTP with STARTTLS
C++ - The Beast is Back (Halloween Special)
Android smartphone "Cubot Echo"
Security Guidelines
Password security - it is not about length or complexity
Squid, c-icap, ClamAV: Bug in the service. Please report to the service author!!!!
grub-install: error: disk '...' not found
Configuring wireless networks in Linux
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