Dovecot’s Miracle and Do You Wanna… Samba?
Miracle software with a simple name Dovecot Over the years I used Dovecot as a companion for Sendmail.…
Linux commands, Bind Configuration and Free DNS Tools
Linux Commands If you need to find out quickly what a certain Linux/Unix command means, this manual comes really hand.…
Identifying SSL Certificate Algorithm using nmap and openssl command
SSL certificate signature algorithm can be identified using nmap or openssl command. Here are the steps to identify…
Writing C software without stdlib
Major credits to http://betteros.org/ which got me into researchinglibc-free programming. Why would you want to avoid libc? Your…
Disabling TLS 1.0 on Apache Linux Server
TLS 1.0 is end of life on June 30, 2018. To disable TLS 1.0 on Apache webserver installations,…
Linux performance tuning – vm.swappiness
vm.swappiness takes a value between 0 and 100 to change the balance between swapping applications and freeing cache. At 100, the kernel will always prefer to find inactive pages and swap them out
Linux Performance analysis tools
Understand how various Linux performance monitoring tools behave when the system is heavily loaded in terms of cpu, memory and swapping to disk (IO).
How to configure Static routing in Linux
Steps to configure static routing in Linux, with examples.
Splunk Search Tips Cheatsheet
Searching in Splunk gets really interesting if you know the most commonly used and useful command sets and tips. A handy document on splunk searches.
Pocket guide for NetApp commands (7-mode)
Comprehensive NetApp Commands list for 7-mode filers
