Windows log with Graylog 4

  Config in graylog Go to System > Inputs,  click “Select input” dropdown, and select “GELF UDP.” Tick “Global”. Give […]

DoS – TCP SYN cookies attack

The TCP Syn is DoS (Denial of Service) attack. It consumes resources on your Linux server. The attacker begin with […]

SendMail Config

Introduction Sendmail is a common email transfer agent. It has been around since 1983 and is still widely used on […]

Drupal installation

  The directory sites/default/files does not exist. An automated attempt to create this directory failed, possibly due to a permissions […]

Linux system config

Change your timezone # mv /etc/localtime /etc/localtime.backup # ln -s /usr/share/zoneinfo/Europe/Brussels /etc/localtime You need to substitute the lines in bold with your […]