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Topic 2 Posts

Disable UFW BLOCK messages in syslog on Ubuntu

By Michael Friedrich in ubuntu on 02 Jun 2022

ufw a firewall on Ubuntu works great, except for logging too verbose into the syslog. $ less /var/log/syslog Jun 2 00:00:56 legendiary kernel: [147272.918975] [UFW BLOCK] IN=eth0 OUT= MAC=96:00:00:37:5b:55:d2:bc:7f:6e:34:e3:a3:00 SRC=197.…

Remove sensitive data from Linux hosts (history, logs, config, etc.)

By Michael Friedrich in linux on 11 Oct 2020

You may run into the case of purging a system and removing sensitive data, e.g. when transferring VM ownership. There are multiple steps with shell history, configuration, home directories and stateful/log data. Delete shell history rm $HOME/.bash_history history -cw Configuration and Home Directories In the best…