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Category: Hardening


Optimize HDD IO

Posted by in Hardening, Linux, Storage

add /etc/sysctl.conf vm.dirty_ratio = 6 vm.dirty_background_ratio = 3 vm.vfs_cache_pressure = 50 vm.swappiness = 1 load sysctl -p add /etc/udev/rules.d/10-local.rules ACTION==”add|change”, KERNEL==”sd[a-z]”, ATTR{queue/rotational}==”0″, ATTR{queue/scheduler}=”deadline”


Configuration La-Samhain, Yule | Samhain

Posted by in Hardening, Linux, Network, Security

Download La-Samhain wget -c http://www.la-samhna.de/archive/samhain_signed-4.1.5.tar.gz Install Server Yule Hostname : sec.wajatmaka.com | FQDN Add a User Yule useradd yule


Audit Server With Lynis

Posted by in Hardening, Linux, Remote, Security

Install Download wget https://cisofy.com/files/lynis-2.4.0.tar.gz


bash: fork: retry: Resource temporarily unavailable

Posted by in Fixing, Hardening, Linux

This is commonly caused by running out of file descriptors. There are different file descriptor limits. There is the systems total file descriptor limit, what do you get from the command: CODE: SELECT ALL sysctl fs.file-nr


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