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This is written by Krunix

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| Title: "Linux Hardening & Security" |
| Author: Krun!x | QK |
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Content:
1) Intruduction
2) cP/WHM Installation and cP/WHM Configuration
3) The server and it's services | PHP Installation, Optimization & Security
4) Kernel Hardening | Linux Kernel + Grsecurity Patch
5) SSH
6

How do I set advanced security options of the TCP/IP stack and virtual memory to improve security and performance of my system? How do I configure Linux kernel to prevent certain kinds of attacks using /etc/sysctl.conf? How do I set Linux kernel parameters?

sysctl is an interface that allows you to make changes to a running Linux kernel. With /etc/sysctl.conf you can configure various Linux networking and system settings such as:

Limit network-transmitted configuration for IPv4
Limit n