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Online instructions for securing Linux

The use of open-source operating systems such as Linux can be wonderful, but they can be a nightmare for Oracle servers if the DBA does not know how to secure the Linux environment.  Installed improperly, an entire Oracle database can be at-risk from root-kit attacks and other hacks:


Arup Nanda has a book “Oracle Privacy Security Auditing” with a complete discussion of this critical security issue:


Rampant TechPress offers a free poster of Oracle Linux security command syntax:


This web site has a fairly comprehensive set of step-by-step instructions for securing a Linux operating environment:


This HOWTO is intended for a technical audience, Linux system administrators and security people in corporations and organizations that have to use commercial Linux distributions in production. The primary focus of this Linux Security guide is to discuss basic security requirements that should be met by all audited Linux production servers at a minimum.


This document covers system services like SSH which are usually needed and running on most Linux production servers. But this article does not cover Apache, Samba etc. since these services are usually not needed on all systems. This article does not cover various security features that require patching the kernel. In production environments, this is not an option for most companies due to support issues. The objective of this article is to cover basic security requirements for Linux systems and to provide a clear understanding. This Linux Security Cookbook has been tested on Red Hat Linux but should also be applicable to most other Linux distributions like SUSE.


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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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