Linux Security Hardening Lessons from an Office

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With this information, you can craft a WAF rule to either block all traffic from this IP address, or block all traffic with a bot score lower than 10. As we can see, Lockdown LSM helps to tighten the security of a kernel, which otherwise may not have other enforcing bits enabled, like the stock Debian one. I agree to receive product related communications from BeyondTrust as detailed in the Privacy Policy, and I may manage my preferences or withdraw my consent at any time. Learn how BeyondTrust solutions protect companies from cyber threats. By providing this information, you agree to the processing of your personal data by SANS as described in our Privacy Policy.

Linux Hardening and Security Lessons

We released features that span Cloudflare’s product portfolio, ranging from application security to securing employees and cloud infrastructure. We have also published a few stories on how we take a Customer Zero approach to using Cloudflare services to manage security at Cloudflare. In this post we reviewed some useful Linux kernel security configuration options we use at Cloudflare.

Best practice 5: Bind MySQL to an IP address

This illustrates why uncontrolled kernel module loading is very dangerous and that is why most security standards and commercial security monitoring products advocate for close monitoring of kernel module loading. This Linux security class is suitable for a wide range of professionals who work with Linux systems and want to learn about securing them. By attending this class, you will learn about Linux security concepts, best practices, and tools, and how to implement them in your organization. Linux Security and Hardening involve implementing practices and tools to protect Linux systems from unauthorized access, data breaches, and other security threats.

A secure WordPress database is an important part of your overall WordPress site security. Note that spam percentages shown here may be lower than those published in other industry analyses. Cloudflare cloud Linux Hardening and Security Lessons email security customers may be performing initial spam filtering before messages arrive at Cloudflare for processing, resulting in a lower percentage of messages characterized as spam by Cloudflare.


Please start your course media downloads as soon as you get the link. You will need your course media immediately on the first day of class. Do not wait until the night before class to start downloading these files. A hardening guide is a document that provides suggested improvements to secure a system. Typically these suggestions are categorized and include a rationale.

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