Lock Down Strategies for Linux Servers

Locking Down Linux: Strategies Most of the security defenses on Linux, are based on the earlier performed hardening activities. By locking down components on the system, the chance of a full compromise is lowered. This step-by-step locking down is a time consuming process. Time to review some of the strategies which can be applied when you want to secure your systems. Strategy 1: Locking down processes The first area to lock down are system processes. After all, each system needs […]

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Most important steps for Linux server hardening

Linux Server Hardening 1. Install security patches Most weaknesses on a system are caused by flaws in software. So upgrading the system and installing software updates. It is fairly easy, limited risk, yet have a great impact. Most Linux distributions have the option to limit what packages you want to upgrade. Especially make sure that your security updates are installed as soon as they come available. Depending on your Linux distribution there might be a way to implement security patches […]

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How to secure Linux systems – Auditing, Hardening and Security

How to secure Linux systems Within this article we have a look on how to secure a Linux system. Focus of the article is providing tips regarding auditing, hardening and general security of Linux servers. Hardening Focus on minimizing By minimizing the footprint of the server, its data and users, we can more quickly determine if a system is running properly. Also risks will be reduced, as every part on a system might be something which can be sooner or […]

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Dealing with a compromised Linux system

Compromised Linux system Before we dive deep into this subject of dealing with a compromised Linux system, we have the answer the biggest question: how do we know we are compromised? Usually some signs are a clear give-away: The website hosted was altered and replaced with a “You have been hacked” page The system is missing essential binaries, or they all crash after executing Unauthorized users have been created and the system is hosting movies and music, which is not […]

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