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Stay Ahead With Linux Security HOWTOs

7.Locks HexConnections Esm H350
How to Secure My NetworkPrice Tag 1access control Linux administration

Most SSH hardening advice ends at the same recommendation: Disable password authentication and use SSH keys. . That's good advice. It removes entire classes of attacks, including password spraying, credential stuffing, and brute-force attempts against exposed servers. The problem is what happens next. Many administrators treat SSH keys as the finish line when they are really the beginning of the hardening process. Attackers rarely care whether they obtained access with a password or a private...
1 min read How to Secure My Network
Detect Unauthorised Ssh Keys Hero Esm H350
How to Secure My NetworkPrice Tag 1security advisory remote access

Most of the time, nobody notices. SSH authentication succeeds, no alerts are generated, and the connection looks exactly the way it did the day the key was installed. That's part of the problem. . When security teams investigate unauthorized access on Linux systems, they often focus on passwords, exposed services, or vulnerable software. Trusted access receives less attention. Yet a single forgotten or unauthorized SSH key can provide the same access as a legitimate user while attracting very...
4 - 7 min read How to Secure My Network
IDS VS IPS Esm H350
How to Secure My NetworkPrice Tag 1intrusion detection application security

The wrong IPS rule can look like a security fix right up until it becomes an outage. . On Linux systems, detection and prevention are often discussed together, but they do not carry the same operational risk. One tells admins that something suspicious happened. The other can decide whether traffic is allowed to continue. That is why IDS vs IPS is not just a definition to memorize. It is a deployment decision about where to monitor, where to block, and how much confidence a team needs before...
4 - 8 min read How to Secure My Network
8.Locks HexConnections CodeGlobe Esm H350
How to Secure My NetworkPrice Tag 1unauthorized access security techniques

Exposed SSH servers are continuously hammered by brute-force attacks, password spraying, credential stuffing, and recycled passwords from infostealer dumps. Attackers rotate usernames, test weak credentials, and probe for anything that gives them initial access. The logs usually look messy long before the compromise happens. . The difficult part is separating harmless failures from actual intrusion activity. One failed login from an internal workstation rarely matters. Repeated failures...
5 - 9 min read How to Secure My Network
7.Locks HexConnections Esm H350
How to Secure My NetworkPrice Tag 1security advisory incident response

The first 30 minutes after discovering a compromised Linux server usually decide how much evidence remains available. One rushed reboot or cleanup attempt can wipe logs, terminate malicious processes, or remove network activity that investigators still need to review. Attackers also do not usually stay on one system for long once access is established. Early response is mostly about preserving visibility. Collect process information. Save network connections. Limit access carefully before...
6 - 11 min read How to Secure My Network
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Explore Latest Linux Security HOWTOs

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Balancing Security Usability Esm H240
Price Tag 1security measuressystem administrationLinux distributions

Achieving Balance Between Security and Usability in Linux Systems

Security is a balance between accessibility, usability, and restriction - too far in any of those directions, and you're in for trouble. Here are some tips on how to strike that balance with your Linux system. . The internet is full of people who want to destroy your stuff. Some of them are just curious, some are seeking a thrill, others are trying to steal your data, and some just want to watch things burn. Whatever their motive, it's your job as a sysadmin to keep these attackers out of your servers. If you're running a Linux system, this article is for you. We're going to run through some of the reasons why you need to harden your systems and other high-level considerations. Building an operating system is a difficult balance, and a Linux distribution is no different. You need to consider the out-of-the-box functionality that most people are going to want, and accessibility for a wide swath of administrators' skillsets. If you make your distro very secure, but a newbie sysadmin can't figure out how to work with it…well, they're going to find an easier distribution to go learn on, and now you've lost that admin to another distribution. So it's really no surprise that, right after install time, most Linux distributions need a little bit of tweaking to lock them down. This has gotten better over the years, as the installers themselves have gotten easier to use and more feature-rich. You can craft a pretty custom system right from the GUI installer. A base Red Hat Enterprise Linux (RHEL) system, for example, if you've chosen the base package set, is actually pretty light on unnecessary services and packages. . Finding the right equilibrium in Linux security and user-friendliness is essential for system administrators. Here are actionable strategies to maintain this balance.. Linux Security Tips, Usability in Linux, System Administration Tools, Hardening Linux Systems, Balancing Security and Usability. . Brittany Day

Calendar 2 Sep 28, 2020 •User Avatar Brittany Day How to Learn Tips and Tricks
News Add Esm H240

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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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