Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Stay Ahead With Linux Security HOWTOs

Investigating Linux Persistence Hero Esm H350
How to Harden My FilesystemPrice Tag%201Linux security incident response

You’re staring at a service or a cron job that’s giving you a bad feeling. Stop. The most dangerous thing you can do right now is act on that gut feeling alone. Linux systems are inherently noisy—package managers, configuration management, and the occasional "quick fix" from a colleague can all leave weird artifacts behind. . Step 1: Check Whether the File or Service Looks Normal When I'm looking at a scheduled task, I look for logic, not just anomalies. A cron job running...
1 min read How to Harden My Filesystem
EBPF Behavioral Detection Hero Esm H350
How to Learn Tips and TricksPrice Tag%201security framework process monitoring

Building effective behavioral detections starts with understanding how processes behave at runtime, rather than simply collecting more logs. eBPF gives Linux security teams the visibility needed to correlate those behaviors into meaningful detections, moving away from static signatures and toward real-time analysis. . The first surprise for most people coming from auditd or legacy log collectors is how much context suddenly becomes available. Instead of just seeing that a shell executed, you...
4 - 8 min read How to Learn Tips and Tricks
Linux Audit Logs Hero Esm H350
How to Learn Tips and TricksPrice Tag%201incident response linux

When a security alert fires, the panic often sets in before the analysis. Many administrators instinctively reach for /var/log/auth.log or journalctl , but those logs tell only a partial story. They document successful logins and authentication attempts, but they rarely capture the granular "how" of a post-compromise environment. To truly reconstruct an attack, you need to master audit logs . Unlike standard authentication logs, Linux audit logs (managed by auditd ) record system-level...
4 - 7 min read How to Learn Tips and Tricks
SELinux Hero Esm H350
How to Harden My FilesystemPrice Tag%201access control SELinux

SELinux troubleshooting is a necessary skill for any system administrator. When a service fails despite correct file permissions and ownership, the immediate instinct is often to disable SELinux to confirm if the security policy is the bottleneck. While turning off enforcement frequently "fixes" the immediate symptom, it hides the underlying configuration flaw—such as an incorrect context or a policy violation—that could leave your system exposed. This guide outlines a systematic approach to...
3 - 5 min read How to Harden My Filesystem
High System Load Hero Esm H350
How to Secure My NetworkPrice Tag%201incident response open-source

When a production server spikes at 99% CPU or the disk starts grinding, the knee-jerk reaction is usually to blame a bad code push or a runaway backup job. But if you’ve spent enough time in security incident response, you know that "performance issues" are often the first sign that you’re dealing with Linux malware. . If you don't have a systematic way to look past the performance graphs, you’re just guessing. Here is how you use Linux commands to peel back the layers when a system starts...
4 - 7 min read How to Secure My Network
Filter%20icon Refine HOWTOs
X Clear Filters
X Clear Filters
View More

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Community Poll

More Polls

Can sandbox isolation stop malware?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum {0} answer(s).
Please select maximum {0} answer(s).
/main-polls/154-can-sandbox-isolation-stop-malware?task=poll.vote&format=json
154
radio
0
[{"id":497,"title":"Breaches happen despite container barriers.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":498,"title":"Supply chain flaws exploit trust.","votes":2,"type":"x","order":2,"pct":100,"resources":[]},{"id":499,"title":"Flawed configurations expose vital files.","votes":0,"type":"x","order":3,"pct":0,"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
bottom 200
Loading...

Explore Latest Linux Security HOWTOs

We found -4 articles for you...
166
Board Business Chip Close Up 270572 Cropped Esm H240
Price Tag%201system administrationdata managementbackup tips

Five Essential Linux Backup And Restore Tips From Real Experience

Learn five helpful backup and restore tips for Linux from someone who's been there, failed, and then succeeded. . It's easy to quote best practices and to tell someone what they should do, but it doesn't always work in actual practice. "Everything works on paper," was my response to an architect who told me that I need to "adhere to the recommended guidelines and best practices rather than being a rogue sysadmin." The fact is that I wasn't aroguesysadmin. The problem was that this "architect"had never even been inside a data center, norhad he ever seen a server enclosure. He was simply reading a manual and telling me how it should be done, although he'd never had the experience of doing it himself. My experiences (and attitude) aside, you should follow, as closely as possible, the guidelines and the best practices for your systems. But, also follow your own best judgment in whatever you do as long as you have your users' and your system's best interests at heart. Here are my five Linux backup and restore tips from the trenches, in no particular order. The link for this article located at RedHat is no longer available. . Discover practical methods for securing and recovering your Linux data, based on real experiences. Learn about tools, techniques, and best practices for efficient backups and restorations.. Linux Backup Strategies, Restore Techniques, Data Management, System Recovery. . Brittany Day

Calendar%202 Mar 30, 2020 •User Avatar Brittany Day How to Learn Tips and Tricks
News Add Esm H240

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Community Poll

More Polls

Can sandbox isolation stop malware?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum {0} answer(s).
Please select maximum {0} answer(s).
/main-polls/154-can-sandbox-isolation-stop-malware?task=poll.vote&format=json
154
radio
0
[{"id":497,"title":"Breaches happen despite container barriers.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":498,"title":"Supply chain flaws exploit trust.","votes":2,"type":"x","order":2,"pct":100,"resources":[]},{"id":499,"title":"Flawed configurations expose vital files.","votes":0,"type":"x","order":3,"pct":0,"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
bottom 200

Search Topics

Your message here