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Stay Ahead With Linux Security HOWTOs

Reduce Attack Surface Of Public Linux Servers Hero Esm H350
How to Secure My NetworkPrice Tag%201network security Linux administration

Open ports have a way of accumulating over time. A test environment gets deployed and never removed. An administrative interface is exposed for troubleshooting and left in place. A database that was supposed to listen internally ends up reachable from the internet. . Attackers look for these mistakes constantly. Redis, Elasticsearch, MongoDB, Jenkins, and similar services still show up on internet-facing systems where they were never meant to be exposed. Sometimes it's a temporary change that...
1 min read How to Secure My Network
How To Remove Malicious Cron Esm H350
How to Secure My NetworkPrice Tag%201security advisory intrusion detection

A compromised Linux server can continue running malware long after the initial intrusion. One of the most common persistence techniques is a malicious cron job that silently downloads payloads, restarts malware, or re-establishes attacker access every few minutes. This guide shows how to identify suspicious cron entries, preserve forensic evidence, remove unauthorized scheduled tasks, and verify that no additional persistence mechanisms remain. . What Should You Save Before Removing Cron Jobs...
5 - 9 min read How to Secure My Network
7.Locks HexConnections Esm H350
How to Secure My NetworkPrice Tag%201access 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...
6 - 12 min read How to Secure My Network
Detect Unauthorised Ssh Keys Hero Esm H350
How to Secure My NetworkPrice Tag%201security 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%201intrusion 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
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19.Laptop Bed Esm H240
Price Tag%201incident responseopen sourcesecurity tools

Kali Linux Tutorial: Using Pentesting Tools And Best Practices

Kali Linux turns 10 this year, and to celebrate, the Linux penetration testing distribution has added defensive security tools to its arsenal of open-source security tools. . It remains to be seen if Kali Purple will do for defensive open source security tools what Kali Linux has done for open source pentesting, but the addition of more than 100 open source tools for SIEM , incident response , intrusion detection and more should raise the profile of those defensive tools. For now, Kali is primarily known for its roughly 600 open source pentesting tools, allowing pentesters to easily install a full range of offensive security tools. In this article, we’ll focus primarily on how to use this powerful OS to run a pentest and mistakes to avoid. We’ll give you an overview of what can be achieved with Kali Linux using a short selection of pre-installed tools. While this guide serves as an introduction to common pentesting phases , with practical examples that highlight best practices, it’s not a substitution for a complete professional pentesting methodology. . Explore Kali Linux's pentesting tools and best practices for effective security assessments and defensive measures.. linux, turns, celebrate, penetration, testing, distribution. . Brittany Day

Calendar%202 May 06, 2023 •User Avatar Brittany Day How to Secure My Network
News Add Esm H240

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[{"id":483,"title":"Self-taught through trial and error","votes":559,"type":"x","order":1,"pct":78.73,"resources":[]},{"id":484,"title":"Formal training or courses","votes":31,"type":"x","order":2,"pct":4.37,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.79,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.11,"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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