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Stay Ahead With Linux Security HOWTOs

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...
1 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
How To Diagnose Suspicious Outbound Connections On Linux Servers Hero Esm H350
How to Secure My NetworkPrice Tag 1network monitoring Linux server

When a Linux server initiates an unauthorized outbound connection to an unknown IP address, it rarely triggers an immediate system failure. Instead, the server continues running normally, and the connection is usually only discovered during a routine firewall log review, a DNS audit, or a post-incident investigation. Because there are no obvious system crashes or performance drops, these quiet outbound sessions can easily be overlooked. . However, treating these anomalies lightly is a...
6 - 11 min read How to Secure My Network
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Croc Esm H240
Price Tag 1data protectionencryptionfile transfer

Croc File Transfer: Securely Move Data Between Computers

Croc is a free and open-source command line tool that enables computers to easily and securely transfer files and folders using code phrases. Learn how to install and use croc in this tutorial. . There are lots of ways to transfer files between two or more computers. Today, we will discuss about yet another utility named Croc. This tutorial we’ll show you how to install Croc and how to use it to transfer files between computers. Croc is a file transfer system that sends files securely using end-to-end encryption, via a file transfer relay. If you are curious about the name, it is inspired by the fable of the frog and the crocodile. The Croc key advantages are speed, security, and simplicity, all-in-one. Transferring data using Croc is faster, because it acts as a relay server between the systems. It creates a full-duplex real-time communication layer between the two computers, so the “uploading” and “downloading” tasks occur simultaneously between those computers. . Delve into Croc, a public-source solution designed for safeguarding file exchanges across devices, utilizing end-to-end encryption for enhanced security.. Croc File Transfer, Safe File Sharing, Open Source Security. . Brittany Day

Calendar 2 May 14, 2021 •User Avatar Brittany Day How to Learn Tips and Tricks
News Add Esm H240

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