Linux Archives - Ezeelogin Blog | SSH Security, PAM & Linux Server Management https://www.ezeelogin.com/blog/category/linux/ Expert articles on SSH jump servers, bastion hosts, SSH key management, PAM, RBAC, and Linux security. Practical guides from the Ezeelogin team. Wed, 04 Nov 2026 10:06:10 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.4 PHP2Shell: Patch CVE-2026-109618 & CVE-2026-109619 https://www.ezeelogin.com/blog/php2shell-two-critical-php-flaws-and-how-to-patch-them/ Tue, 27 Oct 2026 12:17:02 +0000 https://www.ezeelogin.com/blog/?p=2882 PHP2Shell: Two Critical PHP Flaws That Turn One HTTP Request into Code Execution PHP2Shell is a critical PHP remote code execution vulnerability pair, tracked as CVE-2026-109618 and CVE-2026-109619. On 21 October 2026 the PHP project shipped emergency releases for both flaws in the language runtime itself. Each is rated 9.2 (Critical) on CVSS v4.0, and

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]]> Plague: The PAM-Based Linux Backdoor https://www.ezeelogin.com/blog/plague-the-pam-based-linux-backdoor/ Thu, 19 Feb 2026 09:48:14 +0000 https://www.ezeelogin.com/blog/?p=1964 Plague is a newly discovered, highly sophisticated Linux backdoor making headlines across the cybersecurity community. Unlike conventional malware, Plague embeds itself into PAM (Pluggable Authentication Modules)—the core authentication framework for Linux—granting attackers stealthy, persistent access that bypasses standard login mechanisms. Researchers warn that Plague has been quietly evolving since mid-2024 and remained undetected for more than

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]]> SSHStalker: A deep dive into the new IRC-controlled Linux botnet infecting thousands of servers https://www.ezeelogin.com/blog/sshstalker-a-deep-dive-into-the-new-irc-controlled-linux-botnet-infecting-thousands-of-servers/ Thu, 19 Feb 2026 04:02:51 +0000 https://www.ezeelogin.com/blog/?p=2456 In early 2026, cybersecurity researchers uncovered a stealthy Linux botnet operation that has infected nearly 7,000 servers worldwide — not with advanced AI or zero-day exploits — but by resurrecting old-school techniques: SSH brute-force compromise, decade-old Linux vulnerabilities, and text-based IRC (Internet Relay Chat) command-and-control (C2) communication. Dubbed SSHStalker, this campaign staggering in scale highlights

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]]> SSH Tunneling: A Complete Guide to Secure Network Access https://www.ezeelogin.com/blog/ssh-tunneling-a-complete-guide-to-secure-network-access/ Fri, 16 Jan 2026 08:33:10 +0000 https://www.ezeelogin.com/blog/?p=2180 Introduction In today’s interconnected world, securing data as it travels across networks is more important than ever. Whether you’re accessing a remote server, managing databases, or working from an untrusted network, exposed connections can become easy targets for attackers. SSH tunneling offers a powerful yet lightweight solution by encrypting network traffic and safely forwarding it

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]]> Port Forwarding and Networking https://www.ezeelogin.com/blog/port-forwarding-and-networking/ Tue, 28 Oct 2025 14:32:01 +0000 https://www.ezeelogin.com/blog/?p=2055 Networks are now involved in nearly every event that occurs in our interconnected world. Whether you’re playing online games, hosting a website, or accessing a home security camera, network management should interface those activities. One technique that helps enable any of those activities is port forwarding. What is Port Forwarding? Port forwarding (also known as

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]]> OpenSSH 10.0: Security Features & Updates https://www.ezeelogin.com/blog/openssh-10-0-security-features-updates/ https://www.ezeelogin.com/blog/openssh-10-0-security-features-updates/#respond Thu, 07 Aug 2025 13:17:39 +0000 https://www.ezeelogin.com/blog/?p=1933 OpenSSH 10.0: A Comprehensive Look at it’s Security-Driven Overhaul OpenSSH 10.0 released on April 9, 2025, marks a turning point for one of the most critical tools in modern IT infrastructure. As the de facto standard for secure remote administration, file transfer, and tunneling, OpenSSH has continuously evolved to address new threats and cryptographic trends.

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]]> https://www.ezeelogin.com/blog/openssh-10-0-security-features-updates/feed/ 0 Securing SSH Access with Faillock https://www.ezeelogin.com/blog/securing-ssh-access-with-pam_faillock/ https://www.ezeelogin.com/blog/securing-ssh-access-with-pam_faillock/#respond Thu, 24 Jul 2025 07:31:29 +0000 https://www.ezeelogin.com/blog/?p=1884 Faillock is a security module within the PAM (Pluggable Authentication Modules) framework used in Linux systems. The pam_faillock.so module tracks failed login attempts from individual users over a defined time interval. The module automatically locks the user’s account when the number of failed attempts exceeds the configured threshold. This mechanism helps to protect Linux systems

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]]> https://www.ezeelogin.com/blog/securing-ssh-access-with-pam_faillock/feed/ 0 How to fix OpenSSH vulnerability CVE-2024-6387? https://www.ezeelogin.com/blog/howtofix-openssh-vulnerability-cve-2024-6387/ Tue, 02 Jul 2024 11:50:11 +0000 https://www.ezeelogin.com/blog/?p=1631 CVE-2024-6387, known as regreSSHion, has been discovered in the OpenSSH server. This vulnerability allows remote unauthenticated attackers to execute arbitrary code on the target server, posing a significant threat to systems that use OpenSSH for secure communications. This article describe how to fix / patch openSSH vulnerability CVE-2024-6387.

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]]> 𝐅𝐮𝐭𝐮𝐫𝐞 𝐨𝐟 𝐒𝐒𝐇 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 https://www.ezeelogin.com/blog/future-of-ssh-security/ Thu, 21 Sep 2023 07:14:34 +0000 https://www.ezeelogin.com/blog/?p=1092 In today’s interconnected landscape, SSH is the backbone of secure access, but it’s facing new challenges.

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]]> Troubleshooting SSH https://www.ezeelogin.com/blog/troubleshooting-ssh-common-issues-and-how-to-fix-them/ https://www.ezeelogin.com/blog/troubleshooting-ssh-common-issues-and-how-to-fix-them/#respond Wed, 14 Jun 2023 13:09:35 +0000 https://www.ezeelogin.com/blog/?p=861 Troubleshooting SSH : Common issues and how to fix them Introduction Secure Shell (SSH) is a network protocol that allows us to secure remote access to servers. A network protocol called Secure Shell (SSH) is used to connect and interact securely with distant servers or computers and creates a secure channel over an unsecured network.

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