Linux Socket Monitor (LSM) is a lightweight security tool designed to monitor network sockets and Unix domain sockets on a server. It acts as a port monitoring solution that detects newly opened ports and alerts administrators about potential security risks. LSM works by comparing current server sockets with previously recorded socket information. Whenever a new port becomes active, the system sends an alert notification. What Is Linux Socket Monitor (LSM)? LSM continuously monitors: Unlike traditional monitoring tools, LSM ignores already active services and triggers alerts only when a new socket or port is created. This makes it useful for detecting: Step 1: Download LSM Navigate to the source directory and download the latest LSM package: Step 2: Extract the Package …
FirewallD is a new firewall suite being introduced to Linux distribution. At present, the all-new popular CentOs 7 has it as the default firewall suite which in near future will be implemented in servers. FirewallD, as usual, was developed by the Fedora community and was implemented in the 20th version of the same. It is also being used in arch Linux and others till the date. FirewallD is a dynamic firewall, dynamic in the sense that any change in the firewall will be implemented as soon as the amendment is made. That is unlike the previous firewall suite (iptable) where no hard reset or restart is needed to implement the rule amended or included. Iptables is deprecated in the early …
Portsentry is a tool to detect port scans and log it. Once a host is targeted by an attacker, a port scan is almost always performed. PortSentry detects such scans by monitoring the unused ports on the host. Upon a connection attempt to one of the unused ports, PortSentry is alerted and has the ability to issue a number of commands in response to the scan. Installation # cd /usr/src/ # wget http://sourceforge.net/projects/sentrytools/files/latest/download
Modern IT environments demand efficient server administration, remote access, strong security, and real-time control. Today, system administrators rely on powerful tools that simplify remote management, troubleshooting, and infrastructure monitoring. In this article, we explore 10 of the best server administration tools used by Linux and cross-platform administrators to manage servers efficiently from anywhere. Why Server Administration Tools Matter Effective server management helps organizations: The right tools allow administrators to manage servers without being physically present. 1. TightVNC TightVNC is a lightweight remote desktop software that enables administrators to connect to another computer and view or control its desktop remotely. Key Features Operating Modes Application Mode Service Mode TightVNC is widely used for basic remote support and server monitoring tasks. 2. …
SSH tunneling is used to tunnel all of the traffic from your local machine to a remote server that you have an account. SSH allows users to create TCP tunnels to send data over the network. The amazing thing about SSH tunnels is that they are encrypted. How tunneling works? This works by allocating a socket to listen to port on the local side, optionally bound to the specified bind_address. Whenever a connection is made to this port, the connection is forwarded over the secure channel, and a connection is made to host port from the remote machine. Port forwardings can also be specified in the configuration file. There are two ways to create an SSH tunnel: local and remote …
MariaDB is a high performance drop-in replacement for MySQL, developed by some of the original authors of the MySQL project. For years, MySQL has been the dominant open-source database management system (DBMS). Recently, MariaDB, the MySQL fork created by MySQL’s founder, has been making in-roads and websites like Wikipedia the world’s sixth most popular Web site, is shifting over from MySQL to MariaDB. Lets check how to replace MYSQL with MARIADB in a cpanel server Step 1: Backup existing MySQL data Before installing mariadb make sure to take backup of current mysql data
Subversion (SVN) is an open source version control system. It helps you keep track of a collection of files and folders. Any time you change, add or delete a file or folder that you manage with Subversion, you commit these changes to your Subversion repository, which creates a new revision in your repository reflecting these changes. You can always go back, look at and get the contents of previous revisions. This article will help you for step by step setup SVN server on a cPanel/WHM server. Prerequisite 1. sqlite3 php module 2. Apache mod_dav module. Installing php sqlite3 module Run the following command in the server terminal #php -m | grep sqlite If the module is installed already, …
Spam emails are commonly referred to as unsolicited or junk emails sent in bulk without user consent. In a cPanel server running Exim, spamming usually occurs due to compromised accounts, vulnerable scripts, or improperly configured applications. Common Causes of Server Spamming Spamming generally happens in the following ways: General Fix for Spamming Issues Case 1: Spam Sent via PHP Script Step 1: Check Mail Queue Count A high number indicates possible spam activity. Step 2: View Recent Emails in Queue Step 3: Inspect Email Header Check the auth_id field to identify the account sending spam. Step 4: Locate the Spam Script Identify heavily used mail directories: Step 5: Disable the Script Step 6: Find Malicious IP Accessing Script Block the …
A new vulnerability has been found that potentially affects most versions of the Linux and Unix operating systems, in addition to Mac OS X. Known as the “Bash Bug” or “ShellShock,” the GNU Bash Remote Code Execution Vulnerability could allow an attacker to gain control over a targeted computer if exploited successfully. And because Bash is everywhere on Linux and Unix-like machines and interacts with all parts of the operating system, everyone anticipates that it will have lot of repercussions. How does Shellshock work? Shellshock exploits a flaw in how Bash parses environment variables; Bash allows functions to be stored in environment variables, but the issue is Bash will execute any code placed after the function in the environment variable …
Accessing webmail through SquirrelMail, Horde, or Roundcube should normally work without issues. However, administrators may sometimes encounter a blank screen or repeated login failed errors even when the username and password are correct. This issue is usually caused by incorrect domain ownership, corrupted user domain files, or a hostname conflict within the cPanel server. This guide explains how to troubleshoot and resolve the problem step by step. Issue Description While accessing webmail clients such as: you may notice: These symptoms typically indicate a domain ownership mismatch on the server. Solution Steps Step 1: Check Domain Ownership Login to your server via SSH as root and run: Replace domain.com with the affected domain name. The command should display the correct cPanel …