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To check which all ports are listening (Introducing Four Linux Commands)

Tags: Linux

Published on : July 8, 2019 by

To check which all ports are listening (Introducing Four Linux Commands)

Preface:

A port is an addressable network location implemented in an operating system to help differentiate traffic destined for different services or Applications. The state of a port is either open, filtered, closed, or unfiltered. A port is said to be open if an application on the target machine is listening for connections/packets on that port. […]

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Monitor changes made to a file using auditd

Tags: server monitoring

Published on : July 6, 2019 by

Monitor changes made to a file using auditd

Preface:

Modern Linux kernel comes with auditd daemon. It is responsible for writing audit records to the disk. During startup, the rules in /etc/audit.rules are read by this daemon. You can open /etc/audit.rules file and make changes such as setup audit file log location and other option. The default file is good enough to get started […]

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Hardware Firewalls vs Software Firewalls

Tags: Security

Published on : July 3, 2019 by

Hardware Firewalls vs Software Firewalls

Preface:

Hardware Firewall Hardware firewall provides the first line of defence against common forms of attack coming from the outside world. They protect every machine on a local network and can generally be effective with little or no configuration. A technique called packet filtering is used in a typical broadband router as a hardware firewall, which examines the header of a packet to determine […]

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Steps to build a cPanel hosting environment on Amazon AWS

Tags: awscPanel

Published on : July 1, 2019 by

Steps to build a cPanel hosting environment on Amazon AWS

Preface:

cPanel/WHM hosting environment on Amazon AWS cPanel is a Linux based web hosting control panel that works through a Graphical user interface(GUI). The main advantage of cPanel server is that it can be easy to install and configure websites and E-mail. It can be even installed on an operating system which is minimally configured. WHM […]

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cPanel email going to spam? Here’s how to fix it.

Tags: cPanel

Published on : June 14, 2019 by

cPanel email going to spam? Here’s how to fix it.

Preface:

Mail servers use a wide array of anti-spam checks to keep out spam. This includes IP reputation check, message composition, RFC compliant SMTP handshake, mail user feedback, and more. All these checks together produce a spam score that determines whether a mail is a spam or not. Spammers constantly adapt to these anti-spam measures, so […]

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