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MS Server Articles:

Windows Servers
FREE Hyper-V & VMware Backup:  FREE for Firewall.cx readers for a Limited Time!  Download Now! Virtualization is an abstraction layer…
Windows Servers
The Domain Name System (DNS) is perhaps one of the most important services for Active Directory. DNS provides name resolution services for Active Dir…
Windows Servers
Our previous article explained what Group Policy Objects (GPO) are and showed how group policies can be configured to help control computers and user…
Windows Servers
This article provides a comprehensive guide to deploying Active Directory and DNS Services on Windows Server 2022, encompassing the Essential, Standa…

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Virtualization & VM Backup Articles:

SysAdmin Day has arrived, and with it, gratitude for all the unsung heroes that 2020 has needed. Your hard work has made it possible for all of us to…
Microsoft 365 is an incredibly powerful software suite for businesses, but it is becoming increasingly targeted by people trying to steal your data…
In this article we will show you how to enable SNMP on your VMware ESXi host, configure SNMP Community string and configure your ESXi firewall to all…
In this article, we’ll show you how to setup or install Microsoft Windows 11 on VMware’s ESXi servers and bypass the Trusted Platform Module version…

Cybersecurity Framework Update

2026 Cybersecurity Essentials Framework Update

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Linux - Unix
For many engineers and administrators,  maintaining a Linux system can be a daunting task, especially if there’s limited time or experience.  Wo…
Linux - Unix
So far we have covered in great detail the main files required for the firewall.cx domain. These files, which we named db.firewall.cx and db.192.168.0, de…
Linux - Unix
It's time to start creating our zone files. We'll follow the standard format, which is given in the DNS RFCs, in order to keep everything neat and less co…
Linux - Unix
In a multi-user environment like Linux, every file is owned by a user and a group. There can be others as well who may be allowed to work with the file. W…

Popular Topics

Network Protocol Analyzers
Firewall.cx has covered Colasoft Capsa several times in the past, but its constant improvements make it well worth revisiting. Since the last review, the…
Cisco Routers
Generic Routing Encapsulation (GRE) is a tunneling protocol developed by Cisco that allows the encapsulation of a wide variety of network layer protocols…
Cisco Data Center (Nexus/UCS)
This article shows how to perform an ISSU (In-Service Software Upgrade) on a Nexus Data Center switch (7000 and 7700 models) and avoid service and network…
OpManager - Network Monitoring & Management
The hybrid work culture has resulted in workforces increasingly using their mobile devices for work, further adding to the complexity of ensuring security…