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ARP attacks and ARP flooding are common problems small and large networks are faced with. ARP attacks target specific hosts by using their MAC addres…
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Palo Alto Networks
Our previous article explained how Palo Alto Firewalls make use of Security Zones to process and enforce security policies. This article will explain the…
Palo Alto Networks
This article provides comprehensive guidance on the manual processes involved in downloading, uploading, and installing (import) any PAN-OS version on a P…
Palo Alto Networks
This article is the second-part of our Palo Alto Networks Firewall technical articles. Our previous article was introduction to Palo Alto Networks Firewal…
Palo Alto Networks
This article explains how to register and activate your Palo Alto Firewall Appliance to obtain technical support, RMA hardware replacement, product update…

Windows Servers
This article serves as an Active Directory tutorial covering installation and setup of Windows 2012 Active Directory Services Role & Domain Controller…
Windows Servers
FREE Hyper-V & VMware Virtualization Backup:  FREE for Firewall.cx readers for a Limited Time!  Download Now! Windows Server 2012 Editions…
Windows Servers
In this article we will show you how to enable the ‘Web Server’ certificate template option on a Windows Certification Authority (Windows CA) Server. …
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 Director…

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Windows Servers
This article serves as an Active Directory tutorial covering installation and setup of a Windows 2012 Domain Controller using Windows Server Manager (GUI)…
Virtualization & VM Backup
Microsoft 365 is an incredibly powerful software suite for businesses, but it is becoming increasingly targeted by people trying to steal your data. The g…
Windows Servers
Sometimes renaming a domain is an essential business requirement. There are many situations, such as mergers, change of company name or migration from a t…
Network Fundamentals
A network is simply a group of two or more Personal Computers linked together. Many types of networks exist, but the most common types of networks are Loc…

Cisco CallManager-CCME
Most engineers are aware that to download and install the latest Cisco CallManager Express (CCME) Graphical User Interface (GUI) files, Cisco requires a r…
Cisco Switches
This article provides in-depth analysis of DHCP Option 82 (DHCP Relay Agent) which is one of the +180 DHCP Options available to the DHCP protocol and used…
Cisco Routers
The Point-to-Point Protocol is one of the most popular protocols around used by engineers, ISPs and companies around the globe for authentication of remot…
Cisco Routers
The DNS protocol is used to resolve FQDN (Fully Qualified Domain Names) to IP addresses around the world. This allows us to successfully find and connect…