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Network Cabling
The 1000Base Ethernet standard, also referred to as Gigabit Ethernet (GbE or 1GigE) is defined by the IEEE 802.3-2008 standard and provides 10 times faster transfer speeds of 100Base Ethernet. Gigabi…
Ethernet Protocol, CSMA/CD, Collisions
The following is a description of the frame format described by the original Ethernet Version II specification as released by DEC, Intel, and Xerox. Like the 802.3 spec, the Version II spec defines a…
Virtualization & VM Backup
The Free Backup Bible Complete Edition written by backup expert and Microsoft MVP Eric Siron, is comprised of 200+ pages of actionable content divided into 3 core parts, including 11 customizable tem…
Network Fundamentals
Measuring network performance has always been a difficult and unclear task, mainly because most engineers and administrators are unsure which approach is best suited for their LAN or WAN network. A…
Cisco Wireless
The Firewall.cx Wireless LAN Key Generator will allow the generation of a WEP or WPA ASCII based encryption key and will provide the equivalent HEX or ASCII string so it can be inserted directly i…
Linux - Unix
Setting up a Secondary (or Slave) DNS sever is much easier than you might think. All the hard work is done when you setup the Master DNS server by creating your database zone files and configuring th…
Linux - Unix
BIND (Berkely Internet Name Domain) is a popular software for translating domain names into IP addresses and usually found on Linux servers. This article will explain the basic concepts of DNS BIND a…
Cisco Firewalls
Cisco’s Adaptive Security Appliance (ASA) Firewalls are one of the most popular and proven security solutions in the industry. Since the introduction of the PIX and ASA Firewall into the market, Cisc…
Windows Workstations (XP, 7, 8, 10, 11)
Thanks to the absence of dedicated serial ports on today’s laptops and ultrabooks, USB-to-Serial adapters are very popular amongst Cisco engineers as they are used to perform the initial configuratio…
SASE & SD-WAN Networks
Secure Access Service Edge (SASE) is an architecture widely regarded as the future of enterprise networking and security. In previous articles we talked about the benefits of a converged, cloud-deliv…
Cisco Firewalls
One Appliance – One Image is what Cisco is targeting for its Next Generation Firewalls. With this vision, Cisco has created a unified software image named “Cisco Firepower Threat Defense”.  In t…
Spanning Tree Protocol (STP)
One of the most used terms in network is LAN (Local Area Network). It’s a form of network that we encounter in our daily lives, at home, at work, study, and in various other areas of life. Unless wor…

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