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Network Cabling
This article covers the commonly known Unshielded Twisted Pair (UTP) cable and shows how many pairs the UTP Cat5, Cat5e, Cat6 & Cat7 cables consists of, the colour coding they follow, the differe…
Linux - Unix
What is Server Virtualization? Server virtualization is the process of apportioning a physical server into several smaller virtual servers. During server virtualization, the resources of the ser…
Linux - Unix
This article was written thanks to our recent encounter of a HP DL120 G7 rack mount server equipped with a HP Smart Array B110i SATA Raid controller, needed to be installed with the Linux CentOS 6.0…
Windows Servers
Users working with Hyper-V Virtualization would be interested to know that Altaro is hosting a free webinar on the 25th of February 2016 at 4pm CET / 10am EST. Microsoft Cloud and Datacenter Manageme…
Network Protocols
Internet has been around in its current form since the 1980s. What started off as an in-house project in ARPA in 1958 rapidly expanded into what we know today as the Internet. IPv4 as a protocol has…
SASE & SD-WAN Networks
A lot has changed in how people work during the past twenty years. Co-working spaces, mobility, and the cloud now are common. Businesses are spread out and branch offices are empowered. This new fun…
Cisco Switches
This article covers basic and advanced configuration of Cisco Catalyst Layer-3 switches such as the Cisco Catalyst 3560G, 3560E, 3560-X, 3750, 3750E, 3750-X, 3850, 4500, 6500 , 9300, 9400 series, and…
Cisco Services & Technologies
One of the most difficult things for people who are starting out in a networking career is getting their hands on the equipment. Whether you are studying for Cisco certification or just wanting to te…
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, define all the resouce records and hosts availa…
Cisco Routers
For years now, Cisco has been developing its Security Device Manager (SDM) software. This web-based software is designed to help the less experienced users and administrators to work and configure va…
Cisco Routers
Network Time Protocol (NTP) is a vital service not only for Cisco devices but almost every network device. Any computer-based device needs to be accurately synchronised with a reliable time source su…
Windows Servers
One of the first things IT Administrators and IT Managers notice after a fresh installation of Windows 2012 Server is that there are no Desktop Icons apart from the Recycle Bin. Desktop icons such as…

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