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Windows 2016 Server Licensing Explained – Free We…
With Windows 2016 Server already making its way into data centers Windows 2016 Server Licensing is becoming a very hot topic. Windows 2016 Server is jam-packed with a number of advanced features incl…
IP Phone 7945, 7965, 7975 Factory Reset Procedure…
This article explains how to reset your Cisco 7945, 7965 and 7975 IP phone to factory defaults, and how to upgrade the firmware to the latest available version. We also provide necessary information…
How To Secure Your Linux Server or Workstation -…
Below are some of the most common recommendations and method to effectively secure a Linux Server or Workstation.
Boot Disk
One of the foremost requisites of a secure Linux server is the boot disk…
How to Detect SYN Flood Attacks with Capsa Networ…
This article explains how to detect a SYN Flood Attack using an advanced protocol analyser like Colasoft Capsa. We’ll show you how to identify and inspect abnormal traffic spikes, drill into captured…
Cisco Unity Express Installation & Setup - ISM-SR…
Unity Express is a popular add-on for Cisco Unified Communication Manager Express (CallManager Express) and Cisco Unified Communication Manager (CUCM), adding advanced auto attendant functionality wi…
How to Fix Cisco VPN Client Error 51 – Unable to…
Apple Mac OS X users are frequently faced with the Cisco VPN Client Error 51 - Unable to Communicate with the VPN Subsystem as shown in the screenshot below:
When this error is produced, users wil…
CallManager Express GUI Software Installation & C…
This article covers the installation of Cisco's CallManager Express on Cisco routers. Here you'll find the necessary installation commands, files to download, router's HTTP server configuration comma…
802.3 Fast Ethernet (100 Mbit/Sec) Model
Here we see a logical drawing of the Fast Ethernet Data Link Layer sublayers. Data is passed down from the upper layers (such as TCP/IP or Novell Netware) to the LLC sublayer. From there it is passed…
TCP Header Anaylsis - Section 7: TCP Data Payload…
Finally, the last page of our incredible TCP Analysis. As most of you would expect, this section is dedicated to the DATA section that follows the TCP Header.
The Data Section
The following diagram…
Why Use Linux?
The first question is - what are the benefits of using Linux instead of Windows? This is in fact a constant debate between the Windows and Linux communities and while we won't be taking either side…
MPLS vs. SD-WAN vs. Internet vs. Cloud Network. C…
The Wide Area Network (WAN) is the backbone of the business. It ties together the remote locations, headquarters and data centers into an integrated network. Yet, the role of the WAN has evolved in r…
Ensuring Compliance and Business Continuity in a…
In the wake of digital transformation, the work landscape as we know it has undergone a dynamic shift. People can now work from home, from the office, or anywhere with a stable internet connection. L…
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