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Linux - Unix

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…

Ethernet Protocol, CSMA/CD, Collisions

Integrating Fast Ethernet into 10MB Ethernet Netw…

Now that Fast Ethernet is here, the question becomes, "How do I start using it ?" Integrating Fast Ethernet into existing networks need not be done all at once. Here are some aspects of 100Mbps impl…

Network Protocol Analyzers

How to Perform TCP SYN Flood DoS Attack & Detect…

This article will help you understand TCP SYN Flood Attacks, show how to perform a SYN Flood Attack (DoS attack) using Kali Linux & hping3 and correctly identify one using the Wireshark protocol…

Routing

Link State Routing Protocols

Link State routing protocols do not view networks in terms of adjacent routers and hop counts, but they build a comprehensive view of the overall network which fully describes the all possible routes…

Linux - Unix

Finding More Information On The Linux Operating S…

Since this document merely scratches the surface when it comes to Linux, you will probably find you have lots of questions and possibly problems. Whether these are problems with the operating system…

Windows Servers

How to Install and Configure Windows 2012 DNS Ser…

Our previous article covered introduction to the Domain Name System (DNS) and explained the importance of the DNS Server role within the network infrastructure, especially when Active Directory is in…

TCP - UDP Protocol Analysis

TCP Header Anaylsis - Section 6: TCP Options

The TCP Options (MSS, Window Scaling, Selective Acknowledgements, Timestamps, Nop) are located at the end of the TCP Header which is also why they are covered last. Thanks to the TCP Options field we…

Network Protocols

Introduction To The ISDN Protocol

ISDN (Integrated Services Digital Network) is a digital telephone standard designed to replace analogue connections by utilising ordinary copper wires that are used in standard analogue telephone sys…

Cisco CallManager-CCME

How to Register Cisco IP Phones & Connect CallMan…

This article shows how to connect Cisco's Unified CallManager with a CallManager Express system (including UC520, UC540 and UC560) via H323 gateway, allowing the two systems to route calls between ea…

Ethernet Protocol, CSMA/CD, Collisions

Differences Between Classic Ethernet And Fast Eth…

The two primary areas for concern when upgrading the network from 10Mbps to 100Mbps are cabling and hubs. As discussed on the Fast Ethernet Introduction page, in Fast Ethernet twisted pair cabling ne…

Cisco Services & Technologies

Install & Fix Cisco VPN Client on Windows 10 (32…

This article shows to how correctly install Cisco VPN Client (32 & 64 bit) on Windows 10 (32 & 64 bit) using simple steps, overcome the ‘This app can’t run on this PC’ installation error, plu…

Cisco Services & Technologies

Renewing Cisco Certifications without sitting for…

Without a doubt, Cisco certifications and specializations are among the most popular vendor certifications in the IT industry, and earning them doesn’t come easy. Anyone who’s achieved a Cisco certif…