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Articles:
The DNS Protocol - Part 1: Introduction
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Network Fundamentals
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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 ar…
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This section will help you understand how the DNS queries work on the Internet and your home network. There are two ways to use the domain name syste…
Network Address Translation - NAT
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The previous page (Static NAT - Part 1) helped us understand what exactly happens with Static NAT and how it works, and we saw a few examples of how…
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This section contains one of the most well-known fields in the TCP header, the Source and Destination port numbers. These fields are used to specify…
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Netflow Articles:
Netflow: Monitor Bandwidth & Network Utilization…
Monitoring network traffic & bandwidth usage via Netflow is mandatory for any type and size network. Gaining visibility into user traffic, applic…
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This article will cover the basics of Netflow, including its use cases, Netflow supported devices, Netflow history, and variants. We’ll also dive int…
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Our previous article explained the purpose of Link State Update (LSU) packets and examined the Link State Advertisement (LSA) information contained within…
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When working with Cisco equipment that has multiple ip interfaces, a common problem engineers are faced with is trying to successfully tftp to or from the…




