Author name: Andrew Walding

My short bio can be viewed here: https://www.evernote.com/l/AKglxPOzlV9E7LHKvPsGzgs-SY3McII8E24

CSI-SP-001 – POTS to Pipes 1

  The Fundamentals of TCP/IP for Service Provider Managers / Engineers / Marketing Course Description: Attended by thousands of students around the country already, this one-day course is jammed with information and learning. This course focuses on the basics of the Internet, the OSI model, IP Addressing and subnetting, IP Routing, TCP and UDP operation

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What is the ‘netstat’ command, and what can it do?

The netstat (short for network statistics) command is a powerful diagnostic tool used to display various network-related information on a computer. It’s available on Windows, Linux, and macOS systems (though on newer systems it is sometimes replaced or supplemented by ss in Linux or Get-NetTCPConnection in Powershell). netstat helps you: Some useful applications for the

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What is the ‘arp’ protocol and the ‘arp’ command, and how can I use it?

Let’s answer the questions, but before I do, you can watch my ARP lesson on Youtube here: https://youtu.be/aD_caJxD7nY and look at the lessons in the playlist:https://www.youtube.com/playlist?list=PL-nDeWT9WTjFT1syEIGsLTObjkx4XDOUt Check out some further ARP Resources: Our free ARP course at Udemy Our ARP custom profile for Wireshark Our chapter on ARP at the Online School Reference Library OK –

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Using a Dynamic DNS Service Instead of a Public IP

If you have a web/email server connected to the Internet that you want other to reach, that server must have a public IP address.  Most Internet users don’t even try to remember the IP addresses of sites they use, instead they use the Universal Resource Locator system of typing www.cellstream.com or something like this into

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Some Basic Troubleshooting Tips for the PC/Networking

Here are some fundamental PC Troubleshooting Tips.  We cant cover everything here, but if something below helps, great! PC Won’t Boot Into Windows Try “Safe Mode” FirstWhen your PC just won’t boot into Windows at all, you’ll probably want to start off with Safe Mode—use the F8 key right when the system starts up to

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Determining What is Connected to a Customer LAN or WLAN with ColaSoft MAC Scanner

Here is a good question: At a recent POTS to Pipes you told us of the story of the customer that was upset with his local telephone company due to his internet being really slow, etc., and you had went through some steps that you could use to verify how many appliances a person actually

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Where is the Internet Filtered or Censored?

I have always said, everywhere – at least at some level. It typically involves governments or authorities blocking or restricting access to certain content, websites, or services. Here’s a summary of where and how it’s done: Countries with Extensive or Systematic Internet Censorship: Highly Censored (Systematic Filtering & Control) Substantial Filtering or Selective Censorship Moderate

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