Post Views: 12,962 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
CSI-SP-001 – POTS to Pipes 1 Read More »
Post Views: 1,743 The following lab exercise is how to create an IPsec VPN on Cisco IOS. We originally created this lab as part of one of our courses, and we hope you find it useful. Lab Preparation This lab is designed to help you learn the basics of IPSec VPN’s and how Service Providers
An IPsec VPN Lab Exercise Read More »
Post Views: 2,441 This article discusses our tips on “Parenting the Internet” from a technical perspective. What we mean is, that parents must carefully control the Internet usage in the home, especially when minors are involved. The Internet must be actively parented as we will discuss further. Also look for additional information in the following
Parenting the Internet Read More »
Post Views: 12,654 Practical IP Quality of Service, Classification, Policing, Shaping, Queuing, and Scheduling 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Quality of Service becomes important whenever different types of network traffic compete for limited bandwidth, delay-sensitive applications must be protected, or
CSI-HO-015 – Hands-On Quality of Service (QoS) Read More »
Post Views: 7,118 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
What is the ‘netstat’ command, and what can it do? Read More »
Post Views: 12,265 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
What is the ‘arp’ protocol and the ‘arp’ command, and how can I use it? Read More »
Post Views: 1,445 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
Using a Dynamic DNS Service Instead of a Public IP Read More »
Post Views: 1,439 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
Some Basic Troubleshooting Tips for the PC/Networking Read More »
Post Views: 1,672 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
Determining What is Connected to a Customer LAN or WLAN with ColaSoft MAC Scanner Read More »
Post Views: 1,632 We recently received the following query via email (some content edited): I heard you speak a few weeks back and have a few questions regarding the “How to Parent the Internet” segment of your presentation. Is there a certain software required for blocking offensive content? Also, is there a standard way to
Blocking Offensive Web Content Read More »
Post Views: 1,305 There is no one “great” answer to this question. Usually saving disk space also maximizes performance of your computing platform. We fundamentally recommend: a) proper maintenance (see other tips below) and b) the occasional ‘spring cleaning’ (as also discussed below) combined with the c) use of a utility to clean your unused
How can I save Disk Space? Read More »
Post Views: 1,521 Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School It should be no surprise to anyone reading this article that the next generation IPv6 protocol is being exploited by hackers and attackers just like its predecessor
The Security Weaknesses of IPv6 Read More »
Post Views: 1,525 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
Where is the Internet Filtered or Censored? Read More »
Post Views: 1,573 I am not a very political person. However, I was fascinated by the following. The transcript below was copied from TED Talk – Omar Ahmad: Political change with pen and paper. It is inspiring and insightful…. One of the things that defines a TEDster is you’ve taken your passion, and you’ve turned
How to Affect Politicians Read More »
Post Views: 6,209 Many of you associated with CellStream already know that we have been busy over the past several months renovating our web presence by adding the CellStream Intranet site. I thought I would write a few lines about it so folks would know what has been going on, become aware of great new
The CellStream Intranet Story – Visitors Welcome! Read More »
