Secure Shell (SSH) Overview and Configuration

Secure Shell or SSH is a protocol designed for connecting to network devices securely over an IP network. SSH is an application that operates on TCP Port 22 at the network layer (layer 3). It replaces insecure terminal emulation protocol such as Telnet  🤔

I just dropped a new video on my YouTube channel.  In this video, I provide a high-level overview of SSH in about 5 minutes.  I then jump right into the CLI configuration and walk you through how to get SSH setup on any Cisco router/switch from scratch  🤓

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What is Syslog? | Overview & Configuration | Part 1

Do you know how network devices keep track of all the events locally occurring on the device?  🤔

The answer is System Logging or Syslog.  I just dropped a new video on my YouTube channel, and in this video, I provide a high-level overview of Syslog in less than 9 minutes.  Syslog is a logging protocol that allows network devices to generate messages for events and status changes on local devices.  Syslog has been around since the 1980s and was designed by Erica Allman.  Syslog uses UDP port 514.  Syslog messages are generated and stored locally on a network device.  However, Syslog messages can be sent to a centralized Syslog Server  🤓

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SNMP Explained

SNMP stands for Simple Network Management Protocol.  SNMP was first introduced way back in 1988.  SNMP was originally designed to be a network management and network monitoring protocol.  The network management aspect of SNMP never took off, and SNMP, over time, became one of the mainstream network monitoring protocols.  🤔

I just dropped a new video on my YouTube channel, and in this video, I provide a high-level overview of SMTP in less than 7 minutes.  I explain terms like MIB, NMS, Traps, Polling, etc.  If you want to become a network monitoring ninja, you got to watch this video  🤓

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NTP Overview & Configuration - Part 1

NTP stands for Network Time Protocol.  NTP is responsible for synchronizing the clock on computer systems and networks.  NTP has been around since the mid-1980s and was designed by David L. Mills of the University of Delaware.  Intrigued?  Want to know what's under the hood?  🤔

I just dropped a new video on my YouTube channel, and in this video, I provide a high-level overview of NTP and then walk you through step-by-step how it works.  This video is part one of the two-part series.  So stay tuned  🤓

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How DNS Works Step by Step

DNS stands for Domain Name System, and without DNS internet wouldn't exist.  So what exactly is DNS, and how does it work?  🤔

I am glad you asked.  In this video, I will provide a high-level overview of DNS and then walk you through step-by-step how it works  🤓

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CCNA Course for Beginners - Full Course

First, I wish you a fantastic new year filled with mental, physical, spiritual and financial success.  As my gift to you, I launched my CCNA course on YouTube to help you kickstart 2023 in style.  This course is comprised of two videos, over 10 hours each.  It took me over a year to put this course together, so I hope you enjoy it 😊

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DHCP Explained | DORA | DHCP Relay Agent

Have you ever wondered how devices get their IP address? Does it all seem like magic? 🤔

In this video, I intend to demystify this mystery. First, I give you a high-level overview of DHCP (Dynamic Host Configuration Protocol) and explain the DHCP DORA process. Finally, I wrap up with the conceptual understanding of DHCP Relay Agent 🤓

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What is HSRP? | Overview & Configuration

Have you ever wondered what an HSRP is and how it's configured? 🤔

If you have, you have come to the right place. In this video, I will give you a high-level overview of HSRP and then jump right into the CLI configuration. So you can walk away with practical implementation knowledge of HSRP. If you are ready, let's roll 🤓

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IPv4 to IPv6 Transition

Have you been tasked with implementing IPv6, and is that keeping you up at night? 🤔

If yes, you have come to the right place. In this video, I am going to share a couple of IPv4 to IPv6 migration strategies with you, including configuration, in under 3 minutes. If you are ready, let's roll 🤓

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Overview of Wireless LAN Tech

Did you know how Radio Frequency (RF) is linked to Wi-Fi technology? Do you know how wireless LAN tech works? 🤔

I just dropped a new video on my YouTube channel, and in this video, I address these questions in under 10 minutes. I provide a high-level overview of Wi-Fi technology and the basics of how wireless tech works under the hood 🤓

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Static Routing Overview & Configuration

Do you know how static routing works? 🤔

I just dropped a new video on my YouTube channel and in this video, I provide a high-level overview of static routing. I then jump straight into CLI and show you how to configure static routing on a Cisco router or a switch 🤓

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Link State vs Distance Vector Routing Protocols

Do you know the difference between Link State & Distance Vector routing algorithms? 🤔

In this video, I provide a high-level overview of the difference between Link State & Distance Vector routing algorithms. As a bonus, I also cover a Hybrid algorithm. All that in less than 3 minutes. 🤓

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How Routing Table Works

Do you ever wonder how a routing table works? 🤔

If you do, you are not alone. In this video, I cover the following:

  1. I explain at a high level how the routing table works. I walk you through the router's decision-making process.

  2. I then get into Cisco Administrative Distance values.

  3. Next, I compare various Interior Gateway Protocols (IGP) such as RIPv2, EIGRP & OSFP.

  4. Finally, I wrap it up with a quick CLI explanation of the "Show IP Route" command. And the best part, I cover all that in less than 7 minutes.

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Main Difference between Private IP and Public IP Address

Do you find the topic of Private IP vs. Public IP addressing complicated?  🤔

If so, you are not alone.  In this video, I demystify this concept in about  4 minutes.  I provide a high-level overview of Private IP addressing and the key difference between the Private IP and Public IP address space  🤓

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Router on a Stick Overview and Configuration

Did you know that router on a stick is related to Inter-VLAN routing?  🤔

In this video, I explain this concept in less than 9 minutes.  I provide a high-level overview of the router on a stick and then jump right into the CLI configuration  🤓

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What's the difference between Hub and Switch?

Do you know the difference between a hub and a switch? 🤔

I just dropped a new video on my YouTube channel and in this video, I compare a hub vs. a switch vs. a multilayer switch (MLS) at a high level in less than 5 minutes. As a bonus, I also discuss the difference between a collision domain and a broadcast domain 🤓

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