David Bombal
David Bombal
Oct 15, 2020
#204: David Bombal: Never Use TFTP Or FTP!
7 min

Both TFTP and FTP are insecure protocols. Everything is sent in clear text - including all usernames and passwords. Don't use them.
Get the full Wireshark course for $9: bit.ly/wireshark9

Need help? Join my Discord: discord.com/invite/usKSyzb

Free Wireshark and Ethical Hacking Course: Video #7. Watch the entire series here: bit.ly/wiresharkhacking

Overview: 0:00
Start Capture: 0:48
Ping test: 1:00
Copy files using TFTP: 1:40
Filter for TFTP: 2:27
Follow UDP stream: 2:45
FTP intro: 3:53
Upload a file using FTP: 4:16
Filter for FTP: 4:35
Follow TCP stream: 4:47

Download TFTP pcapng file here: bit.ly/311IjXc

Download FTP pcapng file here: bit.ly/3iUlz1A

Don't use TFTP or FTP! It sends everything in clear text. That means that someone can capture everything you send on the network - including usernames and passwords.

In this course I'm going to show you how to capture packets from a network, how to capture passwords, replay voice conversations, view routing protocol updates and many more options.

Do you know network protocols? Do you know how to hack? Want to learn wireshark and have some fun with Ethical hacking? This is the course for you:

Learn Wireshark practically. Wireshark pcapng files provided so you can practice while you learn! There is so much to learn in this course:

- Capture Telnet, FTP, TFTP, HTTP passwords.
- Replay VoIP conversations.
- Capture routing protocol (OSPF) authentication passwords.
- Troubleshoot network issues.
- Free software.
- Free downloadable pcapng files.
- Answer quiz questions.

The course is very practical. You can practice while you learn! Learn how to analyze and interpret network protocols and leverage Wireshark for what it was originally intended: Deep Packet Inspection and network analysis.

Protocols we capture and discuss in this course include:
- Telnet
- VoIP

The History of Computing
The History of Computing
Charles Edge
The Evolution and Spread of Science and Philosophy from the Bronze Age to The Classical Age
Science in antiquity was at times devised to be useful and at other times to prove to the people that the gods looked favorably on the ruling class. Greek philosophers tell us a lot about how the ancient world developed. Or at least, they tell us a Western history of antiquity. Humanity began working with bronze some 7,000 years ago and the Bronze Age came in force in the centuries leading up to 3,000 BCE. By then there were city-states and empires. The Mesopotamians brought us the wheel in around 3500 BCE, and the chariot by 3200 BCE. Writing formed in Sumeria, a city state of Mesopotamia, in 3000 BCE. Urbanization required larger cities and walls to keep out invaders. King Gilgamesh built huge walls. They used a base 60 system to track time, giving us the 60 seconds and 60 minutes to get to an hour. That sexagesimal system also gave us the 360 degrees in a circle. They plowed fields and sailed. And sailing led to maps, which they had by 2300 BCE. And they gave us the Epic, with the Epic of Gilgamesh which could be old as 2100 BCE. At this point, the Egyptian empire had grown to 150,000 square kilometers and the Sumerians controlled around 20,000 square kilometers. Throughout, they grew a great trading empire. They traded with China, India and Egypt with some routes dating back to the fourth millennia BCE. And commerce and trade means the spread of not only goods but also ideas and knowledge. The earliest known writing of complete sentences in Egypt came to Egypt a few hundred years after it did in Mesopotamia, as the Early Dynastic period ended and the Old Kingdom, or the Age of the Pyramids. Perhaps over a trade route. The ancient Egyptians used numerals, multiplications, fractions, geometry, architecture, algebra, and even quadratic equations. Even having a documented base 10 numbering system on a tomb from 3200 BCE. We also have the Moscow Mathematical Papyrus, which includes geometry problems, the Egyptian Mathematical Leather Roll, which covers how to add fractions, the Berlin Papyrus with geometry, the Lahun Papyri with arithmetical progressions to calculate the volume of granaries, the Akhmim tablets, the Reisner Papyrus, and the Rhind Mathematical Papyrus, which covers algebra and geometry. And there’s the Cairo Calendar, an ancient Egyptian papyrus from around 1200 BCE with detailed astronomical observations. Because the Nile flooded, bringing critical crops to Egypt. The Mesopotamians traded with China as well. As the Shang dynasty from the 16th to 11th centuries BCE gave way to the Zhou Dynasty, which went from the 11th to 3rd centuries BCE and the Bronze Age gave way to the Iron Age, science was spreading throughout the world. The I Ching is one of the oldest Chinese works showing math, dating back to the Zhou Dynasty, possibly as old as 1000 BCE. This was also when the Hundred Schools of Thought began, which Conscious inherited around the 5th century BCE. Along the way the Chinese gave us the sundial, abacus, and crossbow. And again, the Bronze Age signaled trade empires that were spreading ideas and texts from the Near East to Asia to Europe and Africa and back again. For a couple thousand years the transfer of spices, textiles and precious metals fueled the Bronze Age empires. Along the way the Minoan civilization in modern Greece had been slowly rising out of the Cycladic culture. Minoan artifacts have been found in Canaanite palaces and as they grew they colonized and traded. They began a decline around 1500 BCE, likely due to a combination of raiders and volcanic eruptions. The crash of the Minoan civilization gave way to the Myceneaen civilization of early Greece. Competition for resources and land in these growing empires helped to trigger wars. Those in turn caused violence over those resources. Around 1250 BCE, Thebes burned and attacks against city states cities increased, sometimes by emerging empires of previously disassociated tribes (as would happen later with the Vikings) and sometimes by other city-states. This triggered the collapse of Mycenaen Greece, the splintering of the Hittites, the fall of Troy, the absorption of the Sumerian culture into Babylon, and attacks that weakened the Egyptian New Kingdom. Weakened and disintegrating empires leave room for new players. The Iranian tribes emerged to form the Median empire in today’s Iran. The Assyrians and Scythians rose to power and the world moved into the Iron age. And the Greeks fell into the Greek Dark Ages until they slowly clawed their way out of it in the 8th century BCE. Around this time Babylonian astronomers, in the capital of Mesopomania, were making astronomical diaries, some of which are now stored in the British Museum. Greek and Mesopotamian societies weren’t the only ones flourishing. The Indus Valley Civilization had blossomed from 2500 to 1800 BCE only to go into a dark age of its own. Boasting 5 million people across 1,500 cities, with some of the larger cities reaching 40,000 people - about the same size as Mesopotamian cities. About two thirds are in modern day India and a third in modern Pakistan, an empire that stretched across 120,000 square kilometers. As the Babylonian control of the Mesopotamian city states broke up, the Assyrians began their own campaigns and conquered Persia, parts of Ancient Greece, down to Ethiopia, Israel, the Ethiopia, and Babylon. As their empire grew, they followed into the Indus Valley, which Mesopotamians had been trading with for centuries. What we think of as modern Pakistan and India is where Medhatithi Gautama founded the anviksiki school of logic in the 6th century BCE. And so the modern sciences of philosophy and logic were born. As mentioned, we’d had math in the Bronze Age. The Egyptians couldn’t have built pyramids and mapped the stars without it. Hammurabi and Nebuchadnezzar couldn’t have built the Mesopotamian cities and walls and laws without it. But something new was coming as the Bronze Age began to give way to the Iron Age. The Indians brought us the first origin of logic, which would morph into an almost Boolean logic as Pāṇini codified Sanskrit grammar linguistics and syntax. Almost like a nearly 4,000 verse manual on programming languages. Panini even mentions Greeks in his writings. Because they apparently had contact going back to the sixth century BCE, when Greek philosophy was about to get started. The Neo-Assyrian empire grew to 1.4 million square kilometers of control and the Achaeminid empire grew to control nearly 5 million square miles. The Phoenicians arose out of the crash of the Late Bronze Age, becoming important traders between the former Mesopotamian city states and Egyptians. As her people settled lands and Greek city states colonized lands, one became the Greek philosopher Thales, who documented the use of loadstones going back to 600 BCE when they were able to use magnetite which gets its name from the Magnesia region of Thessaly, Greece. He is known as the first philosopher and in the time of Socrates even had become one of the Seven Sages which included according to Socrates. “Thales of Miletus, and Pittacus of Mytilene, and Bias of Priene, and our own Solon, and Cleobulus of Lindus, and Myson of Chenae, and the seventh of them was said to be Chilon of Sparta.” Many of the fifth and sixth century Greek philosophers were actually born in colonies on the western coast of what is now Turkey. Thales’s theorum is said to have originated in India or Babylon. But as we see a lot in the times that followed, it is credited to Thales. Given the trading empires they were all a part of though, they certainly could have brought these ideas back from previous generations of unnamed thinkers. I like to think of him as the synthesizers that Daniel Pink refers to so often in his book A Whole New Mind. Thales studied in Babylon and Egypt, bringing thoughts, ideas, and perhaps intermingled them with those coming in from other areas as the Greeks settled colonies…
31 min
IoT For All Podcast
IoT For All Podcast
IoT For All
Maturity and Adoption in the IoT Space | Avnet's Mike Powell & Avnet Abacus' Martin Keenan
In this episode of the IoT For All Podcast, Avnet Abacus’ Martin Keenan and Avnet’s Mike Powell join us to talk about the maturity of the IoT space, current obstacles to development and adoption of IoT solutions, and where they think the industry is going. Mike Powell is the Business Development Manager of Global IoT EMEA at Avnet. In his role, he works closely with clients to understand business objectives and find technology integrations to help them realize their goals. Martin Keenan serves as Technical Director at Avnet Abacus, where he is responsible for technical marketing strategy across IP&E, power, and battery products into key market segments. He has more than 15 years of experience in electronics and has occupied roles at RS Components, Avnet, and Altera. Interested in connecting with Martin Keenan or Mike Powell? About Avnet: Avnet is a global electronics distributor which is highly actively in high technology electronics and systems, providing components and solutions to our customers enabling them to compete with the very best. IoT is core to Avnet's growth, and we uniquely offer a range of products and services which solve customer business issues. About Avnet Abacus: Avnet Abacus is a European distributor of interconnect, passive, electromechanical, power supply, energy storage, wireless and sensor products. We offer cutting-edge technology from the world’s leading manufacturers, in-depth technical expertise, and unrivalled supply chain and logistics support.Key Questions and Topics from this Episode: (01:13) Intro to Martin and Mike. (03:50) Intro to Avnet and Avnet Abacus (08:56) How do you view the current state of IoT? (12:42) Where are you seeing the biggest challenges in terms of developing and adopting IoT? What advice do you have for companies starting their IoT journey? (17:25) How do you approach the challenges in communicating with less technical stakeholders? (21:26) What do you think has had the most impact on the increasing adoption of IoT? (27:34) What are the largest drivers to the success of IoT? What future barriers do you see emerging?
35 min
The Idealcast with Gene Kim by IT Revolution
The Idealcast with Gene Kim by IT Revolution
Gene Kim
The Principles and Practices Behind Team of Teams (Part 2)
This episode of The Idealcast features the second part of Gene Kim’s interview with Team of Teams coauthor and CrossLead CEO David Silverman and CrossLead Head of R&D Jessica Reif. In this episode, they take up the topic of how internal marketplaces are structures that can connect mid-level leaders to each other, helping allocate scarce resources to where they're needed most, which enables the further unlocking of capacities. They discuss challenges around the cost of change and the new skills that mid-level leaders need in order to survive and thrive in an era where being functionally excellent in one’s own silo is not enough. They further talk about the similarities between special operations and agile, especially comparing and contrasting terms that further concretize concepts the agile and DevOps community have held for years but struggled to name. And finally, they discuss where we go from here. BIO: David Silverman Entrepreneur, bestselling author, and former Navy SEAL, David Silverman is the Founder and Chief Executive Officer of CrossLead, Inc. Founded in 2016, CrossLead is a technology company whose leadership and management framework is used by leaders and companies around the globe. In 2015, David co-authored the New York Times bestselling leadership and management book Team of Teams: New Rules of Engagement for a Complex World. As a thought leader on culture change, high-performing teams, and leadership, he is a frequent guest speaker for business leaders and conferences around the globe. After his 13-year career as a Navy SEAL, David and a group of like-minded friends sought to reinvent the way the world does business in today’s dynamic environment. Based on their collective service in the world’s premier Special Operations Units, they devised a holistic leadership and management framework called CrossLead. Today, CrossLead is a leading framework for scaling agile practices across the enterprise. Implemented in some of the world’s most successful organizations, CrossLead drives faster time-to-market, dramatic increases in productivity, improvement in employee engagement, and more predictable business results. Prior to CrossLead, David co-founded the McChrystal Group where he served as CEO for five years. A graduate of the United States Naval Academy, David served as a Navy SEAL from 1998-2011. He graduated Basic Underwater Demolition School (BUD/S) Class 221 in 1999 as the Honor Man. David deployed six times around the world, including combat deployments to Iraq, Afghanistan, and Southeast Asia where he received three Bronze Stars and numerous other commendations. David serves on the advisory board of the Headstrong Project and is a member of the Young Presidents’ Organization. David lives in Washington, DC, with his wife, Hollis, and their two children. He maintains an active lifestyle as a waterman and runner. Twitter: @dksilverman Linkedin: https://www.linkedin.com/in/david-silverman-648035a/ Website: https://www.crosslead.com/ Jess Reif Jessica Reif is the Director of Research & development for CrossLead Inc, where she leverages the latest management research to develop new approaches to increasing business agility for CrossLead’s clients. She leads CrossLead’s education efforts and has developed training programs that have been delivered to over 20,000 leaders. Previously, Jessica served as a Product Delivery Manager for applied machine learning and engineering teams at Oracle Data Cloud, where her role was to facilitate agile development among a team-of-teams. Jessica holds a B.S. in Industrial and Labor Relations from Cornell University. In her free time, she enjoys golfing, baking, and hiking. Twitter: https://twitter.com/Jess_Reif Linkedin: https://www.linkedin.com/in/jessica-reif/ Website: https://www.crosslead.com/ YOU’LL LEARN ABOUT * How internal marketplaces are structures that can connect mid-level leaders to each other and allocate scarce resources to where they are needed most * Concept and terms found within the agile and special operations communities * What happens when the cost of change is intolerably high * New skills that midlevel need to survive and thrive to help organizations win RESOURCES * Team of Teams: New Rules of Engagement for a Complex World by General Stanley McChrystal, Tantum Collins, David Silverman and Chris Fussell * The Goal: A Process of Ongoing Improvement by Eliyahu M. Goldratt * Beyond the Goal: Eliyahu Goldratt Speaks on the Theory of Constraints (Your Coach In A Box) by Dr. Eliyahu M. Goldratt * Beyond The Phoenix Project: The Origins and Evolution Of DevOps by Gene Kim and John Willis * Peter Skillman’s Ted Talk: Marshmallow Design Challenge * Tom Wujec’s Ted Talk: Build a Tower, Build a Team * The (Delicate) Art of Bureaucracy by Mark Schwartz * Sooner Safer Happier by Jonathan Smart * IT Revolution’s virtual library * The Great Man Theory * Transformational Leadership and DevOps - Dr. Steve Mayner * Learning to be a Transformational Leader - Dr. Steve Mayner * The Structure of Scientific Revolutions by Thomas S. Kuhn * Paradigm shift * Isaac Newton by James Gleick TIMESTAMPS [00:08] Intro [01:55] What parallels Jessica Rief sees in the technology domain [08:56] What Steve Spear’s story means to David Silverman [14:47] Empowerment is not inherently a good thing [20:35] The Core, Chronic Conflict and the Marshmallow Challenge [28:28] Leaders, get comfortable with the unknown and trust somebody [37:39] Micromanagement in the technology space [41:11] IT Revolution’s new books and virtual library [42:39] Advice to micromanagers [46:34] Auditing your time appropriate to your level of leadership [48:28] Solving problems closer to the edge [53:20] The role of mid-level management [58:47] What skillsets are important to winning [1:07:22] Leadership theories [1:08:47] How Team of Teams has affected daily work [1:18:32] How to contact Jessica and David [1:19:40] Thomas Kuhn’s Paradigm shift [1:23:22] Newton’s three laws of motions [1:25:35] Outro
1 hr 26 min
Command Line Heroes
Command Line Heroes
Red Hat
Mark Dean: The Inventor Who Made the Computer Personal
Dr. Mark Dean has a superpower. He wasn’t born with it. He wasn’t exposed to high levels of radiation. It’s a power he learned from his father. And because of it, he was able to revolutionize the personal computer. David Bradley explains how in the 1980s, IBM had a reputation for building big, enterprise mainframes. No one believed IBM could make a competitive PC. But that’s exactly what “Project Chess” was tasked with creating. Tony Hey describes the monumental shift in strategy it was for IBM to enter the PC market. Pete Martinez and Dennis Moeller recount their days working with Mark on the skunkworks project. And how IBM's strategy for creating a computer in under a year changed the personal computing industry forever—opening it to innovators outside the walls of IBM. Mark Dean holds 3 of the 9 patents for the IBM 5150—the first IBM PC—including the revolutionary ISA bus. He then went on to lead the team that created the first gigahertz microprocessor, and eventually taught at the University of Tennessee. Mwamba Bowa shares her most cherished lesson from the inventor—how to cultivate that super power for herself. Clips of Mark Dean courtesy of Susan "Suze" Shaner, Principal of Sage Leadership Strategies, from a Comcast Cable interview, November 2009, and from the American Museum of Science & Energy featured talk, August 2019. If you want to read up on some of our research on Dr. Mark Dean, you can check out all our bonus material over at redhat.com/commandlineheroes. Follow along with the episode transcript.
27 min
Microsoft Cloud IT Pro Podcast
Microsoft Cloud IT Pro Podcast
Ben Stegink, Scott Hoag
Episode 204 – I’ve Never Heard It Referred To As The EEEU…
In Episode 204, Ben and Scott discuss the retirement timeline for Microsoft Edge Legacy and some things to be aware of with support for IE11, permission resets that might or might not be coming to a OneDrive for Business list near you, and how to get hands with Azure Arc if you don't have an on-premises machine to onboard. Sponsors Sperry Software – Powerful Outlook Add-ins developed to make your email life easy even if you’re too busy to manage your inbox ShareGate - ShareGate's industry-leading products help IT professionals worldwide migrate their business to the Office 365 or SharePoint, automate their Office 365 governance, and understand their Azure usage & costs Office365AdminPortal.com - Providing admins the knowledge and tools to run Office 365 successfully Intelligink - We focus on the Microsoft Cloud so you can focus on your business Show Notes Sizing up the iPhone 12 mini and 12 Pro Max Microsoft 365 apps say farewell to Internet Explorer 11 and Windows 10 sunsets Microsoft Edge Legacy Plan your deployment of Microsoft Edge Microsoft Removes EEEU Permission from OneDrive for Business Accounts Microsoft Teams multiple work-account sign-in: Not this year microsoft/azure_arc Onboard an Azure Windows Server VM with Azure Arc Onboard an Azure Linux Server VM with Azure Arc Single Node Data Exploration and ML on Azure Databricks About the sponsors Every business will eventually have to move to the cloud and adapt to it. That’s a fact. ShareGate helps with that. Our industry-leading products help IT professionals worldwide migrate their business to the Office 365 or SharePoint, automate their Office 365 governance, and understand their Azure usage & costs. Visit https://sharegate.com/ to learn more. Sperry Software, Inc focuses primarily on Microsoft Outlook and more recently Microsoft Office 365, where a plethora of tools and plugins that work with email have been developed. These tools can be extended for almost any situation where email is involved, including automating workflows (e.g., automatically save emails as PDF or automatically archive emails that are over 30 days old), modifying potentially bad user behaviors (e.g., alert the user to suspected phishing emails or prompt the user if they are going to inadvertently reply to all), and increased email security (e.g., prompt the user with a customizable warning if they are about to send an email outside the organization). Get started today by visiting www.SperrySoftware.com/CloudIT Intelligink utilizes their skill and passion for the Microsoft cloud to empower their customers with the freedom to focus on their core business. They partner with them to implement and administer their cloud technology deployments and solutions. Visit Intelligink.com for more info.
37 min
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