David Bombal
David Bombal
Want to learn about IT? Want to get ahead in your career? Well, this is the right place!
On this channel, I discuss Python, Ethical Hacking, Networking, Network Automation, CCNA, Virtualization and other IT related topics.
This YouTube channel has new videos every week! Subscribe for technical, detailed, no fluff content.
David’s details:
Discord: https://discord.com/invite/usKSyzb
Twitter: https://www.twitter.com/davidbombal
Instagram: https://www.instagram.com/davidbombal
LinkedIn: https://www.linkedin.com/in/davidbombal
Facebook: https://www.facebook.com/davidbombal.co
Website: http://www.davidbombal.com
YouTube: https://www.youtube.com/davidbombal
All the best!
David
On this channel, I discuss Python, Ethical Hacking, Networking, Network Automation, CCNA, Virtualization and other IT related topics.
This YouTube channel has new videos every week! Subscribe for technical, detailed, no fluff content.
David’s details:
Discord: https://discord.com/invite/usKSyzb
Twitter: https://www.twitter.com/davidbombal
Instagram: https://www.instagram.com/davidbombal
LinkedIn: https://www.linkedin.com/in/davidbombal
Facebook: https://www.facebook.com/davidbombal.co
Website: http://www.davidbombal.com
YouTube: https://www.youtube.com/davidbombal
All the best!
David
Episodes
Mentioned books

Aug 15, 2019 • 12min
#71: Visio Alternative? GNS3 interactive topology diagrams
Is this a replacement for Visio? GNS3 now allows you to create interactive topology diagrams. You can create topologies consisting of both physical and virtual devices and get them to communicate with each other.
Will gns3 replace visio? How will you make the most use of this new feature in gns3?
#gns3 #visio #ccna

Aug 5, 2019 • 7min
#70: Boson ExSim CCNA Giveaway
Want to win a copy of the Boson ICND1 or ICND2 ExSim Exam Simulation software? Now's your chance!
Competition link: http://bit.ly/2GJLrwV
Boson ExSim-Max Practice Exams: http://bit.ly/BosonExSim
Boson home page: http://bit.ly/2LX27oL
Boson NetSim: http://bit.ly/BosonNetSim
#ccna #boson #exsim

Aug 2, 2019 • 55min
#69: Python and Jinja2 Cisco Network Automation
CSV files, Jinja2 templates, python and Network Automation! Wow - that is a lot! But Hank Preston demonstrates how to use all of those in this video.
Menu:
01:11 - Introduction
02:29 - Spreadsheet conversion
04:19 - Importing using Python
13:41 - What are the advantages of using Jinja2 templates?
16:35 - Skills that Network Engineers should learn?
19:00 - The working template
32:09 - Exporting to a text file
35:22 - Using a script
37:46 - How would I turn this into something that configures a device?
51:18 - Should I use CSV/YAML/JSON?
Links:
Video 1 in series: https://youtu.be/PB9D4RqBaQw
Video 2 in series: https://youtu.be/23hPg88pZBo
Start Now Page on Devnet: http://bit.ly/2WBjb5v
NetDevOps Live Episode on Python Libraries including CSV: http://bit.ly/2VjbGP4
Coding Fundamentals Learning Labs: http://bit.ly/2vU1BO8
Network programmability Basics Video Series covering CSV: http://bit.ly/2JzlbY4
Jinja2 template video: https://youtu.be/ARFU73tah8A
#python #jinja2 #devnet

Jul 25, 2019 • 6min
#68: GNS3 Docker Persistent Containers
GNS 2.2 now supports additional persistent volumes for Docker containers. This means you won't keep losing your installed applications and work! Great new feature!
GNS3 2.2 New Features: http://bit.ly/2LnId5Q
Download GNS3 2.2 here: https://github.com/GNS3/gns3-gui/releases
#gns3 #docker #gns3docker

Jul 19, 2019 • 36min
#66: Cisco VIRL 2: Massive New changes!
Massive changes coming in VIRL 2: No VM Maestro client, no OpenStack, entirely new middleware, new GUI, HTML5 client - lots of new and exciting changes!
Menu:
00:45 - Overview of Changes
02:55 - Introduction
03:20 - API Documentation
04:20 - Python client library
05:15 - OpenStack
06:50 - The Dashboard and new components
09:15 - Boot progress monitoring
10:40 - Device limitation
12:00 - Advice for sending Cisco requests
12:38 - Demo for interacting with console
17:04 - Web browser application
19:18 - Installation
19:35 - VNC
22:19 - Simulate and packet capture features
23:30 - Breakout Utility
26:09 - Do you need to run a VPN client?
28:45 - Release date?
29:25 - VIRL compatibility and demo
virl is CISCO'S POWERFUL, EASY-TO-USE, AND EXTENSIBLE NETWORK MODELING AND SIMULATION ENVIRONMENT.
- Build highly-accurate models of existing or planned networks.
- Design, configure, and operate networks using authentic versions of Cisco's network operating systems
- Build using common platforms like IOSv, IOSv Layer-2, IOS-XRv, NX-OSv, CSR1000v and ASAv. All Included
- Integrate 3rd-party virtual machines, appliances, VNFs, and servers.
- Connect real and virtual networks to form high-fidelity development and test environments.
- Design and test anywhere - VIRL is portable!
#virl #ciscovirl #virl2

Jul 18, 2019 • 4min
#65: GNS3 Symbols
GNS3 symbols are now built into GNS3 2.2! You can access custom and affinity symbols directly from within GNS3.
GNS3 Custom Symbols: https://youtu.be/51zaAHhdgzQ
GNS3 2.2 New Features: http://bit.ly/2LnId5Q
Download GNS3 2.2 here: https://github.com/GNS3/gns3-gui/releases
You can switch between different builtin symbols themes in the GNS3 preferences:
Classic symbol theme
Affinity square blue
Affinity square gray
Affinity square red
Affinity circle blue
Affinity circle gray
Affinity circle red
#gns3 #gns3symbols #gns3icons

Jul 16, 2019 • 9min
#64: GNS3 2.2 New Feature: Link Status Detection
Fantastic new feature is available in GNS3 2.2! Cisco IOS routers and switches (and others) can detect the status of interfaces - is the cable plugged in? Or not? Has the link been suspended?
GNS3 2.2 New Feature: Detect when a link is plugged/unplugged for Qemu VMs.
Qemu VMs will be informed when a link is plugged or unplugged or even when suspended. This should be really useful when testing redundancy scenarios, protocol convergence etc.
This will really help with gns3 labs in future!
#gns3 #gns3tutorial GNS3VM

Jul 9, 2019 • 13min
#63: tshark and Termshark tutorial: Capture and view wireshark captures in a console
Get the course for $10 on Udemy: http://bit.ly/2IXZnn8 or GNS3 Academy: http://bit.ly/2J4PzIb
This is a tshark and Termshark tutorial: It is now possible to capture and view Wireshark captures directly in a console window. No need for a graphical user interface (GUI) - you can do all of this directly within a Linux terminal or console.
tshark and Termshark installation:
==============================
tshark:
apt-get install tshark
Termshark:
wget https://github.com/gcla/termshark/releases/download/v1.0.0/termshark_1.0.0_linux_x64.tar.gz
tar -xf termshark_1.0.0_linux_x64.tar.gz
cd termshark_1.0.0_linux_x64
install termshark /usr/local/bin
How to use:
tshark -w tshark1.pcap
termshark -r tshark1.pcap
Help:
termshark UserGuide:
https://github.com/gcla/termshark/blob/master/docs/UserGuide.md
Course overview:
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
- FTP
- TFTP
- HTTP
- VoIP
- OSPF
- EIGRP
- DNS
- ICMP
Who this course is for:
Network Engineers
Network Architects
Ethical hackers
Networking Students
#wireshark #termshark #tshark

Jul 8, 2019 • 14min
#62: GNS3 IOS Images: Build a Cisco VIRL gns3 network
In this video I show you how to download Cisco IOS images and Cisco VIRL images to run IOSv, IOSvL2 in GNS3 2.2. I can only show you LEGAL ways of doing this. Please DO NOT ask for images that I am unable to provide.
Previous videos in this series:
Video 1: https://youtu.be/LvLGEKD-oqA
Video 2: https://youtu.be/R6fSub4ycTk
Video 3: https://youtu.be/anYw9pbAUiI
Want to know to install, configure and setup GNS3 2.2? Well, these videos show you. In my first video, I show you how to download the components you require and how to install the GNS3 GUI on Windows 10. We build a basic network with GNS3. In the second video I show you how to use the GNS3 2.2 Web-UI and in this video I show you how to integrate the GNS3 VM with the GNS3 GUI. In the next video I show you how to build a network using Cisco VIRL IOS images.
Thank you Jeremy for all your hard work creating and updating GNS3!
#gns3 #gns3virl #gns3ios

Jul 8, 2019 • 10min
#61: GNS3 VM: How to integrate with GNS3 2.2
How do you integrate the GNS3 VM with the GNS3 GUI? This video shows you how.
Video 1: https://youtu.be/LvLGEKD-oqA
Video 2: https://youtu.be/R6fSub4ycTk
Video 4: https://youtu.be/zUBaLnQwbpA
Want to know to install, configure and setup GNS3 2.2? Well, these videos show you. In my first video, I show you how to download the components you require and how to install the GNS3 GUI on Windows 10. We build a basic network with GNS3. In the second video I show you how to use the GNS3 2.2 Web-UI and in this video I show you how to integrate the GNS3 VM with the GNS3 GUI. In the next video I show you how to build a network using Cisco VIRL IOS images.
Thank you Jeremy for all your hard work creating and updating GNS3!
#gns3 #gns3vm #gns3vmware


