John Breth (JB) | CyberInsight® on YouTube Profile picture
Founder (@jbc_sec) | IT/Cyber Architect | Author ▶️ https://t.co/tQe0lylvuo Maine born | CyberSec Pitbull USAF UMUC JHU #AWSCommunityBuilder #CiscoChampion
Feb 6, 2023 7 tweets 3 min read
How do you connect different networks in #Azure? The primary was is through VNET peering. In this thread, I'm going to do a quick breakdown to help you understand this cloud magic! Image Azure VNET Peering allows you to connect two Azure virtual networks (VNETs) creating a secure and fast connection between the two.

This allows communication between resources in the two VNETs without going through the public internet but instead over the Microsoft backbone!
Oct 4, 2022 22 tweets 12 min read
Everyone is posting "If I had to start over in tech" posts the past few days.

Almost all the tech vets have cloud as one of the technologies they said they would focus on.

I couldn't agree more!

So if you want to start...here's 20 cloud vids (AWS/Azure/CCSP) to help you!!!🧵 We're going to start with AWS first, since they are the mostly widely used, have the most services, and what I have the most experience in, #AWSCommunity 😂

You should set up a free account and if you don't know how to, I got you!

Aug 17, 2022 12 tweets 4 min read
Someone asked me about creating CCNA labs and if it was worth spending $500 on equipment. I'm going to say no (unless you really want to get a bunch of gear), but I'm going to give you some CCNA lab options from free to $500+ in this thread🧵 First option is free and is a lab emulation software from Cisco called Packet Tracer. This is great and runs on your computer. Should be more than fine for CCNA (or Net+) studies. There are some limitations to what you can do with advanced configs.

learningnetwork.cisco.com/s/packet-trace…
Dec 15, 2021 8 tweets 7 min read
I saw a tweet from @_jayprimo about wishing he had some cheat sheets when learning cyber tools. So, I wanted to make this thread for new folks who want to learn about some of the most used cyber tools (free labs/walkthroughs/command cheat sheets)👇 NMAP is used for discovering hosts/services on a network. Normally first step in enumeration by pentesters.

@RealTryHackMe has a free lab, here is my walkthrough video of the room (link to the room is in the vid des) and a handy syntax sheet I use a lot!

Sep 4, 2021 9 tweets 8 min read
Had a few folks ask about how to get hands on experience when starting to get into tech/cyber. So this thread some of my recommendations of FREE labs/software for networking, Linux, Windows, cybersecurity, and coding that I have used. I'm going to plug my own stuff first 😂 I have various playlists devoted to lab walkthroughs for networking (Net+/CCNA), Linux, cyber defense, and offensive cyber labs. The majority using free tools for you to follow along🤝
youtube.com/c/cyberinsight
Feb 7, 2021 9 tweets 2 min read
Random thoughts on planning a small office relocation. This is off the top of my head. So might change some steps IRL. Step one is going to be updated asset list/documentation/cable connections. What devices/software/data currently exists and what will need to be moved /1 Figure out what IT closets/cabling options are in the new spot and plan accordingly and create transition documentation(cable plan, rack layouts, updated diagrams if needed . Pre-run/label as much as you can. Make sure you test these connections(cable drops to comms closets). /2
Aug 21, 2020 12 tweets 7 min read
I've been seeing some tweets about #BlueTeam and documentation and diagrams. Diagrams are an important part of the engineering process! So, I figured I'd do a little diagram breakdown for folks wondering what are some useful types of diagrams. High level diagrams provide a non-technical overhead perspective of the environment. If you are at all familiar with DoDAF, this would be like your OV-1 diagram. These should tell a high level story and be easily explainable to someone who is new/and or non-technical.
Aug 14, 2020 13 tweets 7 min read
For fun 😬 let's chat about network ACL's and a high level approach to securing your network. The purpose is to provide multiple levels of protection (i.e. defense in depth).

4 main ACL's to talk about:
✅Premise ACL's
✅Inter-zone ACL's
✅Intra-zone ACL's
✅Host-based ACL's Image Let's start on the outside with Premise ACL's. These reside on your most outward facing network devices (probably a router or switch) where your Internet circuits are plugged into. These ACL’s would knock down a large amount of unwanted SPAM packets that flood the Internet.
Jan 8, 2020 22 tweets 6 min read
Have you implemented active defense strategies in your environment? Do you know what active defense is vs. normal security monitoring? Let's talk about some technologies/generic strategies.

Shout out to @strandjs @BHinfoSecurity @ActiveCmeasures @corelight_inc
#30DaysofThreads Active defense is a strategy used that doesn’t just wait for an adversary to attack and then solely block or react. Active defense can instead be seen as an engaged defense that is actively lying in wait. Think of tripwires implemented to attract and alert on malicious actions.
Jan 5, 2020 11 tweets 4 min read
I've seen tweets recently from @gabsmashh and @TC_Johnson about wanting to nail down subnetting. I threw this little diagram together. For me, leaning to subnet took a combination of memorization and finally finding the right explanation that made it click.

#30DaysofThreads The thing that really clicked for me was understanding that each type of subnet (/24 for instance) is made up of multiple smaller subnets. And the address assignments or boundaries of these smaller subnets cannot change. You can't make a /26 network that bridges two /25's.