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John Breth (JB) | CyberInsight® on YouTube Profile picture
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Feb 6 • 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!
There are two types of VNET peering - "Global VNET Peering" & "Regional VNET Peering." Global VNET Peering enables connectivity between virtual networks in different regions. ImageImage
This is great, except it doesn't scale well when you have multiple VNets to connect, because the routing between them ins't transitive (a VNet doesn't know about other non-connected VNet networks). That means to enable full connectivity you need a full mesh architecture😱

But...
A Hub and Spoke design is a popular architecture in Azure cloud computing that allows you to centralize network connectivity using a "hub" VNET, which acts as a central network for connecting multiple "spoke" VNETs. Image
The hub VNET acts as a centralized point of connectivity for the spoke VNETs, enabling communication between all resources in the network.

Additionally, using VNET peering in a hub and spoke design allows you to apply network security and access policies at the hub level!!!
If you want to learn hands-on about how to implement Azure VNet Peering, check out my latest lab walkthrough!🤝

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More from @JBizzle703

John Breth (JB) | CyberInsight® on YouTube Profile picture
Oct 4, 2022
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!

Most folks start with the #AWS CCP, it's their foundational certification. It's a solid spot to become familiar with their terminology and services.

Bonus points if you do labs along with it to help you learn.

Here's my review of the exam/resources

Read 22 tweets
John Breth (JB) | CyberInsight® on YouTube Profile picture
Aug 17, 2022
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…
If you find you need some more advanced features (like studying CCNP stuff), you can use the Cisco DevNet Cisco Modeling Labs Enterprise sandbox. This is a free version of CML, but you have to reserve time and the configs aren't saved in the cloud.

developer.cisco.com/docs/sandbox/#…
Read 12 tweets
John Breth (JB) | CyberInsight® on YouTube Profile picture
Dec 15, 2021
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!

Netcat is used to transfer files/make remote backdoor connections. Used with other pentesting tools like metasploit (we'll hit that too).

Used in a bunch of free @tryhackme rooms, here is one of my walkthroughs with it. @SANSInstitute cheat sheet!

Read 8 tweets
John Breth (JB) | CyberInsight® on YouTube Profile picture
Sep 4, 2021
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
For free networking labs:

Cisco packet tracer:
netacad.com/courses/packet…
Juniper vLabs:
jlabs.juniper.net/vlabs/

Some great lab books (using packet tracer, affiliate links):
amzn.to/3DLDSSg (101 Labs Net+)
amzn.to/3yNWbSN (101 Labs CCNA)
Read 9 tweets
John Breth (JB) | CyberInsight® on YouTube Profile picture
Feb 7, 2021
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
Backup all device configs/critical data as needed. If you can phase deployments, that is cool, but you might have to do a hard cut over. Figure out what you are doing for circuits (new or migrating). /3
Read 9 tweets
John Breth (JB) | CyberInsight® on YouTube Profile picture
Aug 21, 2020
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.
Network level diagrams show logical connectivity between all nodes/devices in the environment. It should include the IP/hostname of the devices. Other details to include are VLAN information, system/authorization boundaries, as well as any unique information that might make sense
Read 12 tweets

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