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Gerard O'Brien
Gerard O'Brien
Gerard O'Brien
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Hey there I'm Gerard, an Irish man who loves all things cloud, network and cybersecurity!

I've been working in IT for around 20 years, which goes all the way back to when I was building computers and selling them to neighbours at Christmas... to now, where I work in Cybersecurity for large global consultancy leading an amazing team.

You're in the right place if you want to get hands on, learn new skills and build labs!



The perfect duo for Incident Response!
23:51
3 месяца назад
You can pass any IT certification doing this!
14:14
3 месяца назад
Should you do the CCNA in 2024?
7:34
7 месяцев назад
Cut your cloud costs doing this!
9:36
7 месяцев назад
Building my new PROXMOX lab
9:40
8 месяцев назад
How I passed the CISSP Exam on my first attempt.
11:58
8 месяцев назад
How to find free IT training.
10:06
8 месяцев назад
NMAP for Cyber Ninjas!
13:04
10 месяцев назад
How to learn Linux in 2024!
8:38
11 месяцев назад
Good things to come.
5:14
Год назад
30 commands you NEED to know!
8:56
Год назад
Build your own SECURE home lab!
7:13
Год назад
Комментарии
@sm00thdetects
@sm00thdetects 3 дня назад
Thank you so much for all of the time, energy and passion you have dedicated to this lab series! I am looking to start this lab myself but I don't have a physical server so could I build everything using Proxmox's virtual environment or VirtualBox? If so, which virtualization environment would you recommend? @gerardobrien
@Xarishher
@Xarishher 3 дня назад
Hi, I want to start my Cloud Computing Journey, I only have experience in Computer Science/IT during AS-Levels, but now I am in year 13 and now don't remember much - would you recommend me to start with Cisco CCNA to start my Cloud Journey?
@gerardobrien
@gerardobrien 3 дня назад
Hey mate, if cloud is your jam then take a look aloud.guru.. so many courses on there you could do! Grab the monthly subscription for a few months and smash out as many courses as you can! Start on the beginner and foundation courses then move on! You'll learn so much! Best of luck mate 💪
@Xarishher
@Xarishher 3 дня назад
@@gerardobrien would you recommend this roadmap for me : CCNA --> Linux --> IaaS tools Terraform --> Choose Cloud Provider (AWS, GCP, AZURE) --> Chosen Provider Certifications --> Experience, interviews etc
@ananypratap
@ananypratap 3 дня назад
Hi Gerard do you need a editor as there are some part in the editing part that can be improved
@gerardobrien
@gerardobrien 3 дня назад
Thanks, I'm doing my best to get better.. but to do that I need to keep editing myself... Hence a weekly video! Practice makes perfect right 😅
@ananypratap
@ananypratap 3 дня назад
@@gerardobrien you can hire a editor as it can edit better and second he can also save you a lot of time and energy
@Marrrrrzy
@Marrrrrzy 4 дня назад
I am having some issues. I followed step by step the ubuntu install. Created the username and password. But then once it reboots after installing, i cannot login. Just says "Login incorrect". I have recreated the VM 5 times now. Trying super simple passwords. I know its not the keyboard layout as I can type the password in the login prompt and see it types correctly. Tried searching around but could not find any answers.
@notta3d
@notta3d 4 дня назад
Good video. Where do the packages come from? Are they user submitted, hosted on the vendors site, or hosted on some Choco repository? Thanks.
@gerardobrien
@gerardobrien 4 дня назад
Hey mate! These are all in community hosted repositories and can also be uploaded by users. I just added a caution message to the description video to let people know to be careful when downloading... theres also more info on each package page. :)
@gerardobrien
@gerardobrien 4 дня назад
This is by far the FASTEST way to install applications and packages on Windows, Mac OSX and Linux!
@KenSherman
@KenSherman 4 дня назад
8:32 As far as online communities goes, I know you was speaking in general but I like to mention that I find Quora to be a great social media community site🔖! It has that peer review or SME flare to it that I think it's worth checking out as it pertains to specific questions (down the line)⭐; arguably better than that old Google+ back in the day. I've noticed that Facebook (Meta) groups not listed. Don't worry, I don't have them listed either.😜 However, historically it'd be worth considering on people's list if not already, but I don't know since I haven't been on regularly for years.
@KenSherman
@KenSherman 5 дней назад
7:35 Everything's on point but I'd be careful with [our current iteration of] A.I. Not only it still have kinks or a few bugs to work out but it's still in its infancy despite its original version been out for a while. There have been a number of cases where I & countless others had to correct it; and others where it agreed with the user despite the possibility of the user being wrong still. They are still dummy tech aka "artificial" intelligence. And yes in this case, the numbers can or do, lie🤥 -like Usopp, hence the long nose...ahem- .
@gerardobrien
@gerardobrien 5 дней назад
Hey good point, I take everything I get from AI as hearsay... Always good to follow up with another resource to make sure it's actually correct 👍
@justingwimbi
@justingwimbi 5 дней назад
Hi Herard. Where did you buy your books from?
@fatihakbas8529
@fatihakbas8529 6 дней назад
When I start Caldera, I am getting 500 Internal Server Error. Log files show InvalidToken error but I can't find a solution for it.
@blababamtv
@blababamtv 2 дня назад
I opened and closed a ticket for this on their github
@blababamtv
@blababamtv 2 дня назад
Aiohttp needs updated in their requirements.txt file
@lessonswithricardo
@lessonswithricardo 6 дней назад
Bro, keep going. I'm right there with you. We have got to save our people the headaches and money associated with expensive courses
@cesarbarrera2488
@cesarbarrera2488 7 дней назад
@gerardobrien overall how much do you think you spend on this lab?
@mohammadsediqi6961
@mohammadsediqi6961 7 дней назад
there is no OVF format now in the eve-ng website is ok to download the iso format ?
@gerardobrien
@gerardobrien 6 дней назад
Hey yea the ISO is what I used to build this 👍
@mohammadsediqi6961
@mohammadsediqi6961 8 дней назад
Hello sir, I have an issue when I am creating a node for example the kali Linux node to the eve-ng the screen is not showing up, i followed the exact steps that you did, I also increased the ram and cpu I didn’t help ?
@gerardobrien
@gerardobrien 8 дней назад
Hery mate, sounds like you need to install all the relevant client pack for your OS.. you can find them at the bottom of this page www.eve-ng.net/index.php/download/
@anthonystanziola
@anthonystanziola 10 дней назад
Great work ! love the video series. Quick question, what do you use to create your network diagrams ?
@gerardobrien
@gerardobrien 9 дней назад
Hey mate I used Lucidchart to create these diagrams 👍
@acmshift
@acmshift 10 дней назад
Excellent! Thank you for offering this!
@d4n392v2
@d4n392v2 10 дней назад
Glad to be here for Episode # 1!
@gerardobrien
@gerardobrien 10 дней назад
Haha thanks for being here 💪
@temp_user_id
@temp_user_id 11 дней назад
Concise, love it lol
@gerardobrien
@gerardobrien 10 дней назад
Good to hear thanks!
@UnderScorePT
@UnderScorePT 11 дней назад
Great content, keep it up!
@gerardobrien
@gerardobrien 10 дней назад
Thanks!!
@gerardobrien
@gerardobrien 11 дней назад
Cybersecurity for Beginners - a curriculum! Hope this helps all those beginners out there... and also all those people with years of experience.... that forget some of the basics! 😆
@mxaix
@mxaix 11 дней назад
Great mate
@marc_h_cl
@marc_h_cl 11 дней назад
Thanks
@ssboxer
@ssboxer 11 дней назад
That intro…🤘🏾 Thank you for providing such a great resource.
@RektaWasHere
@RektaWasHere 12 дней назад
Hey man, I've been loving your channel
@gerardobrien
@gerardobrien 11 дней назад
Thanks mate glad you like it 🙌
@xCheddarB0b42x
@xCheddarB0b42x 17 дней назад
This is awesome stuff. I have used the OWASP Juice Shop, but did not know about bwapp nor webgoat.
@aucklandaws502
@aucklandaws502 19 дней назад
can this deployed within a VM as I dont have spare PC to setup hence was thinking of deploying within a Vm
@gerardobrien
@gerardobrien 8 дней назад
This lab is made up of many different vm's. you can build them one by one, depending on what you need. I think some people have built what they need using vmware workstation though :)
@petemawhinney3109
@petemawhinney3109 25 дней назад
I had trouble with the wazuh web interface. It would often report "Wazuh dashboard service is not ready yet". With the help of ChatGPT it was eventually resolved by editing the wazuh-indexer.service, `sudo systemctl edit wazuh-indexer.service`. Then adding the 2 lines ``` [Service] TimeoutStartSec=300 ``` Then reload systemd: `sudo systemctl daemon reload` and restart the indexer: `sudo systemctl restart wazuh-indexer` Hope this helps others. 🤷
@gerardobrien
@gerardobrien 24 дня назад
Good tip! And good work figuring it out 💪
@delefagbemi6335
@delefagbemi6335 26 дней назад
Great demo, never tried this before
@deanmcbride571
@deanmcbride571 29 дней назад
Does the tool come with recommendations on which servers to install the agents? I assume you would want to emulate traversal too
@gerardobrien
@gerardobrien 29 дней назад
You can install agents on linux, mac, windows.. also theres a number of adversaries that you can use to simulate traversal. Have a look here:caldera.readthedocs.io/en/latest/Lateral-Movement-Guide.html
@BlackwallSys
@BlackwallSys Месяц назад
looks cute...i will see later,thanks
@TheLMFAOZ
@TheLMFAOZ Месяц назад
I see what you did there with the length of the video... Well played! Good content! Thanks for sharing
@gerardobrien
@gerardobrien Месяц назад
@@TheLMFAOZ lol I've no idea what you mean
@TheLMFAOZ
@TheLMFAOZ 29 дней назад
@@gerardobrien 1337 :D
@gerardobrien
@gerardobrien 29 дней назад
@@TheLMFAOZ 😂😂 I like to leave the odd easter egg to see who's paying attention
@martinhoneves
@martinhoneves Месяц назад
Thank you for sharing this tool.
@dariuscurrie3284
@dariuscurrie3284 Месяц назад
Hi Gerald, great work on creating great content! I am a reasonable noob to cyber, and I'm trying to follow along, trying to expand my project portfolio and hands-on experience. However, I'm trying to do it on the VMware workstation. Got as far as installing the Ubuntu live server, however unable to config the vlan on the server. Any advice?
@gerardobrien
@gerardobrien Месяц назад
Hey mate, welcome! Glad to hear your following the series :) You add the VLAN when your at the network config part of the build.. when you initially start the vm it goes through a wizard. If have went past that part, you can manually modify the network config and add the vlan. However, if your new to all this.. you'll probably save yourself some time by scrapping the VM you built and creating a new one. Hope that helps.. let me know if it works for you! Cheers
@dariuscurrie3284
@dariuscurrie3284 Месяц назад
@@gerardobrien Hi mate. Thanks for the reply. I did some research and it seems that vmware workstation does not support vlan tagging or segmentation. So I think I will have to put the whole lab into just one network. I know that can be risky but my thinking is that as long as the entire network is isolated, that should be fine. Anyway, I wanted to update you on the current standing. Cheers
@raygomez1847
@raygomez1847 Месяц назад
Okay Im running into an issue when creating the 2nd network in Portainer. It says "Failure, Invalid pool request: Pool overlaps with other one on this address space.
@raygomez1847
@raygomez1847 Месяц назад
I read that there were possibly some containers running using the network so rebooted the ubuntu server and I was able to add the vlan30 network... continuing on. 👍
@gerardobrien
@gerardobrien Месяц назад
@@raygomez1847 thanks for sharing!
@raygomez1847
@raygomez1847 Месяц назад
Lets goo!! Made it to Episode 2!
@petemawhinney3109
@petemawhinney3109 Месяц назад
Thanks, Gerard. I'm really enjoying following along with this project. Much appreciated.
@BradJohnson1
@BradJohnson1 Месяц назад
12:43 you forgot to blur :o
@gerardobrien
@gerardobrien Месяц назад
@@BradJohnson1 very well spotted 😀😀 everythings on my website now anyway 👍👍
@babybossshark6625
@babybossshark6625 Месяц назад
great job you thank you.. but please for new bie the server web interface can't be reach what can be the issue have try searching the forum for solution can't find
@gerardobrien
@gerardobrien Месяц назад
Hey mate the default port used for the web interface is 8006, so you would put this on your address bar YOUR.SERVER.IP.ADDRESS:8006
@babybossshark6625
@babybossshark6625 Месяц назад
@@gerardobrien Thank you so much for your reply and hard work, I did put the port not working, I want to ask I bought a mini pc to use for the Proxmox do I need to get ethernet cable for it because I was setting it up with the wifi adapter that came with the mini pc ..I can ping the gateway but not the server and can't access the server web interface also .. and have tried to change the ip many times ..any help should I just buy the ethernet cable?
@gerardobrien
@gerardobrien Месяц назад
@@babybossshark6625 just make sure the Proxmox server is connected to the wifi, configured with the correct IP address details, default gateway etc and you should be able to connect ok over wifi. Obviously make sure the server and your laptop are on the same wi-fi too 👍
@gerardobrien
@gerardobrien Месяц назад
The Adversary Emulation tool you need to know! Honestly, if you are in Cybersecurity this is a tool you need to download and play around with!
@Jordan-qm9xj
@Jordan-qm9xj 22 дня назад
Talk about your path to cyber security
@vietkrotik2265
@vietkrotik2265 17 дней назад
Thank you very much. Have a nice day!
@mauriciob3334
@mauriciob3334 Месяц назад
I think that seconion in this series is doing the same as wazuh plus thehive cortex
@gerardobrien
@gerardobrien Месяц назад
Yea there's a few overlapping tools in the lab, I just wanted to add them and play about 👍
@mauriciob3334
@mauriciob3334 Месяц назад
​@@gerardobrien its a great lab, I think the thing in seconion is that it is just like another siem from a provider, that has all in one caracteristics, so the learning curve is very large, more than just another open source software. So if you choose it, you wouldnt be able to change, or it will be very hard. I decided to leave it and use the rest of tools that you describe here just because integrations with seconion were so hard to maintain that we lost a lot of time in that. I hope that you can show the rules and decoders that its a very interesting part of wazuh
@janekmachnicki2593
@janekmachnicki2593 Месяц назад
Well done mate Thanks for tutorial.Reagrds from brumie. Normaly i use Fofa Shodan a few bash magic oneliners and there is plenty of fun lol
@cupra2Jock.
@cupra2Jock. Месяц назад
So your making way over 100k a year
@lecturesfromleeds614
@lecturesfromleeds614 Месяц назад
The open university does an Msc Computing (Networking) using Cisco
@gerardobrien
@gerardobrien Месяц назад
Cool must check this out thanks for sharing
@bhiharibabukarma7323
@bhiharibabukarma7323 Месяц назад
Good evening dear my qualification is 12 SSC I ready CCNA exam qulfe pass the working in hotel department maintenance 3:27 electrician do possible job apply please guide me
@zttack317
@zttack317 Месяц назад
How would I go about getting the networking and vlans set up on vmware workstation?
@gerardobrien
@gerardobrien Месяц назад
Hey mate yea you should be able to do this, it's within the network preferences section of VMware workstation... Check out the very first video on my channel, I made a walk through of exactly this 👍
@isee-9625
@isee-9625 Месяц назад
Hey. Gerard I have issue with pfsense on the repos 13.00 i only have two files FreeBSD.conf and pfsense.conf am i missing something Great work enjoying this project
@WingMaker2050
@WingMaker2050 Месяц назад
u got money to spend lol
@jacobfelton
@jacobfelton Месяц назад
Hi Gerard - This was a great series and I was able to follow along all the way. Built the whole thing on 1 HP Elitedesk G4 mini with 2 x 1TB nvme and 32GB RAM. I can't run all VMs at once, but I rarely would need to. I went with cloudflare for DDNS because I already had a domain there. I also added rules in pfsense that blocked all traffic in the lab from reaching the rest of my home network. If you did that, I missed it somehow. Thanks for making these! I look forward to playing in the lab I now have. I'd like to sort out how to expand the lab network to the other proxmox nodes in my cluster. That'd let me spread the VMs around a bit.
@gerardobrien
@gerardobrien Месяц назад
Amazing great to hear! Already planning the next lab so save some HD space 😊
@pcwway2dawn
@pcwway2dawn Месяц назад
This series is fantastic! I'm building this on my unRAID system and taking notes. I never understood Portainer before, but it's so simple now!
@gerardobrien
@gerardobrien Месяц назад
It's a good tool! But next time I'll use Podman 👍 check it out
@ojekaSundaycolex
@ojekaSundaycolex Месяц назад
Am unable to install proxmox can i use virtual box or VMware
@gerardobrien
@gerardobrien Месяц назад
You can yea, you just need to make sure the networking is right 👍