IRVIN LEMUS BLOG
Apt Mirror for HomeLabs
July 12, 2022
Having a local mirror in your homelab speeds up the update process when installing new OS's or generally updating. Most cloud providers have their own mirrors to speed up the process as well. Here is how you can make one for your lab.
Using NoVNC to phone home
January 6, 2022
I like to have easy access to my home infrastructure from anywhere. Apache Guacamole was my goto since it was deployed to BayCyber. While it did the job of providing access to a GUI in the browser, it's been troublesome with constant connection issues. As always, we looked for a new answer and found it in noVNC.
Packetwall
March 03, 2021
At a conference, Laura Chappel talked about a wall she had with lights that turn on when certain packets pass her network. I recalled it and said, why not make it and write about it?
RainbowTables Project
December 28, 2020
My final project of the year, I decided to tackle a goal of building a RainbowTable system and added a WebApp front end for use when I'm in the field. Here is how you can build one like it.
Running VMware on the Raspberry Pi 4
October 31, 2020
Did you know you can run VMware from the Raspberry Pi now? This will be great for students to be able to run their own datacenter at home for a lot less than buying servers!
Spanish Cybersecurity Classes
August 26, 2020
Are you interested in taking cybersecurity classes in Spanish? If so, we need your input!
Summer Camp 2020
July 31, 2020
The gamble that paid off; what seemed impossible for a group of teachers and community college students to do was achieved this summer. Now that it is in the last weeks, I can talk about the camps we successfully executed.
Plex Server Install
December 31, 2019
With the rise of multiple streaming services with varied content, there seems to be a push back to having your own personal collection of movies and shows. A person could go down the road of buying a small form factor motherboard, CPU, Hard Drives and install Linux, deal with local network issues to get the content available outside the house; not including upkeep on the physical as well as the software. Plex has a online server you can install and use to stream your own personal content online, ad free. A notice: THIS GUIDE DOES NOT CONDONE ILLEGAL USE! Please remember the legality and ethics of piracy, do what you will with this information, but I am not responsible.
OWASP Meetups in 2019
November 15, 2019
OWASP Bay Area has been a great place to learn and talk with industry and see what people are doing. Here is a short summary of things that stuck with me or I learned and wanted to share with you, now that this has come to a close and will resume next year.
Pacific Hackers Conference: What I Learned
November 10, 2019
Pacific Hackers had their conference this weekend at the Hacker Dojo in Santa Clara. Here is a quick recap of things I learned that I found beneficial to share.
Cybersecurity Disclosure Act of 2019
October 31, 2019
The Senate and the House are both working on a new law aimed to get knowledgeable security experts on the boards of companies. What could go wrong? What could go right?
Why I Left Wix
September 1, 2019
Moving from one platform to another can be a tricky situation. Akin to movements from Windows 7 to 10, migrating a server or switching vendors, there's always a learning curve and the possibility of things going wrong. This switch involved leaving Wix, a website hosting service to using GitHub pages.
Ubuntu 19 - Enable Hibernation
August 24, 2019
After spending the summer playing with differnet OS's, I found that Debian had hibernation ready capability. Unfortunately, I ran into some other issues with it and my laptop and decided to go back to Ubuntu. Ubuntu 19.04's install process does not create a large enough swap partition to allow the system to hibernate, which Debian did.
OWASP Cornucopia
August 7, 2019
Since the CyberCamps ended last week, I have had time to begin preparing for the Fall semester at Cabrillo College. In that time, I have also been gathering new resources and realigning the baycyber.net website for the academic year's vision and goals. In that time, I came across OWASP Cornucopia, a card game that piqued my interest. After getting the college to pay for the printing of the cards, I learned how to play.
Kali Linux on GCP
July 24, 2019
The Bay Area Competitions Program is currently running as a hybrid cloud between NDG's Netlab+ and Google Cloud. In my research, installing Kali Linux to other cloud platforms (Azure has Kali ready to deploy; I have seen scripts to deploy on AWS) is relatively easy. This guide will show how to get Kali Linux running on a GCP image.
Using HaveIBeenPwned Password List for Education
June 22, 2019
HaveIBeenPwned by Troy Hunt has been a great asset since its inception for many. With the possibility of the service being sold, now is the time to get a copy of the hashes before its too late!