@tanto259

IBM Champion 2022-2024. Committer for COBOL Programming Course. Tweets are my own. More active at @hartanto@securitypuppy.com.

 Singapore
securitypuppy.com
Joined April 2012
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  • Following86
  • Followers107
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Decided to self-host GoToSocial, just in case Twitter implodes. So, follow me from your Mastodon or other ActivityPub account? social.securitypuppy.com/@ha…

Hartanto (@[email protected])

Having fun with mainframe! Toots and instance are my own. Server running GoToSocial, which is still in beta and missing some features.

social.securitypuppy.com
I'll be speaking at #IBMZDay on Oct 18 6 AM ET! Join us for a hands-on session to learn about the basics of #COBOL with VSCode and Zowe. Don’t miss this opportunity to learn, connect and network. Register now at ibm.biz/ibmzday-2023.
Poster for IBM Z Day 2023's Session called "Hour of Code - zNextGen COBOL and the Modern Mainframe". Scheduled for 18 October 2023, 6 AM ET. Register now at https://ibm.biz/ibmzday-2023.

ALT Poster for IBM Z Day 2023's Session called "Hour of Code - zNextGen COBOL and the Modern Mainframe". Scheduled for 18 October 2023, 6 AM ET. Register now at https://ibm.biz/ibmzday-2023.

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In February, IBM Z Xplore and HackerEarth announced the 2022 IBM zStudent Contest winners. Only eight winners were selected out of 25,000 contestants—including TechChannel Rising Stars Hartanto Ario Widjaya and Salisu Ali. Read about their experience here: hubs.ly/Q01G59TQ0
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Trying out Keyoxide. Full profile available at securitypuppy.com/keyoxide. [Verifying my OpenPGP key: openpgp4fpr:a19807ce3472eade98bf030eeeb1d3af8cf1c236]
Apparently, @Tailscale works perfectly fine on an @IBMZ's #LinuxONE machine! I can even use Tailscale SSH from my Windows machine to a s390x Ubuntu. Hmm, I'm curious whether it will work on z/OS USS though... #mainframe #IBMChampion
Screenshot of terminal window with 3 command output. First is `uname -m` which shows `s390x`. Second is `tailscale ip -4` which returns a Tailscale IPv4 address. Third is `tailscale status` which shows an active connection from a Windows machine.

ALT Screenshot of terminal window with 3 command output. First is `uname -m` which shows `s390x`. Second is `tailscale ip -4` which returns a Tailscale IPv4 address. Third is `tailscale status` which shows an active connection from a Windows machine.

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If you're looking for the *best* mainframe hacking class, with actual fun labs, look no further than @evilmainframe. 10/10 would recommend.
evilmainframe®@evilmainframe27 Sep 2022
Get real world hands on mainframe hacking experience in this one of a kind class! Taught by two of the leading mainframe cybersecurity experts! Nov 7-8 2022 eventbrite.com/e/evil-mainfr…

Evil Mainframe Training (NOVEMBER 2022) ONLINE!

This first of its kind mainframe hacking class teaches you the techniques you need to conduct mainframe penetration tests on z/OS.

eventbrite.com
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Join thousands of students who have already registered for the IBM zStudent Contest, happening Sept 14-Dec 31. Be part of this thrilling contest with the opportunity to win prizes! Register now: ibm.biz/studentcontest2022 #ibmz #ibmzstudentcontest #ibmzxplore

IBM zStudent Contest

Here are the Winners! HackerEarth brings you IBM zStudent Contest, sponsored by IBM Z Xplore, a thrilling coding contest centered around sustainable energy that will teach you computing skills used...

hackerearth.com
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Join us on Sept 15 for #IBMzDay and let's hear what the next generation of COBOLers have to say about #COBOL! Register now at ibm.biz/ibmzday-2022. #IBMChampion #mainframe #IBMZ
Social tile for the Meet the Future COBOLers session on IBM zDay 2022. Session is held on September 15, 2022 at 11:30 AM till 12:00 PM EDT. Register now at https://ibm.biz/ibmzday-2022.

ALT Social tile for the Meet the Future COBOLers session on IBM zDay 2022. Session is held on September 15, 2022 at 11:30 AM till 12:00 PM EDT. Register now at https://ibm.biz/ibmzday-2022.

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Apparently you can run a Minecraft server on @IBMZ's #LinuxONE machine pretty smoothly! Now, time to see if I can get a GUI running directly on the instance :) #mainframe #IBMChampion
Minecraft performance debug output saying that the processor vendor is IBM/S390.

ALT Minecraft performance debug output saying that the processor vendor is IBM/S390.

Minecraft screen!

ALT Minecraft screen!

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Apparently, VNC works! I have XFCE desktop environment installed in this Ubuntu #LinuxONE instance.
Image showing a XFCE desktop environment on a LinuxONE Ubuntu instance, connected via VNC.

ALT Image showing a XFCE desktop environment on a LinuxONE Ubuntu instance, connected via VNC.

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New Minecraft versions won't launch due to 3D rendering issues... And, I got busted trying to run Minecraft 1.0 on a big-endian system.
Error when launching Minecraft 1.0 on a LinuxONE system. liblwjgl.so: wrong ELF class: ELFCLASS32 (Possible cause: endianness mismatch)

ALT Error when launching Minecraft 1.0 on a LinuxONE system. liblwjgl.so: wrong ELF class: ELFCLASS32 (Possible cause: endianness mismatch)

New to #mainframe? Want to find out where to network and get learning materials? Find resources which can help you to learn more at securitypuppy.com/links! #IBMChampion #COBOL #IBMZ
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Check out @Interskill's latest #MainframeCertified for amazing mainframe education! credly.com/badges/e48ea76e-8…

Interskill - IBM Mainframe Systems Operator Level I Certificate 2.4 was issued by Interskill...

This IBM Professional Certificate earner can describe hardware and software components of a typical IBM mainframe environment. They can access products such as TSO, ISPF, and SDSF to monitor and view...

credly.com
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Happy to announce that I'm now an #IBMChampion for @IBMZ! #IBMZ #FansOfZ credly.com/badges/b6cfa40f-4…
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