OpenBSD version 6.3 has been released. OpenBSD is demonstrating to be an excellent server operating system. Security is more critical now than ever before. OpenBSD leads the pack when it comes to security features. OpenBSD provides a very robust and trustworthy system that comes with the cutting-edge security feature. OpenBSD 6.3 continues to offer the “multi-platform, ultra-secure operating system” experience. The OpenBSD team releases a new version every six months.
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Hardware
Raspberry PI 3 model B+ Released: Complete specs and pricing
in Categories Hardware, Open Source last updated March 14, 2018A new version of the Raspberry PI 3 model B+ has released, and it is incredible update over the older model. Just over two years ago, I got Raspberry Pi 3 Model B. It was my first 64-bit ARM board. It came with 64-bit CPU. Here are the complete specs for updated 64-bit credit card size computer.
How to record statistics about a Linux machine’s uptime
in Categories Command Line Hacks, Hardware last updated November 15, 2017Linux/Unix sysadmins have a weird obsession with server uptime. There is a xkcd comic devoted to this subject where a good sysadmin is an unstoppable force that it stands between the forces of darkness and your cat blog’s servers.
One can tell how long the Linux system has been running using the uptime command or w command or top command. I can get a report of the historical and statistical running time of the system, keeping it between restarts using tuptime tool. Like uptime command but with the more impressive output. Recently I discovered another tool called uptimed that records statistics about a machine’s uptime. Let us see how to get uptime record statistics using uptimed and uprecords on Linux operating system.
How to fix IPMI KVM JAVA BMCMD5withRSA and is treated as unsigned error
in Categories Datacenter, Hardware last updated July 8, 2017Like any good sysadmin, I kept my servers and desktop side up to date and patched all the time. However, recent Java updates have broken my IPMI KVM Java Applets on Dell, IBM, HP, Supermicro and FreeNAS mini servers. You will get an error that read as follows:
Unsigned application requesting unrestricted access to system. The following resource is signed with a weak signature algorithm MD5withRSA and is treated as unsigned.
Intel Euclid: Ideal platform for Robotics and Ubuntu Linux powers it
in Categories Hardware last updated May 23, 2017Intel announced Euclid development kit for robotics. It is Ubuntu Linux 16.04 based system. One can run, monitor and manage their robotics apps with the web interface. The software works with any ROS-based (Robotics Operating System) robot such as Arduino to build sensing capabilities in your project. You can use sensors and cameras to control a robot.
GnuBee: Personal blobfree NAS/Cloud server for hackers
in Categories Hardware last updated May 2, 2017GnuBee is a personal NAS (Network Attached Storage) cloud server that is currently being funded on Crowd Supply. It is a low-cost, low-power, NAS device that runs GNU/Linux and it is claimed to be based on free, libre, and open source software. No proprietary drivers needed to use GnuBee.
Eyegasm: 5 awesome Linux/Unix desktop customization that will blow your mind
in Categories Hardware, Open Source last updated April 21, 2017Everyone loves the desktop operating system. People customize their Linux or Unix desktop with themes, wallpapers, killer configuration and more. These customizations show you how cool your desktop can be!
How to enable Wake on Lan (WOL) with Advanced TomatoUSB wifi router firmware
in Categories Hardware, Howto, Networking, Open Source last updated March 29, 2017I recently installed TomatoUSB advanced firmware on my Asus RT-AC66U wifi router. This router act as my wireless Ethernet bridge. TomatoUSB advanced has additional features like
- SSH
- Multiple WAN support (3G/4G/Static IP/Cable/ADSL2)
- Tor
- Virtual Wireless
- DMZ
- IPv6
- FTP/Media server via USB
- BiTorrent Client via USB
- UPS support
- OpenVPN client and server
- Tinc VPN server and much more.
The Librem 13 v1: A full-fledged modern laptop with coreboot for freedom and privacy freaks
in Categories Hardware last updated February 28, 2017Coreboot is a free and open source software. The project aimed at replacing the proprietary BIOS firmware and blobs. Unfortunately, Coreboot does not run on the modern laptop (except Chromebooks) due to Intel ME and other closed source technologies.
Purism vendor sells Linux preloaded on the Librem 13 and the Librem 15 laptops. Purism claims to follow a strict belief in users’ rights to privacy, security, and freedom. Untile today Librem bios was not freed. However, the coreboot port for the Librem 13 v1 is 100% done. It means you can have blob free Coreboot running on a full-fledged modern laptop. The laptop comes with Hardware Kill Switches that physically sever the circuit at the hardware level for Wireless & Bluetooth, Camera & Microphone. The specs are as follows:
How to protects Linux and Unix machines from accidental shutdowns/reboots with molly-guard
in Categories Command Line Hacks, Debian Linux, Hardware last updated February 19, 2017Oops! I did it again. I thought I was logged into my home server. Turns out I rebooted the db server. Another my not so favorite is typing “shutdown -h 0” into the wrong terminal. I know a few people who have admitted to doing that here.
Is there any end to the madness? Do I need to suffer from accidentally random reboots and shutdowns? After all, it is human nature to make mistakes, but one should not keep on making the same mistakes again and again.