How to enable Wake on Lan (WOL) with Advanced TomatoUSB wifi router firmware

last updated in Categories Hardware, Howto, Networking, Open Source

I 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

last updated in Categories Hardware

Coreboot 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

last updated in Categories Command Line Hacks, Debian Linux, Hardware

Oops! 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.

My anger that can't be contained
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.

PSA: Intel Atom C2000 Chips Flaw Bricking Routers/NAS/Firewall devices that are powered by Linux, pfSense and FreeNAS

last updated in Categories Hardware

Intel’s Atom C2000 chips are bricking products, and it’s not just Cisco hit. From the theregister:

Intel’s Atom C2000 processor family has a fault that effectively bricks devices, costing the company a significant amount of money to correct. But the semiconductor giant won’t disclose precisely how many chips are affected nor which products are at risk. Coincidentally, Cisco last week issued an advisory warning that several of its routing, optical networking, security and switch products sold prior to November 16, 2016 contain a faulty clock component that is likely to fail at an accelerated rate after 18 months of operation.

Intel has “Silvermont” which is a microarchitecture for low-power Atom, Celeron and Pentium branded processors used in systems on a chip (SoCs) made by Intel. It includes:

  1. Avoton – SoCs for micro-servers and storage devices.
  2. Rangeley – SoCs targeting network and communication infrastructure.

How to use CoreFreq CPU monitoring software on Linux

last updated in Categories Hardware, Open Source

Recently I came across an excellent software called CoreFreq. It is a CPU monitoring software designed for 64-bits Processors w/ architectures Intel Atom, Core2, Nehalem, SandyBridge and superior, and AMD Family 0F. It runs on 64 bit Linux system. CoreFreq provides a framework to retrieve CPU data with a high degree of precision:

System76 brings 4K display Ubuntu Linux laptop for Pro users

last updated in Categories Hardware, Linux News

Finally, some good news for Apple fans who crashed System76 website a few days back. Apple makes a good laptop. However, they lack the option to add additional RAM or ports or graphics card. The new System76 Oryx laptop has a 4K HiDPI display. If you are a sysadmin, DevOps, or developer, give it a try to System76.
System76 Oryx Pro with 4K display

Accessing Internet from cloud VM when you have only private network enabled

last updated in Categories Hardware, Howto

We have a couple of virtual servers hosted with Softlayer for processing data and backup purpose. The public interface is completely turned off i.e. no Internet access. We can only access VMs using a VPN. It resulted in decreased costs and many security problems for backend servers. However, when you order “Private Network Only” cloud VM, you cannot route outgoing traffic to the Internet using your VM.

16 Places To Buy A Laptop With Linux Preloaded

last updated in Categories Hardware, Open Source

Linux preloaded
I want a Linux system without having to pay a Microsoft tax. The hardest part of using Linux is to find out the correct hardware. Hardware compatibility and drivers can be a big issue. But where one can find Linux desktops or Laptop for sale? Here are fifteen places to buy a preinstalled Linux Desktop and Laptop.