Category: security

Jan 29 2018

Checking the Ubuntu Linux kernel updates on Spectre and Meltdown

Here is the status page for the Ubuntu updates on Spectre and Meltdown. For a background on these vulnerabilities, see the Meltdown and Spectre Attacks website. In this post we are trying out the Spectre & Meltdown Checker on different versions of the stock Ubuntu Linux kernel. Trying the Spectre & Meltdown Checker before any …

Continue reading

Permanent link to this article: https://blog.simos.info/checking-the-ubuntu-linux-kernel-updates-on-spectre-and-meltdown/

Jan 23 2018

A closer look at the new Hetzner cloud servers, by running LXD

Hetzner just announced a new set of cloud servers at good competitive prices. Let’s try them out and run LXD! Cloud server information Here is the lineup of the new cloud servers, The cheapest is a single-core, 2GB RAM and 20GB disk Virtual Private Server, with practically unlimited traffic. This is good enough to run …

Continue reading

Permanent link to this article: https://blog.simos.info/a-closer-look-at-the-new-hetzner-cloud-servers-by-running-lxd/

Dec 29 2017

Installing retdec on Ubuntu

retdec (RETargetable DECompiler) is a decompiler, and it is the one that was released recently as open-source software by Avast Software. retdec can take an executable and work back into recreating the initial source code (with limitations). An example with retdec Let’s see first an example. Here is the initial source code, that was compiled …

Continue reading

Permanent link to this article: https://blog.simos.info/installing-retdec-on-ubuntu/

Nov 07 2017

How to use Sysdig and Falco with LXD containers

Sysdig (.org) is an open-source container troubleshooting tool and it works by capturing system calls and events directly from the Linux kernel. When you install Sysdig, it adds a new kernel module that it uses to collect all those system calls and events. That is, compared to other tools like strace, lsof and htop, it …

Continue reading

Permanent link to this article: https://blog.simos.info/how-to-use-sysdig-and-falco-with-lxd-containers/

May 03 2017

How to run graphics-accelerated GUI apps in LXD containers on your Ubuntu desktop

In How to run Wine (graphics-accelerated) in an LXD container on Ubuntu we had a quick look into how to run GUI programs in an LXD (Lex-Dee) container, and have the output appear on the local X11 server (your Ubuntu desktop). In this post, we are going to see how to generalize the instructions in …

Continue reading

Permanent link to this article: https://blog.simos.info/how-to-run-graphics-accelerated-gui-apps-in-lxd-containers-on-your-ubuntu-desktop/

Apr 28 2017

A closer look at the new ARM64 Scaleway servers and LXD

Update #1: I posted at the Scaleway Linux kernel discussion thread to add support for the Ubuntu Linux kernel and Add new bootscript with stock Ubuntu Linux kernel #349. Scaleway has been offering ARM (armv7) cloud servers (baremetal) since 2015 and now they have ARM64 (armv8, from Cavium) cloud servers (through KVM, not baremetal). But …

Continue reading

Permanent link to this article: https://blog.simos.info/a-closer-look-at-the-new-arm64-scaleway-servers-and-lxd/

%d bloggers like this: