Category: security

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/

Feb 07 2017

How to create a snap with snapcraft for howdoi (CLI utilility for stackoverflow)

In the tutorial How to create a snap for how2 (stackoverflow from the terminal) in Ubuntu 16.04 we saw how to create a snap with snapcraft for the CLI utility called how2. That was a software based on nodejs. In this post we will repeat the process for another CLI utility called howdoi by Benjamin …

Continue reading

Permanent link to this article: https://blog.simos.info/how-to-create-a-snap-with-snapcraft-for-howdoi-cli-utilility-for-stackoverflow/

Feb 07 2017

How to create a snap for how2 (stackoverflow from the terminal) in Ubuntu 16.04

Stackoverflow is an invaluable resource for questions related to programming and other subjects. Normally, the workflow for searching http://stackoverflow.com/, is to search Google using a Web browser. Most probably, the result will be a question from stackoverflow. A more convenient way to query StackOverflow, is to use the how2 command-line utility. Here is how it …

Continue reading

Permanent link to this article: https://blog.simos.info/how-to-create-a-snap-for-how2-stackoverflow-from-the-terminal-in-ubuntu-16-04/

Feb 04 2017

How to create a snap for a Python app with networking using snapcraft in Ubuntu 16.04

Update #1: 6 Feb 2017  httpstat needs curl. Originally, this HowTo would freshly compile curl from the github source. Now, this HowTo shows how to reuse the existing curl package from the Ubuntu repositories. In this post we see how to create a snap package (or, just snap) of some software in Ubuntu 16.04. A …

Continue reading

Permanent link to this article: https://blog.simos.info/how-to-create-a-snap-for-a-python-app-with-networking-using-snapcraft-in-ubuntu-16-04/

Jul 23 2016

How to set up multiple secure (SSL/TLS, Qualys SSL Labs A+) websites using LXD containers

In previous posts we saw how to set up LXD on a DigitalOcean VPS, how to set up LXD on a Scaleway VPS, and how the lifecycle of an LXD container looks like. In this post, we are going to Create multiple websites, each in a separate LXD container Install HAProxy as a TLS Termination …

Continue reading

Permanent link to this article: https://blog.simos.info/how-to-set-up-multiple-secure-ssltls-qualys-ssl-labs-a-websites-using-lxd-containers/

%d bloggers like this: