https://dmachard.github.io/Recent content on My technical gistsHugo -- gohugo.ioen-USWed, 25 Mar 2026 00:00:00 +0100https://dmachard.github.io/posts/0069-bluetooth-low-energy/Wed, 25 Mar 2026 00:00:00 +0100https://dmachard.github.io/posts/0069-bluetooth-low-energy/Bluetooth LE scanner et sniffing sur ubuntuhttps://dmachard.github.io/posts/0068-android-auto-dev/Tue, 17 Mar 2026 00:00:00 +0100https://dmachard.github.io/posts/0068-android-auto-dev/Steps to set up the development environment for Android Auto on Ubuntuhttps://dmachard.github.io/posts/0065-wireguard-homelab/Tue, 17 Mar 2026 00:00:00 +0100https://dmachard.github.io/posts/0065-wireguard-homelab/Homelab: exposer ses services homelab avec WireGuard, Traefik et Let’s Encrypthttps://dmachard.github.io/posts/0067-esp32-family/Fri, 20 Feb 2026 00:00:00 +0100https://dmachard.github.io/posts/0067-esp32-family/Vue d’ensemble comparative de la famille ESP32 avec leurs principales différences techniques pour les projets IoT.https://dmachard.github.io/posts/0066-gift-powerdns/Wed, 11 Feb 2026 00:00:00 +0100https://dmachard.github.io/posts/0066-gift-powerdns/PowerDNS X-Mas gifthttps://dmachard.github.io/posts/0064-gpu-passthrough-lookingglass/Sat, 07 Feb 2026 00:00:00 +0100https://dmachard.github.io/posts/0064-gpu-passthrough-lookingglass/Setup Guide pour Ubuntuhttps://dmachard.github.io/posts/0063-nsenter-container/Thu, 26 Dec 2024 00:00:00 +0100https://dmachard.github.io/posts/0063-nsenter-container/without installing any toolshttps://dmachard.github.io/posts/0062-play-with-doq/Wed, 09 Oct 2024 00:00:00 +0100https://dmachard.github.io/posts/0062-play-with-doq/Some notes to test DoQhttps://dmachard.github.io/posts/0061-dns-perf/Thu, 12 Sep 2024 00:00:00 +0100https://dmachard.github.io/posts/0061-dns-perf/DNS tools for testing performance purposehttps://dmachard.github.io/posts/0060-cheat-sheet-linux/Sun, 07 Jan 2024 00:00:00 +0100https://dmachard.github.io/posts/0060-cheat-sheet-linux/This page lists some commands for Linux, Git, Ssh, GPG, etc…https://dmachard.github.io/posts/0059-syslog-tls/Sun, 22 Oct 2023 00:00:00 +0100https://dmachard.github.io/posts/0059-syslog-tls/Enhance the security of your log management system by enabling TLS encryption and mutual authenticationhttps://dmachard.github.io/posts/0058-pdns-tls-mysql/Fri, 29 Sep 2023 00:00:00 +0100https://dmachard.github.io/posts/0058-pdns-tls-mysql/In this post, we will see how to enable TLS encryption with authentication between PowerDNS authoritative server and remote MySQL database.https://dmachard.github.io/posts/0056-mariadb-enable-tls/Wed, 27 Sep 2023 05:00:00 +0100https://dmachard.github.io/posts/0056-mariadb-enable-tls/This post will describe the steps to configure SSL/TLS encryption for a MariaDB container running in Docker.https://dmachard.github.io/posts/0057-create-self-certificate/Wed, 27 Sep 2023 00:00:00 +0100https://dmachard.github.io/posts/0057-create-self-certificate/This post will describe how to generate Self-Signed Certificateshttps://dmachard.github.io/posts/0055-dnstap-extra-field/Wed, 20 Sep 2023 00:00:00 +0100https://dmachard.github.io/posts/0055-dnstap-extra-field/In this blog post, we will explore how to include additional metadata in your DNsStap logs, such as security flags, resolver IP addresses, and more.https://dmachard.github.io/posts/0054-dnsdist-config-examples/Sun, 17 Sep 2023 00:00:00 +0100https://dmachard.github.io/posts/0054-dnsdist-config-examples/This post aims to share several configuration examples for DNSdisthttps://dmachard.github.io/posts/0053-coredns-dnstap-tls/Mon, 28 Aug 2023 00:00:00 +0100https://dmachard.github.io/posts/0053-coredns-dnstap-tls/In this post, you will see how to enable TLS encryption for outgoing dnstap streams with CoreDNShttps://dmachard.github.io/posts/0052-dnsdist-ip-blacklisting/Thu, 17 Aug 2023 00:00:00 +0100https://dmachard.github.io/posts/0052-dnsdist-ip-blacklisting/A DNSdist configuration example to blacklist IP addresses with DNS UPDATE control and dynamic blocking duration.https://dmachard.github.io/posts/0051-dnsdist-blocklist-domains/Sat, 12 Aug 2023 00:00:00 +0100https://dmachard.github.io/posts/0051-dnsdist-blocklist-domains/A DNSdist configuration example to block or unblock domains temporarily and in a dynamic way with DNS notify.https://dmachard.github.io/posts/0050-python-publicaddr/Sat, 22 Jul 2023 01:00:00 +0100https://dmachard.github.io/posts/0050-python-publicaddr/Simple python module for getting your public IP V4 and V6 from several providers in random mode with also several protocols (DNS, HTTPS and STUN).https://dmachard.github.io/posts/0048-dnsdist-dns-tunneling-protection/Sat, 22 Jul 2023 00:00:00 +0100https://dmachard.github.io/posts/0048-dnsdist-dns-tunneling-protection/A DNSdist configuration example to attempt to block DNS tunnelling.https://dmachard.github.io/posts/0049-dnsdist-echoip/Sat, 22 Jul 2023 00:00:00 +0100https://dmachard.github.io/posts/0049-dnsdist-echoip/A DNSdist configuration example to map any IP address to a hostname for development purpose.https://dmachard.github.io/posts/0047-dns-tunneling-overview/Tue, 04 Jul 2023 00:00:00 +0100https://dmachard.github.io/posts/0047-dns-tunneling-overview/This post is an overview of some dns tunnneling tools with installation procedure.https://dmachard.github.io/posts/0046-dnsdist-blacklist/Sat, 01 Jul 2023 00:00:00 +0100https://dmachard.github.io/posts/0046-dnsdist-blacklist/A DNSdist configuration example to block big list of ads/malwares domainshttps://dmachard.github.io/posts/0045-arduino-vscode-init/Sun, 25 Sep 2022 00:00:00 +0100https://dmachard.github.io/posts/0045-arduino-vscode-init/Install arduino IDEhttps://dmachard.github.io/posts/0010-powerdns-dnsdist-docker/Wed, 22 Dec 2021 00:00:00 +0100https://dmachard.github.io/posts/0010-powerdns-dnsdist-docker/This post details how to execute pdns-auth in docker containerhttps://dmachard.github.io/posts/0044-dnscollector-grafana-loki/Thu, 16 Dec 2021 00:00:00 +0100https://dmachard.github.io/posts/0044-dnscollector-grafana-loki/Example to collect dnstap stream and analysing logs with Loki and Grafanahttps://dmachard.github.io/posts/0043-blackbox-prometheus-dns/Sat, 04 Dec 2021 00:00:00 +0100https://dmachard.github.io/posts/0043-blackbox-prometheus-dns/Example to monitor DNS records with the blackbox exporterhttps://dmachard.github.io/posts/0042-dnscollector-dnstap-json-answers/Sat, 27 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0042-dnscollector-dnstap-json-answers/Example to collect dnstap messages from dns servers and follow dns answers with JSON formathttps://dmachard.github.io/posts/0041-dnsdist-lua-hostname/Sun, 21 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0041-dnsdist-lua-hostname/This post gives some examples of LUA code to modify the behavior of your dnsdisthttps://dmachard.github.io/posts/0037-install-docker-swarm-persistant-storage/Wed, 17 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0037-install-docker-swarm-persistant-storage/Procedure to install docker swarmhttps://dmachard.github.io/posts/0040-promox-terraform-create-vm/Mon, 15 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0040-promox-terraform-create-vm/This post details how to create a virtual machine with Terraform on your proxmox infrastructure.https://dmachard.github.io/posts/0039-promox-cloudinit/Sun, 14 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0039-promox-cloudinit/How to build a cloud-init template with Almalinux8https://dmachard.github.io/posts/0038-promox-disk-passthrough/Sun, 14 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0038-promox-disk-passthrough/How to attach physical disk to Virtual Machine on Promoxhttps://dmachard.github.io/posts/0034-dnscollector-dnstap-to-log-files/Wed, 10 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0034-dnscollector-dnstap-to-log-files/Example to collect dnstap messages from dns servers and backup-it in log fileshttps://dmachard.github.io/posts/0035-dnscollector-grafana-prometheus/Wed, 10 Nov 2021 00:00:00 +0100https://dmachard.github.io/posts/0035-dnscollector-grafana-prometheus/Overview of the DNS-collector tool, an open-source DNS data collectorhttps://dmachard.github.io/posts/0014-initial-setup-ansible/Sat, 23 Oct 2021 00:00:00 +0100https://dmachard.github.io/posts/0014-initial-setup-ansible/This tutorial explains how to make the initial setup of ansible.https://dmachard.github.io/posts/0013-ansible-almalinux-installation/Wed, 20 Oct 2021 00:00:00 +0100https://dmachard.github.io/posts/0013-ansible-almalinux-installation/This post will details how to install ansible on AlmaLinux 8.4.https://dmachard.github.io/posts/0011-powerdns-dnsdist-doh-servers/Wed, 20 Oct 2021 00:00:00 +0100https://dmachard.github.io/posts/0011-powerdns-dnsdist-doh-servers/The goal of this tutorial is to send all your local DNS queries (udp/tcp) to a pool of DoH public resolvershttps://dmachard.github.io/posts/0012-squid-run-docker/Wed, 20 Oct 2021 00:00:00 +0100https://dmachard.github.io/posts/0012-squid-run-docker/This tutorial explained how to deploy the following Squid 5https://dmachard.github.io/posts/0023-fork-opensource-project-guide/Tue, 05 Oct 2021 00:00:00 +0100https://dmachard.github.io/posts/0023-fork-opensource-project-guide/How to fork and pull requesthttps://dmachard.github.io/posts/0009-powerdns-dnsdist-pool-resolvers/Tue, 28 Sep 2021 00:00:00 +0100https://dmachard.github.io/posts/0009-powerdns-dnsdist-pool-resolvers/The goal is to send all your local DNS queries (udp/tcp) to a pool of public resolvershttps://dmachard.github.io/posts/0008-creditagricole-client-python/Mon, 27 Sep 2021 00:00:00 +0100https://dmachard.github.io/posts/0008-creditagricole-client-python/Récupérer ses opérations bancaires stockées par le Crédit Agricole.https://dmachard.github.io/posts/0006-powerdns-dnsdist-dnstap-tls/Wed, 08 Sep 2021 00:00:00 +0100https://dmachard.github.io/posts/0006-powerdns-dnsdist-dnstap-tls/This post will detail how to wrap your outgoing dnstap stream with TLS using stunnelhttps://dmachard.github.io/posts/0005-powerdns-dnsdist-api-tls/Wed, 08 Sep 2021 00:00:00 +0100https://dmachard.github.io/posts/0005-powerdns-dnsdist-api-tls/This post will detail how to wrap your DnsDIST webserver/API and dnstap stream with TLShttps://dmachard.github.io/posts/0007-dnscollector-install-binary/Wed, 08 Sep 2021 00:00:00 +0100https://dmachard.github.io/posts/0007-dnscollector-install-binary/This post details how to install the DNS-collectorhttps://dmachard.github.io/posts/0022-powerdns-build-docker/Thu, 24 Jun 2021 00:00:00 +0100https://dmachard.github.io/posts/0022-powerdns-build-docker/Developer guide to build pdns authoritaryhttps://dmachard.github.io/posts/0004-powerdns-dns-records-terraform/Sat, 22 May 2021 00:00:00 +0100https://dmachard.github.io/posts/0004-powerdns-dns-records-terraform/This post details how to manage DNS records with dynamic updateshttps://dmachard.github.io/posts/0003-powerdns-lua-records-terraform/Sat, 22 May 2021 00:00:00 +0100https://dmachard.github.io/posts/0003-powerdns-lua-records-terraform/This post details how to manage LUA records with dynamic updateshttps://dmachard.github.io/posts/0029-freshrss-install-guide/Wed, 10 Mar 2021 00:00:00 +0100https://dmachard.github.io/posts/0029-freshrss-install-guide/This post details how to run [*freshrsshttps://dmachard.github.io/posts/0028-prometheus-install-guide/Sun, 20 Dec 2020 00:00:00 +0100https://dmachard.github.io/posts/0028-prometheus-install-guide/This post details how to run prometheushttps://dmachard.github.io/posts/0018-powerdns-installation/Sun, 21 Jun 2020 00:00:00 +0100https://dmachard.github.io/posts/0018-powerdns-installation/PowerDNS authoritary servers installation procedurehttps://dmachard.github.io/posts/0021-dashboard-kibana-creditagricole/Sun, 21 Jun 2020 00:00:00 +0100https://dmachard.github.io/posts/0021-dashboard-kibana-creditagricole/Procédure de mise en oeuvre d’un dashboard Kibana permettant de suivre les opérations bancaires du crédit agricole.https://dmachard.github.io/posts/0017-elk-installation-centos7/Sun, 21 Jun 2020 00:00:00 +0100https://dmachard.github.io/posts/0017-elk-installation-centos7/This post details how to install ELK (ElasticSearch, Logstash, Kibana and also Filebeat) on CentOS7.https://dmachard.github.io/posts/0019-powerdns-rec-installation/Sun, 21 Jun 2020 00:00:00 +0100https://dmachard.github.io/posts/0019-powerdns-rec-installation/PowerDNS recursor servers installation on CentOS.https://dmachard.github.io/posts/0016-redhat-post-installation/Sun, 21 Jun 2020 00:00:00 +0100https://dmachard.github.io/posts/0016-redhat-post-installation/Post installation tunning for RedHat system family.https://dmachard.github.io/posts/0002-ntpd-logs-elk/Sat, 20 Jun 2020 00:00:00 +0100https://dmachard.github.io/posts/0002-ntpd-logs-elk/In this post, I will look at ntpd server to extract some ntp statitics.https://dmachard.github.io/posts/0001-dnstap-testing/Sat, 23 May 2020 00:00:00 +0100https://dmachard.github.io/posts/0001-dnstap-testing/This post details how to enable the dnstap feature in most popular dns server software.https://dmachard.github.io/posts/0025-docker-container-debug-startup/Thu, 18 Jul 2019 00:00:00 +0100https://dmachard.github.io/posts/0025-docker-container-debug-startup/Quelques commandes pour debugger un container qui ne démarre pashttps://dmachard.github.io/posts/0031-pycnic-api-python/Sun, 03 Mar 2019 00:00:00 +0100https://dmachard.github.io/posts/0031-pycnic-api-python/RESTful apihttps://dmachard.github.io/posts/0030-docker-swarm-installation/Sat, 09 Feb 2019 00:00:00 +0100https://dmachard.github.io/posts/0030-docker-swarm-installation/Procédure pour installer un clusteur docker swarm sur 3 machines.https://dmachard.github.io/posts/0027-grafana-installation-volume-persistent/Tue, 29 Jan 2019 00:00:00 +0100https://dmachard.github.io/posts/0027-grafana-installation-volume-persistent/This post details how to run grafana container with persistent volumehttps://dmachard.github.io/posts/0024-guacamole-docker-installation/Tue, 29 Jan 2019 00:00:00 +0100https://dmachard.github.io/posts/0024-guacamole-docker-installation/Guide d’installation de guacamole