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1:1 NAT using Iptables on an OpenVPN Server

Rumi, October 2, 2025October 2, 2025

Keeping for future references- # Oct 28 23:57:58 2014 *filter :INPUT ACCEPT [2590:547311] :FORWARD ACCEPT [11426:731834] :OUTPUT ACCEPT [3989:328501] -A INPUT -i eth0 -j ACCEPT COMMIT # Completed on Tue Oct 28 23:57:58 2014 # Generated by iptables-save v1.3.5 on Tue Oct 28 23:57:58 2014 *mangle :PREROUTING ACCEPT [24964:3178001] :INPUT…

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Openvpn autostart on debian 12 cli client

Rumi, October 2, 2025October 2, 2025

To configure an OpenVPN client to autostart on a Debian 12 CLI system using systemd, follow these steps: Place the OpenVPN configuration file. Move your OpenVPN client configuration file (e.g., client.ovpn) to the /etc/openvpn/ directory and rename it with a .conf extension (e.g., client.conf). sudo mv /path/to/your/client.ovpn /etc/openvpn/client.conf Edit the…

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Site to Site (site 2 site a.k.a S2S) VPN using OpenVPN

Rumi, October 2, 2025

The video tutorial one is perfect enough. However those who like a textual documents can also undergo the followings- https://openvpn.net/as-docs/tutorials/tutorial–site-to-site-network.html  

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Updated Repository of Debian 10 (Aug 2025)

Rumi, September 5, 2025September 5, 2025

Standard sources.list for Debian 10 “Buster” Open the sources.list file with a text editor. Using nano is a common choice:bash sudo nano /etc/apt/sources.list Replace any existing lines with the following code. This configuration includes the main, contrib, and non-free components from the archive.bash deb http://archive.debian.org/debian/ buster main contrib non-free deb…

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Deploye Minio using docker

Rumi, September 5, 2025

Here’the docker compose file to run: version: ‘3.8’ services: minio: image: minio/minio:RELEASE.2024-06-26T01-06-18Z container_name: minio ports: – “9000:9000” – “9001:9001” volumes: – /mnt/data/minio:/data environment: MINIO_ROOT_USER: minioadmin MINIO_ROOT_PASSWORD: minioadmin command: server /data –console-address “:9001” Src: https://hub.docker.com/r/minio/minio/tags?name=RELEASE.2024-06-26T01-06-18Z

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Install valkey ubuntu 22.04

Rumi, August 30, 2025August 30, 2025

Install using the Percona repository This method ensures you get the latest version of Valkey and a consistent experience across different systems.  Add the Percona repository. The percona-release tool automatically adds the necessary repository and public keys.sh sudo apt update sudo apt install gnupg2 lsb-release -y wget https://repo.percona.com/apt/percona-release_latest.generic_all.deb sudo apt…

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MinIO with Let’s Encrypt SSL on Debian 12 – Step-by-Step Configuration

Rumi, August 1, 2025

Prerequisites Debian 12 server with root access Domain name pointing to your server’s public IP Basic familiarity with Linux command line Step 1: System Update and Dependencies sudo apt update && sudo apt upgrade -y sudo apt install -y wget curl gnupg2 software-properties-common Step 2: Install MinIO Download and install…

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How to Set Windows File Associations to Open .JNLP Files

Rumi, July 28, 2025

Document Details: To modify the file association to have JNLP files open with Java Web Start on a Windows XP, Windows 7/Windows Vista, Windows 8, or Windows 10 computer, follow the steps below: Windows 10: Go to the nhdeeds.com website, then click on Search County Records. Click to Accept Registry Disclaimer,…

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Removing CEPH from Proxmox Cluster

Rumi, July 23, 2025

I found this works well to completely remove ceph and config: systemctl stop ceph-mon.target systemctl stop ceph-mgr.target systemctl stop ceph-mds.target systemctl stop ceph-osd.target rm -rf /etc/systemd/system/ceph* killall -9 ceph-mon ceph-mgr ceph-mds rm -rf /var/lib/ceph/mon/ /var/lib/ceph/mgr/ /var/lib/ceph/mds/ pveceph purge apt purge ceph-mon ceph-osd ceph-mgr ceph-mds apt purge ceph-base ceph-mgr-modules-core rm -rf…

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Install Jitsi on Ubuntu 22.04 / 22.10

Rumi, April 30, 2025

Make sure your system is up-to-date and required packages are installed: Run as root or with sudo: # Retrieve the latest package versions across all repositories sudo apt update # Ensure support for apt repositories served via HTTPS sudo apt install apt-transport-https On Ubuntu systems, Jitsi requires dependencies from Ubuntu’s universe package repository. To ensure…

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Savvyfrom Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & PKI Naitonal Root and CA Infrastructure. Also engaged with several Offshore Software Development Team.

Worked with Orascom Telecom-Banglalink, Network Elites as VAS partner, BTRC, BTT (Turkey) , Mango Teleservices Limited and Access to Informaiton (A2I-UNDP)

Currently working at Oracle Corporation as Principal Technology Solution and Cloud Architect.

You can reach me [h.t.emdad at gmail.com] and I will be delighted to exchange my views.

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Recent Posts

  • 1:1 NAT using Iptables on an OpenVPN Server October 2, 2025
  • Openvpn autostart on debian 12 cli client October 2, 2025
  • Site to Site (site 2 site a.k.a S2S) VPN using OpenVPN October 2, 2025
  • Updated Repository of Debian 10 (Aug 2025) September 5, 2025
  • Deploye Minio using docker September 5, 2025
  • Install valkey ubuntu 22.04 August 30, 2025
  • MinIO with Let’s Encrypt SSL on Debian 12 – Step-by-Step Configuration August 1, 2025
  • How to Set Windows File Associations to Open .JNLP Files July 28, 2025
  • Removing CEPH from Proxmox Cluster July 23, 2025
  • Install Jitsi on Ubuntu 22.04 / 22.10 April 30, 2025

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