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Category: Administrations

Remove Old Kernels of Debian/Ubuntu

Rumi, April 1, 2022

To find out the current version of Linux kernel running on your system, use the following command. $ uname -sr Linux 4.12.0-041200-generic To list all installed kernels on your system, issue this command. $ dpkg -l | grep linux-image | awk ‘{print$2}’ linux-image-4.12.0-041200-generic linux-image-4.8.0-22-generic linux-image-extra-4.8.0-22-generic linux-image-generic Remove Old Unused Kernels…

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Reboot Windows 10 using RDP

Rumi, March 26, 2022

This article is for sysadmins who know better, wanting to Shut down or Restart (or even enter Sleep) over RDP anyway. Using Command Prompt Open a Command Prompt a. To initiate a Shut down, type: shutdown /s /t 0 then press Enter

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Enable TLS 1.0 in Firefox Browser

Rumi, March 26, 2022

Firefox 43 supports TLS 1.0, 1.1, and 1.2 by default. You shouldn’t need to make any changes, but you can double-check the settings here if you like: (1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful….

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Add SNMP to Windows Server- 2012

Rumi, March 19, 2022

This step-by-step article describes how to configure the Simple Network Management Protocol (SNMP) Service in Windows Server 2012/2012R2. We will install SNMP service and configure SNMP security. SNMP Service Installation Open Server Manager and then click Add Roles and Features. In Select Features, check the box next to SNMP Service….

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Solving A remote code execution vulnerability exists in the Credential Security Support Provider protocol (CredSSP) on Windows RDP

Rumi, March 18, 2022

WORKAROUND Use the group policy settings changes described below to rollback the changes to ‘Vulnerable’ state to allow RDP access. 1. Open Group Policy Editor, by executing gpedit.msc 2. Policy path: Computer Configuration -> Administrative Templates -> System -> Credentials Delegation Run gpedit.msc and expand Administrative Templates

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Install phpIPAM on Ubuntu 20.04/18.04

Rumi, December 25, 2021December 25, 2021

The objective of this guide is to help you Install and Configure phpIPAM on Ubuntu 20.04/18.04 Linux distribution. phpIPAM is an open-source php-based web IP address management application (IPAM). Its goal is to provide light, modern and useful IP address management. phpIPAM uses MySQL database backend and jQuery libraries, Ajax and HTML5/CSS3…

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Fixing Vesta CP Exim Email Incoming error with T=local_delivery defer (-1): Malformed value “0MM”

Rumi, December 24, 2021December 25, 2021

******** Applicable for vesta cp 1.0.0-5 version) ******** If you lately encounter an issue with mail incoming with vesta cp after an auto update took place, your /var/log/exim/main.log shows something similar below- 2021-12-19 03:39:42 1mxheU-000374-0o == mail@domain.com R=localuser T=local_delivery defer (-1): Malformed value “0MM” (expansion of “${extract{6}{:}{${lookup{$l$…. Step-1 Finding vesta…

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Pushing Docker Images to a Docker Repository

Rumi, December 21, 2021

The next logical step after creating a new image from an existing image is to share it with a select few of your friends, the whole world on Docker Hub, or other Docker registry that you have access to. To push an image to Docker Hub or any other Docker…

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Docker Commands

Rumi, December 21, 2021

Working with Docker Images Docker containers are built from Docker images. By default, Docker pulls these images from Docker Hub, a Docker registry managed by Docker, the company behind the Docker project. Anyone can host their Docker images on Docker Hub, so most applications and Linux distributions you’ll need will have…

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Install Docker on Debain 10

Rumi, December 21, 2021

Installing Docker The Docker installation package available in the official Debian repository may not be the latest version. To ensure we get the latest version, we’ll install Docker from the official Docker repository. To do that, we’ll add a new package source, add the GPG key from Docker 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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Apache Bind Cacti CentOS CentOS 6 CentOS 7 Debain Debian Debian 10 Debian 11 Debian 12 DKIM Docker endian icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx pfsense php Postfix powerdns Proxmox RDP SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin Windows 10 XCP-NG zimbra

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Recent Posts

  • 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
  • Key Lessons in life April 26, 2025
  • Create Proxmox Backup Server (PBS) on Debian 12 April 19, 2025
  • Add Physical Drive in Proxmox VM Guest April 19, 2025

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  • Updated Repository of Debian 10 (Aug 2025)
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