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Category: Configurations (Linux)

INSTALL IPTABLES IN DEBIAN 11 (BULLSEYE)

Rumi, February 26, 2024February 26, 2024

In this article you will learn how to uninstall default nftables framework, install iptables Debian 11 (Bullseye) and basic rules initial configuration. Uninstall nftables and its Dependencies IPtables is being replaced by nftables starting with Debian 10 Buster. Debian 11 comes with nftables framework. To install iptables first we need uninstall nftables and its dependencies. SSH…

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Softether with DNSMasq on Debian 11

Rumi, February 26, 2024

What is SoftEther A Free Cross-platform Multi-protocol VPN program, as an academic project from University of Tsukuba. It is a single server which support SSL-VPN (HTTPS) and 6 major VPN protocols (OpenVPN, IPsec, L2TP, MS-SSTP, L2TPv3 and EtherIP). I would like to also highlight the VPN over ICMP and VPN over…

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Administrations

Setting Up a Proxmox Backup Server

Rumi, February 24, 2024February 26, 2024
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Installing Laravel 9 with php 8.1 and Apache2 using Ubuntu 22

Rumi, February 11, 2024

Connect to your ubuntu instance. 1. Install Apache sudo apt update sudo apt install apache2 sudo systemctl status apache2 2. Install PHP 8.1 sudo apt install software-properties-common sudo add-apt-repository ppa:ondrej/php sudo apt install php8.1 libapache2-mod-php8.1 sudo systemctl restart apache2 3. Install required PHP extensions for Laravel 9 sudo apt install…

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Fixing Ubuntu Repository

Rumi, February 11, 2024

Just a little tweaking around with my Ubuntu 22 on cloud init image- cp /etc/apt/sources.list /etc/apt/sources.list.bak sudo sed -i -re ‘s/([a-z]{2}\.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g’ /etc/apt/sources.list

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How to change shared public IP of Virtualmin for all domain hosts

Rumi, February 4, 2024

Steps are pretty straight forward. Step-1: Under > Webmin > Networking > Network Configuration > Network Interfaces You need your VM or server console access. Update the new IP with the old one from the correct interface. You will lose the connection. Reboot the server and re-login to webmin/virtualmin interface….

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PHPSysinfo CentOS 7 Installer Script

Rumi, January 23, 2024

Intended to to deploy on a barebone fresh CentOS installation with Apache and PHP- !#/bin/sh ################################################# # Server Configuration for Centos 6.8 Final # # Don’t use port 7071 # Updated by Rumi- hasan@servermart.net # ################################################# ## updating packages sudo yum update -y ## installing dependencies sudo yum install unzip…

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Destroy Linux operating system with fork bomb

Rumi, January 20, 2024

If you don’t want to completely destroy your Linux system but just neutralize it, you can go with a fork bomb using the following command: :(){ :|: & };: This will create a process which will duplicate it self infinitely until the system crash. If you are in a situation…

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Use sudo su to login without any password prompt

Rumi, January 15, 2024

Step 1 Edit sudoers file with command visudo: $ visudo You should get something similar to this content: # # This file MUST be edited with the ‘visudo’ command as root. # # Please consider adding local content in /etc/sudoers.d/ instead of # directly modifying this file. # # See…

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Disable gpgcheck while running updates

Rumi, January 12, 2024

Problem Statement: # su -c ‘yum install *.rpm’ which produced a long list of packages and depchecks, apparently successfully, but then gave: Install 50 Package(s) Total size: 436 M Installed size: 436 M Is this ok [y/N]: y Downloading Packages: Package libobasis3.3-en-US-base-3.3.0-6.x86_64.rpm is not signed [dave at davehost RPMS]$ Resolution:…

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Computing and Public Key Infrastructure Savvy from Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & Naitonal PKI Root and Enterprise 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) and at Oracle Corporation as Principal Technology Solution (Cloud) Architect.

And currently being employed at Huawei Technologies (Bangladesh) Ltd. as Advanced Business Development Lead (Cloud) in the south asia region.

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

Tags

Apache Bind Cacti CentOS CentOS 6 CentOS 7 Debain Debian Debian 10 Debian 11 Debian 12 DKIM DNS Docker icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx pfsense php Postfix Proxmox RDP Softether SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin Windows 10 XCP-NG zimbra

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