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Category: Collected Articles

Install PHP 7 on CentOS 7

Rumi, May 24, 2020

Enabling Remi repository PHP 7.x packages are available in several different repositories. We’ll use the Remi repository which provides newer versions of various software packages including PHP. The Remi repository depends on the EPEL repository. Run the following commands to enable both EPEL and Remi repositories: sudo yum install epel-release yum-utils sudo yum…

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Ubuntu Firewall – UFW useful commands

Rumi, May 17, 2020

Prerequisites To follow this tutorial, you will need one Debian 10 server with a sudo non-root user, which you can set up by following Steps 1-3 in the Initial Server Setup with Debian 10 tutorial. Step 1 – Installing UFW Debian does not install UFW by default. If you followed…

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Java plug-in does not work in Firefox after installing Java

Rumi, May 1, 2020

Tested on Firefox 42 (old release) and Sea-Monkey 2.46/2.49. There are several workaround options. The simplest method is noted first and is recommended. The remaining available options are not recommended for non-technical users. Option 1: Add property name dom.ipc.plugins.java.enabled in Firefox preferences 1. Launch Firefox 2. Type about:config in the…

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Squid as Transparent Proxy on CentOs 6.4

Rumi, March 6, 2020

In this tutorial I am going to configure squid acting as transparent proxy what does it means? It means we have no part of configurations on the client end, just to setup squid in transparent proxy mode so it will sits between client and internet. And redirect their port 80 requests to 3128 port which is…

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How to define outgoing firewall rules on pFSense

Rumi, February 24, 2020

LAN rules are defining rights to access internet services from your local network. So, if you block port 80 and 443 nobody from your LAN will be able to access internet. WAN rules are defining access to the resources in your LAN (or DMZ) from the internet. In this short…

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Join Several Partition Together To Form a Single Larger One On a Linux Using mhddfs

Rumi, February 20, 2020

The easiest and fastest solution is to use mhddfs driver on Linux operating systems. It is a fuse-based file system for unifying several mount points into one.  The mhddfs (fuse) file system allows to unite a several mount points (or directories) to the single one. So a one big filesystem…

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Resemblance- Life and Times of a Rebel

Rumi, February 8, 2020
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How to Setup a Multi-Protocol VPN Server Using SoftEther

Rumi, September 14, 2019

SoftEther VPN is one of the world’s most powerful and easy-to-use multi-protocol VPN software, made by the good folks at the University of Tsukuba, Japan. It runs on Windows, Linux, Mac, FreeBSD and Solaris and is freeware and open-source. You can use SoftEther for any personal or commercial use free…

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Install and integrate DKIM with OpenDKIM and Postfix on a CentOS 6

Rumi, August 24, 2019February 4, 2024

UPDATE THE SYSTEM Before going any further, make sure you’re in a screen session and your system is fully up-to-date by running: ## screen -U -S opendkim-screen ## yum update ENABLE EPEL REPOSITORY OpenDKIM is available in the EPEL repository, so we need to enable it on the system before…

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Setup a Site to Site IPsec VPN With Strongswan and PreShared Key Authentication

Rumi, March 25, 2019March 25, 2019

Today we will setup a Site to Site ipsec VPN with Strongswan, which will be configured with PreShared Key Authentication. After our tunnels are established, we will be able to reach the private ips over the vpn tunnels. Get the Dependencies: Update your repository indexes and install strongswan: $ apt…

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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 squid SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin XCP-NG zimbra

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