Author: Rumi

Hasan T. Emdad is an ICT Solution Architect, Project Manager with 12+ year expertise in HW selection, OS expertise on Linux and MS, Supervising Application SW on Pearl, Java, dot Net and PHP with DB experience of MySQL, Postgre, MS and Oracle. He was involved in setting up several Turn Key ICT including Telecom based projects on various government and autonomous bodies in the country. Developed more than 50 applications running with different operators and users. Managing a team of more than 10 in-house engineers and developers and manages an outsourcing team experts and contributors. Very recently engineered Public Key Infrastructure (PKI) on Enterperise and Root Certifying Authority and deployed scalable Cloud Computing and Managed Services. He has post graduated (MBA) from University of Dhaka, Bangladesh.

Softether Auto Installer on CentOS/Debian/Ubuntu (Backward compatible edition)

Rumi, April 17, 2021

Softether Auto Install Script for multi platforms updated version Softether VPN server latest version v4.27-9666-beta-2018.04.21 Revised to last known stable version due to compilation error from their latest release An open source VPN project from University of Tsukuba Japan Centos 6 or 7 x64 Debian 8 (jessie) (Not compatible for…

Install LAMP with PHP-FPM on Ubuntu 20

Rumi, April 4, 2021

Step 1 – Installing Apache Apache web server debian packages are available under the default repositories. Login to your Ubuntu system with sudo privileges account. Open a terminal and execute the following commands: sudo apt update sudo apt install apache2 libapache2-mod-fcgid The above commands will install Apache and FastCGI module…

Upgrade Python 2.7 to 3.6 and installing pip on CentOS 7

Rumi, April 2, 2021

Installing Development Tools Development tools are required for building Python modules. To install the necessary tools and libraries type: sudo yum groupinstall ‘Development Tools’ Enable Software Collections (SCL) Software Collections , also known as SCL is a community project that allows you to build, install, and use multiple versions of…

Install wkhtmltopdf 0.12.5 on Centos 7

Rumi, April 2, 2021April 2, 2021

Install Dependencies yum install fontconfig libXext freetype libpng zlib libjpeg-turbo libpng libjpeg openssl icu libX11 libXext libXrender xorg-x11-fonts-Type1 xorg-x11-fonts-75dpi Install wkhtmltopdf sudo yum install -y https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox-0.12.5-1.centos7.x86_64.rpm Test wkhtmltopdf http://www.google.com google.pdf Src:: https://otodiginet.com/software/tools/how-to-install-and-using-wkhtmltopdf-on-centos-7/

Configure DomainKeys- DKIM (OpenDKIM) with Postfix on CentOS 7

Rumi, March 31, 2021March 31, 2021

OpenDKIM is method to digitally sign & verify emails on the mail servers using public & private keys. In other words opendkim implements the DKIM (DomainKeys Identified Mail) standard for signing and verifying email messages on a per-domain basis. DomainKeys are implemented to reduce the chances of outgoing mails to…

Install LibreNMS Monitoring Tool with Nginx on Ubuntu 20.04

Rumi, March 30, 2021March 30, 2021

First, it is recommended to update your system packages to the latest version. You can do it with the following command: apt-get update -y After updating all packages, install all the dependencies required for LibreNMS with the following command: apt-get install rrdtool whois fping imagemagick graphviz mtr-tiny nmap python3-mysqldb snmp…

Setup mail server on centos 7 using postfix and dovecot

Rumi, March 30, 2021

Installing packages Step 1 » Assign hostname for the server using the below command. [root@krizna ~]# hostnamectl set-hostname mail.krizna.com Step 2 » Make a host entry with your IP in /etc/hosts file. 172.27.0.51 mail.krizna.com Step 3 » Now start installing packages. [root@krizna ~]# yum -y install postfix dovecot After package…

Sectigo SSL certificate installation on Zimbra

Rumi, March 30, 2021

1. Login to your Zimbra Admin Console using a browser. 2. In the left navigation pane under Home click Configure. Click Certificate. 3. On the right of the Zimbra Admin console click on the settings icon and select Install Certificate. 4. The Certificate Installation Wizard will pop up. 5. Under…

Install LAMP with PHP 7.4 on FastCGI/CGI configuration on CentOS 7

Rumi, March 24, 2021

Step 1 – Setup Yum Repository In the first step install all the required yum repositories in your system used in the remaining tutorial for various installations. You are adding REMI, EPEL, Webtatic & MySQL community server repositories in your system. CentOS / RHEL 7 yum install epel-release rpm -Uvh…

How to enable Proxy Settings for Yum Command on RHEL / CentOS Servers

Rumi, March 24, 2021

This can be easily achieved with yum config file “/etc/yum.conf“. Under main section define the proxy settings like below: ……………… proxy=http://<Proxy-Server-IP-Address>:<Proxy_Port> proxy_username=<Proxy-User-Name> proxy_password=<Proxy-Password> ……………… Save and exit the file and start using the yum command. Sample yum Config file with proxy settings is shown below :