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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.

CRYPTBOT Secure web-Mail

Rumi, December 29, 2011

Security Purposes   The CryptBot Secure web-Mail™ was developed for solving the e-mail security problems, especially the attacks of junk or spam e-mails and viruses. This web-based security application also serves you with the digital identity and confidentiality of your e-mail by using the PKI (Public Key Infrastructure); digital signature…

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Communigate Mail Pro

Rumi, December 29, 2011

  The CommuniGate Pro Secure Mail (S/MIME) functionality is based on the Public Key technology. Using S/MIME, you can: digitally sign your message, so the recipient can: verify that the message has been really sent by you; verify that the message content has not been altered and that it was…

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Recover MySQL root Password

Rumi, December 27, 2011

You can recover MySQL database server password with following five easy steps. Step # 1: Stop the MySQL server process. Step # 2: Start the MySQL (mysqld) server/daemon process with the –skip-grant-tables option so that it will not prompt for password. Step # 3: Connect to mysql server as the…

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How to Allow MySQL Client to Connect to Remote MySQL server

Rumi, December 19, 2011

By default, MySQL does not allow remote clients to connect to the MySQL database. If you try to connect to a remote MySQL database from your client system, you will get “ERROR 1130: Host is not allowed to connect to this MySQL server” message as shown below. $ mysql -h…

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Recover MySQL root Password

Rumi, December 19, 2011

  Step # 1 : Stop mysql service # /etc/init.d/mysql stop Output: Stopping MySQL database server: mysqld. Step # 2: Start to MySQL server w/o password: # mysqld_safe –skip-grant-tables & Output:[1] 5988 Starting mysqld daemon with databases from /var/lib/mysql mysqld_safe[6025]: started Step # 3: Connect to mysql server using mysql client:…

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Virtual USB and VBoxusergroup Troubleshoot on Linux Host

Rumi, December 16, 2011December 16, 2011

I faced USB issues on both Virtualbox installation on both Debian and CentOS linux host. I really didn't notice the urgency of vboxusers group in running VBox in headless mode! Anyway, following snippets of texts really did help me out solving my USB problems. All credits goes to the VBox…

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Centreon – Preconfigured nagios

Rumi, December 15, 2011December 15, 2011

Centreon is a network, system, applicative supervision and monitoring tool, it is based upon the most effective Open Source monitoring engine : Nagios. Centreon can be used as a Nagios GUI which gather a lots of new features. Learn more: http://www.centreon.com

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CentOS – Enable or Disable SELinux in command interface

Rumi, December 14, 2011

From the command line, you can edit the /etc/sysconfig/selinux file. This file is a symlink to /etc/selinux/config. The configuration file is self-explanatory. Changing the value of SELINUX or SELINUXTYPE changes the state of SELinux and the name of the policy to be used the next time the system boots. [root@host2a…

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VBoxHeadless – Running Virtual Machines With VirtualBox 4.0 On A Headless CentOS 5.6 Server

Rumi, December 14, 2011December 14, 2011

This guide explains how you can run virtual machines with VirtualBox 4.0 on a headless CentOS 5.6 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to…

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Icinga Sample Host cfg file to monitor Windows Server

Rumi, December 8, 2011December 8, 2011

define host{ use             windows-server  ; Inherit default values from a template host_name blk-smsgw ; The name we're giving to this host alias           Windows Server       ; A longer name associated with the host address        10.10.10.1    ; IP address of the host         } definehostgroup{ alias           Windows Servers ; Long name…

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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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