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Category: Administrations

VPNGATE from SoftEther Community

Rumi, September 4, 2022

VPN Gate Academic Experiment Project is an online service as an academic research at Graduate School of University of Tsukuba, Japan. The purpose of this research is to expand the knowledge of “Global Distributed Public VPN Relay Servers” . How does VPN Gate work? VPN Gate network consists of many…

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Remove DNSCACHE from zimbra services.

Rumi, September 3, 2022

If you will get a prompt stating something like “Port conflict detected: 53 (zimbra-dnscache)” with a prompt to hit ENTER to continue, you can just hit enter and let the installation/upgrade run out. Once everything is running, you will see that the Zimbra DnsCahe service is in a stopped state….

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Redirect all request to public/ folder in laravel 5

Rumi, August 19, 2022

There are two solutions: 1. Using .htaccess with mod_rewrite RewriteEngine on RewriteCond %{REQUEST_URI} !^public RewriteRule ^(.*)$ public/$1 [L] 2. You can add a index.php file containing the following code and put it under your root Laravel folder (public_html folder). <?php header(‘Location: public/’); Src: https://stackoverflow.com/questions/38040502/how-do-you-redirect-all-request-to-public-folder-in-laravel-5

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Install MySQL 5.7 on CentOS 7

Rumi, August 10, 2022

Preqrequsite: It’s better to have installed development tools and disable NetworkManager for a produciton envrionment. You can optionally follow the steps- Disabling NetworkManager: systemctl stop NetworkManager systemctl disable NetworkManager Install Development Tools: yum group install “Development Tools” Remove MariaDB pre-installed libraries- yum -y remove mariadb-libs Enable MySQL Repository First of…

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Postfix SMTP Rotating IP using IPTables

Rumi, August 1, 2022

I got 5 Public IPs. i’m Gonna configure them, so Postfix can use multiple interfaces/ips for outgoing smtp connections. First we need creating Interface aliases for those 5 public IPs. In my system, using centos: # cd /etc/sysconfig/network-scripts/ # cp ifcfg-eth0 ifcfg-eth0:1 Edit ifcfg-eth0:1 # vi ifcfg-eth0\:1 DEVICE=eth0 <– default…

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Windows IP settings from old Windows network adapters after card replacement

Rumi, July 25, 2022

After replacing an old motherboard with a new one, the NIC is different, has a new MAC address and generally needs a new TCP/IP configuration. However the old NIC is still somewhere there with its designated IP address and the rest. Question: is it possible to retrieve those settings (most important…

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Build PPPoE server using PfSense

Rumi, June 29, 2022

Before building a PPoE system, it is estimated to assume that we’re building it on the following principal and prerequisite conditions- It’ll be a NAT PPPoE router At least 2 Interface we’ll be needing- 1 for WAN/Internet/Uplink and the other for LAN/PPoE user. A reserved LAN IP for PPPoE server…

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Enabling Ping requests to OCI Instance

Rumi, June 29, 2022

If you want to test with Ping requests you’ll need to modify the Ingress rules on the security list associated with the VCN, Subnet, network device, thing, what ever, to allow ICMP packets. Allowing ICMP traffic is not required, it’s an option. Please only take this option if you understand…

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Convert VirtualBox VM to ProxMox VE

Rumi, June 24, 2022June 24, 2022

On the VirtualBox host, launch VirtualBox Right click the VM to convert > Settings Select Storage from the left navigation Click the virtual hard disk and copy the Location value for the full path of the disk to the clipboard Right click on the Start menu > Run > type…

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Install MariaDB 10 on Centos or Springdale Linux

Rumi, June 18, 2022

Step 1: Add MariaDB Yum Repository Start by adding the MariaDB YUM repository file MariaDB.repo for RHEL/CentOS and Fedora systems. # nano /etc/yum.repos.d/MariaDB.repo Now add the following lines to your respective Linux distribution version as shown. [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/10.1/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1

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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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