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Category: Configurations (Linux)

Endian Community (3.x)- network configuration using CLI- Netwizard

Rumi, February 20, 2019

After you login in you Endian Appliance, simply issue the following command: root@endian # netwizard You will be asked a couple of questions. If the network has already been configured, the current values are shown: simply press Enter if you want to keep that value. The snippet below shows some…

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Endian Community (2.5.1)- Change the green IP address from console

Rumi, February 18, 2019

Management URL: https://192.168.0.15:10443 Green IP:       192.168.0.15/24 —————– 0) Shell 1) Reboot 2) Change Root Password 3) Change Admin Password 4) Restore Factory Defaults Choice: 0[endian]: login root’s password: Welcome to Endian Firewall Appliance release 2.5-0 (Deployset #0) [endian] root: bash

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Install Percona XtraDB Cluster for MySQL 5.7 on Debian 8

Rumi, February 18, 2019

First of all, why we choose three nodes and not only two? In any cluster, the number of nodes should be odd, so in the case of disconnection of a node, we assume that the highest group of servers has the fresh data, and should be replicated to the down node…

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Configure Apache With Self-Signed TLS/SSL Certificate on Ubuntu 16.04

Rumi, February 10, 2019

Step 1: Generating the certificate First, let’s create a place to store the file. mkdir ~/certificates cd ~/certificates Generate CSR and private key. openssl req -x509 -newkey rsa:4096 -keyout apache.key -out apache.crt -days 365 -nodes It will ask for information for the certificate request. Complete with the appropriate information. Country…

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Install and setup Plex Media Server Ubuntu 16.04

Rumi, January 28, 2019

Plex is a free feature-rich media library platform that provides a way to store all your movies, shows, and other media in one place. You can access Plex from any device, whether you’re at home or on-the-go. There are many different media tools available in the world like, Kodi, Xmbc,…

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Vesta- How to set up master-slave DNS cluster

Rumi, January 28, 2019January 28, 2019

If you are looking for the options to avoid any DNS-related downtime or the way to manage dns across all server you have, you might consider to set up dns cluster. Create user dns-cluster on a server which will be used as dns slave On the second server (slave) with…

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Install Vesta Control Panel (vestacp) on Centos 7 with PHP-FPM and PHP 7.2

Rumi, January 28, 2019

I had few issues on my container and KVM on installing vestacp. Issues were like quite weird, such as- Post installation on KVM- it moved into emergency maintenance mode Post installation on LXC container- DNS resolution halted After hours and hours of search, found few root causes- I have to…

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SPF, DKIM, DMARC – Sample and perfect record values

Rumi, January 27, 2019

Sharing some sample record value of the post subject for future reference: SPF: domain.gov.bd. IN TXT “v=spf1 a mx ip4:1.2.3.4 ?all” DKIM: MDaemon._domainkey.domain.gov.bd. IN TXT “v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDIaJcNDjvJ6LJ/zyZCIOuaQiLMSC+FBfky8JMFE7LUGlP4LXwmpaKO3Z67x+PVXgYbbFU9nzLaFOfIXTbsCh6LYLBgQF+PNghbTAchQ59IEMrMRsTPCCg95+gKYRupN0B96Uz7rrXifZL8T+yl9MkpIlAsXXs7e8Vhzwa94NdVjQIDAQAB” DMARC: _dmarc.domain.gov.bd. 3600 IN TXT “v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:postmaster@domain.gov.bd; ruf=mailto:postmaster@domain.gov.bd; rf=afrf; pct=100; ri=86400” DMARC Generator:  https://www.unlocktheinbox.com/dmarcwizard/

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Enable DNSBL or RBL on Zimbra

Rumi, January 26, 2019

DNS-based Blackhole List (DNSBL) or Real-time Blackhole List (RBL) is an effort to fight spam emails. It is a blacklist of source IP addresses that have a reputation of sending spam emails. Most email systems can be configured to check these lists and block or flag emails that were sent…

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SSH Tunnel on PuTTY

Rumi, January 5, 2019

Most of you have probably used a tunnel with an SSH connection. What you probably weren’t aware of is that you can use a dynamic tunnel to access all remote infrastructure. Furthermore, you can specify a port and a destination IP to have direct access. This process is achieved through…

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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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