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.

Obtaining pfsense 2.2.4 as ISO

Rumi,

PFSense is a very strong firewall as my alternative for Endian (BSD Vs. Redhat-Linux) Here’s the direct download link- http://files.nl.pfsense.org/mirror/downloads/pfSense-LiveCD-2.2.4-RELEASE-amd64.iso.gz How to extract? gzip -d pfSense-LiveCD-2.2.4-RELEASE-amd64.iso.gz Voila! your unzipped ISO is now available. 🙂

Continue Reading

Install Openmediavault on Debian Wheezy/7

Rumi,

First Install Debian minimal Configure your Debian repositories Update the repository sources and add the contrib and non-free repositories. nano /etc/apt/sources.list It should look something like this: deb http://ftp.us.debian.org/debian/ wheezy main contrib non-free deb-src http://ftp.us.debian.org/debian/ wheezy main contrib non-free deb http://security.debian.org/ wheezy/updates main contrib non-free deb-src http://security.debian.org/ wheezy/updates main contrib…

Continue Reading

Add windows client to zenoss monitoring

Rumi,

Allow ICMP Through Firewall Firstly you need to allow incoming ICMP ping request since this is the way Zenoss checks if the system is online. Go to: Server Manager -> Configuration -> Windows Firewall with Advanced Security -> Inbound Rules Do the following: Enable rule “File and Printer Sharing (Echo…

Continue Reading

NFS Firewall

Rumi,

Dynamic ports cannot be protected by port filtering firewalls such as iptables. First, you need to configure NFS services to use fixed ports. Open /etc/sysconfig/nfs, enter: # vi /etc/sysconfig/nfs Modify config directive as follows to set TCP/UDP unused ports: # TCP port rpc.lockd should listen on. LOCKD_TCPPORT=lockd-port-number # UDP port…

Continue Reading

NFS Server and Client on CentOS

Rumi,

Assumptions: NFS Server IP: 172.16.5.100 NFS Client Node1: 172.16.5.101 NFS Client Node2: 172.16.5.102 NFS Client Node3: 172.16.5.103 NFS Client Node4: 172.16.5.104 On the NFS Server & All Client machine as well: yum install nfs-utils nfs-utils-lib Edit the exports file that shows what to share and with whom. So run:

Continue Reading

Enable mod_rewrite on Apache for Debian

Rumi,

To enable and load mod_rewrite, do the following. $ sudo a2enmod rewrite Then open up the following file, and replace every occurrence of “AllowOverride None” with “AllowOverride all”. $ sudo vi /etc/apache2/sites-available/default or $ sudo vi /etc/apache2/sites-available/000-default Finally, restart Apache2. $ sudo service apache2 restart

Continue Reading

Convert .p12 bundle to server certificate and key files

Rumi,

Seperate Private Key and Certificate file #Generate certificates bundle file openssl pkcs12 -nokeys -in server-cert-key-bundle.p12 -out server-ca-cert-bundle.pem #Generate server key file. openssl pkcs12 -nocerts -nodes -in server-cert-key-bundle.p12 -out server.key Convert a PKCS#12 file (.pfx .p12) containing a private key and certificates to PEM openssl pkcs12 -in keyStore.pfx -out keyStore.pem -nodes…

Continue Reading