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Stunnel on Debian/Ubuntu with Squid

Rumi, October 27, 2015

What’s Stunnel The Stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server. It can be used to add SSL functionality to commonly used inetd daemons like POP2, POP3, and IMAP servers without any changes in the program’s code. What…

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Creating PPTP on Pfsense 2.2.4

Rumi, October 20, 2015October 20, 2015

If you want to build a PPTP server graphically build using pfsense nice looking interface, then please do follow the steps below. Here I assume, a proper NAT firewall is already running in the pfsense configuration. Step-1 Go to VPN > PPTP from top menu Under “Configuration” tab- PPTP redirection…

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1:1 NAT firewall using pfsense

Rumi, October 19, 2015October 19, 2015

Assuming you are planning to setup your server infrastructure behind firewall- pfsense. You have a Public IP- 114.130.56.x to be pointed to your private lan server with 192.168.14.x. Let’s begin- Step-1 Adding public IP to the WAN interface “Firewall > Virtual IPs ” as below- Step-2 Now move on the…

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Obtaining pfsense 2.2.4 as ISO

Rumi, October 17, 2015

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. 🙂

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Display Available Network Ethernet Interfaces

Rumi, October 10, 2015

List Network Interfaces Using ip Command Type the following command, enter: $ ip link show Sample outputs:

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Install Openmediavault on Debian Wheezy/7

Rumi, October 3, 2015April 27, 2018

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…

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Install Zenoss on CentOS 6 64bit

Rumi, September 27, 2015September 27, 2015

Minimal Hardware Requirements: Small Deployments (1 to 250 Monitored Devices) 4GB RAM 2 CPU Cores 1x 300GB, 10K RPM Drive Medium Deployments (250 to 500 Monitored Devices) 8GB RAM 4 CPU Cores 1x 300GB, 10K RPM Drive Large Deployments (500 to 1000 Monitored Devices) 16GB – 32GB RAM 8 CPU…

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Add windows client to zenoss monitoring

Rumi, September 27, 2015

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…

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NFS Firewall

Rumi, September 9, 2015

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…

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NFS Server and Client on CentOS

Rumi, September 9, 2015

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:

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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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