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How to Block IP address of any country with iptables

Sometime it is necessary to block incoming connection or traffic from specific remote host. iptables is administration tool for IPv4 packet filtering and NAT under Linux kernel. Following tip will help...

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How to Allow or Deny countries with Apache htaccess

First you need to understand the meaning of these two rules in the htaccess file. If you set “deny” in the script for countries “US,CA” (USA and Canada), all traffic from USA or Canada will be blocked....

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A brief to various iptables commands

We will use an example based approach to examine the various iptables commands. In this first example, we will create a very simple set of rules to set up a Stateful Packet Inspection (SPI) firewall...

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How to set up a basic email server with postfix and Dovecot

This article uses postfix as the mail transport agent (MTA), as opposed to sendmail, the default MTA for CentOS. Dovecot is used to allow users to access their email by either imap or pop protocols. We...

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How to increase PageRank In WordPress by Putting NoFollow Relationship

Blogroll in WordPress displays a list of blogger’s favorite blogs in the sidebar of their blog. Blogroll provides links to external blogs in easily managed way. Some webmasters also use Blogroll to...

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How to Change Default Search Setting Inside Google Chrome

Chrome is Google’s newly released browser. It’s currently available for Windows only .Google Chrome have comed up with many few features which was not owned by other browser  but some features are...

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How to Configure Advanced TCP/IP settings in Windows

The Advanced TCP/IP dialog will allow you to configure settings relative to DNS, WINS and specify multiple IP Addresses and Gateways. To bring up the Advanced TCP/IP Settings dialog, simply right click...

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How to create a boot CD with the specified kernel in Linux

The kernel in Fedora Core 2 and higher is too big to fit on a floppy disk, so you’ll have to create a boot CD instead. Here are the steps. 1. Each installed kernel has a dedicated subdirectory for its...

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How to resolve PHP Pecl Memcached module installation problems

I am using on several projects memcached and on the application side the php memcached module. This can be installed as any pear/pecl module, or from source by downloading the source .tgz and running...

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How To List Down Linux Partition Tables

At times, listing down all partition tables and mounted linux devices gives us a better view of what storage devices and partition types does your linux box have. Here’s a simple approach on how to...

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