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...
View ArticleHow 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....
View ArticleA 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...
View ArticleHow 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...
View ArticleHow 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...
View ArticleHow 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...
View ArticleHow 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...
View ArticleHow 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...
View ArticleHow 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...
View ArticleHow 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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