Blog Comments - Back Links

Leaving a comment after reading a blog post is good for creating cyber-relations with different bloggers, as well as informing the blogger that there are others reading his/her blog. But one more advantage of comments is that they are also back-links, i.e. links that points back to your original blog. I have noticed this after seeing my site statistics lately to find that a big percentage of the visitors have been redirected there from my Blogger User Profile, which means that they have reached it through a comment I have posted here or here. Tags: Blog, Social, Gr33n Data

Ghacks.net

Todays site is Ghacks.net, which stands for Google Hacks. This site has some nice tips for searching with Google Site URL: http://www.ghacks.net/ Tags: Hacks, Google, Gr33n Data

Ubuntu 5.10 Released

The Ubuntu team announced the release of Ubuntu 5.10. Ubuntu is a Linux distribution for your desktop or server, with a fast and easy install, regular releases, a tight selection of excellent packages installed by default, every other package you can imagine available from the network, a commitment to security updates for 18 months after each release and professional technical support from many companies around the world. Source: http://www.ubuntu.com/newsitems/release510 Tags: Computers, Softwares, Linux, Ubuntu, Gr33n Data

Forbidden Folders

An Indian discovered that nobody can create a folder anywhere in MS Windows named as:

CON PRN LPT1 LPT2 LPT3 COM1 COM2 AUX NUL

The following file names are pre-assigned to certain devices.

CON: Console (screen display for output and keyboard for input) PRN: Printer. This is usually LPT1. LPT1: The first parallel printer/port. The printer device may be used only as an output device. LPT2: The second parallel printer/port (for output only). LPT3: The third parallel printer/port (for output only). COM1: or AUX: The first asynchronous communications adapter port. COM2: The second asynchronous communications adapter port. NUL: A nonexistent device to avoid the generation of output from programs.

You can just try it yourself. Tags: Computers, Windows, Gr33n Data

bBlog, B Blogger.

Do you have your own web server and want to have your own blog there? Then use bBlog, it is a personal publishing system written in PHP and released as free, Open Source software under the GPL.
bBlog: http://www.bblog.com/

Tags: Blog, Programming, PHP, Internet, Gr33n Data

This Day In History, October 12th

Christopher Columbus (1451 – 1506) (Cristóbal Colón in Spanish, Cristòfor Colom in Catalan, Cristóvão Colombo in Portuguese) was an explorer and trader who crossed the Atlantic Ocean and reached the Americas on October 12, 1492 under the flag of Castilian Spain. The entire period of the history of the Americas before this date usually known as Pre-Columbian, and the anniversary of this event, Columbus Day celebrated in many countries in the Americas as well as Spain. Columbus believed that the Earth was a relatively small sphere, and argued that a ship could reach the Far East via a westward course. The widespread notion that Columbus encountered opposition based on the idea that the Earth was flat is a literary myth created by Washington Irving. Columbus landed in the Bahamas and later explored much of the Caribbean, including the isles of Juana (Cuba) and Espanola (Hispaniola), as well as the coasts of Central and South America, but he never reached the present-day United States. The latin american country Colombia is named ofter him, as well as the city of Clumbia in South Carolina in USA,. Source: Wikipedia Tags: History, Geography, Gr33n Data

GRE Tutorial

GRE or Generic Routing Encapsulation - it has nothing to do with the Graduate Record Examination - is a tunneling protocol that was originally developed by Cisco for encapsulation of arbitrary kinds of network layer packets inside arbitrary kinds of network layer packets. This is brief tutorial on creating a GRE tunnel between two Cisco routes. Suppose that we have two sites; SiteA and SiteB. SiteA's router has interface Eth0 with the following IP address 10.0.1.1/24 and secondary IP address 1.0.1.1/24. Where the users (LAN) are connected to 10.0.1.0/24 subnet. The router has serial interface connected to the Internet (ISP). Same for SiteB, it has Eth0 with IP address 10.0.2.1/24 and secondary IP 1.0.2.1/24 where the users (LAN) are connected to 10.0.1.0/24 subnet. The router has serial interface connected to the Internet (ISP). Now we want to create a GRE tunnel in order for 10.0.1.0/24 and 10.0.2.0/24 subnets to communicate with each other.

Eth0--[RouterA]--S0{Internet}S0--[RouterB]--Etho

RouterA-Eth0: 10.0.1.1/24 & 1.0.1.1/24 RouterB-Eth0:10.0.2.1/24 & 1.0.2.1/24 RouterA-S0: Any IP given by the ISP RouterB-S0: Any IP given by the ISP

Configure the following on SiteA's Router

# interface Tunnel0 # ip address 192.168.1.1 255.255.255.0 # tunnel source Ethernet0 # tunnel destination 1.0.2.1 # ip route 10.0.2.0 255.255.255.0 Tunnel0

Configure the following on SiteB's Router

# interface Tunnel0 # ip address 192.168.1.2 255.255.255.0 # tunnel source Ethernet0 # tunnel destination 1.0.1.1 # ip route 10.0.1.0 255.255.255.0 Tunnel0

For more info see the following links:

• RFC 1701, Generic Routing Encapsulation (GRE)
• RFC 1702, Generic Routing Encapsulation over IPv4 networks
• RFC 2784, Generic Routing Encapsulation (GRE)
• RFC 2890, Key and Sequence Number Extensions to GRE
• Cisco, Configuring GRE Tunnel Over Cable
• Juniper, Configuring GRE Tunnels Dynamically
• Linux Advanced Routing & Traffic Control HOWTO

Tags: Networking, Technology, Cisco, Gr33n Data

Button Maker

Do you wan to create new buttons in your blog with custom text and colors?

Tags: Blog, Internet, Gr33n Data

Searching Into Your Blog Posts

You can add the following code into your blog template in order to have an add-on for searching into your blog posts. This can be added in your blog side-bar or anywhere else you want.

<!-- Technorati Search Box --> <!-- Author: Tarek Amr --> <!-- Date: 11 October 2005 --> <!-- http://gr33ndata.blogspot.com/ --> <h2 class="sidebar-title">Search Within This Blog</h2> <center> <form action="http://technorati.com/search.php" method="get"> <input type="text" id="kw-search" name="s"/> <input type="hidden" name="from" value="your-blog.blogspot.com" /> <input type="submit" class="btn" value="Search" /> <br><br> Technorati Search Box Powered By: <a href="http://gr33ndata.blogspot.com/"> Gr33n Data </a> </form> </center> <!-- End Technorati Search Box -->

Note: do not forget to replace "your-blog.blogspot.com" with your actual blog address. Tags: Search, Blog, Gr33n Data

Blogging From The Wireless Zone

This is me, writing this post while connected to the internet using Juniper NetScreen-5GT ADSL and Wireless firewall. After playing for a short while with the firewall's parameters from it WebUI, I managed to get the ADSL (PPPoA) connection as well as the wireless interface up. The wireless connection now is unencrypted however I am going to change it to WEP or WPA later on. It is really nice to try blogging while moving freely at you home. Tags: Networking, Security, Juniper, NetScreen Gr33n Data