Archive for June, 2009

GeoRSS Modules

June 10th, 2009 by admin | No Comments | Filed in Geolocation

GeoRSS is rising technology for encoding location as part of an Web feed to create feed channels to flow content across the web. GeoRSS feeds with location information will deliver content such as news articles, audio blogs, video blogs and text blog entries. Programs such as aggregators and web browsers render these web feeds with RSS which is the most known Web feed and syndication format.

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In GeoRSS, location content consists of geographical points, lines, and polygons of interest and related feature descriptions. GeoRSS feeds are designed to be consumed by geographic software such as location map generators.

At this juncture, the GeoRSS collaboration has accomplished work on two primary encodings which are known as GeoRSS Geography Markup Language and GeoRSS Simple. GeoRSS GML is a formal Open Geospatial Consortium (OGC) GML Application Profile, and supports many features than GeoRSS Simple and it will remarkably coordinate reference systems other than WGS84 latitude/longitude. This module can be used to extend both RSS 1.0 and 2.0, as well as Atom and other latest standard for feeds.

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The Top 10 Countries : Internet Connection Speed

June 8th, 2009 by admin | No Comments | Filed in Internet

A quarterly study by Akamai Technologies to the State of the Internet reports around 19 per cent Internet connections around the world were at speeds greater than 5 Mbps which is 21% increase at the end of 2008, the State of the Internet report tracks average connection speeds for countries around the world.

Check out these top 10 nations in terms of average Internet connection speed.

1. South Korea

South Korea gains the top position in Internet connection speed and broadband connectivity. It is the world’s No.1 with average connection speed of 15 Mbps, which is 10 times the global average!

During the whole year, South Korea has a modest seven per cent rise in their levels of high broadband adoption. South Korea is also ranked first in terms of high broadband connectivity with 69 per cent connections above 5 Mpbs.

2. Japan

Japan ranks 2nd in terms of Internet connection and high broadband connectivity, which is About Fifty four per cent of the connections in Japan are above 7 Mbps.

3. Hong Kong

Hong Kong ranks 3rd with in Internet connection speed of 6.9 Mbps and the country ranks fifth in terms of high broadband connectivity with 38 per cent of the connection above 5 Mbps.

4. Romania

Romania is at the 4th position with a Internet connection speed of 5.7 Mbps. However the country ranks third in terms of high broadband connectivity with 45% of the connection above 5 Mbps.

5. Sweden

Sweden score 5th position with a Internet connection speed of 5.6 Mbps. The country ranks fourth in terms of high broadband connectivity with 39 per cent of the connection above 5Mbps.

6. Switzerland

Switzerland scored the 6th h position with an Internet connection speed of over 5 Mbps. Switzerland however does not figure in the top ten lists of countries with high broadband connectivity.

7. Netherlands

Netherlands ranks 7th with an Internet connection speed of 4.9 Mbps and ranks and scored 7th in terms of high broadband connectivity with 28 per cent of the connections above 5 Mbps.

8. Belgium

Belgium is at the 8th position with an Internet connection speed of 4.7 Mbps. Belgium ranks sixth in terms of high broadband connectivity with 31 per cent of the connection above 5 Mbps.

9. Slovakia

Slovakia got the 9th position with an Internet connection speed of 4.5 Mbps. The country does not figure among the top ten in terms of high broadband connectivity.

10. Norway

Norway ranks 10th with Internet connection speed of 4.5 Mbps, it ranks fifth in terms of high broadband connectivity with 38 per cent of the connection above 5 Mbps.

Among 223 countries, India has been ranked at a dismal 115th in average Internet connection speeds.The country has an average Internet connection speed of just 772 Kbps compared with the global average of 1.5 Mbps.

China is lacking far behind in terms of Internet connection speed with an average Internet connection speed of 833 kbps.

United States is at the 17th position with an Internet connection speed of 3.9 Mbps, The United States managed to increase approximately 8 per cent from the average connection speed for the first quarter of 2008.

IPMASQ-IP Masquerading

June 6th, 2009 by admin | No Comments | Filed in linux server

IP Masquerading is a form of Linux networking process that allows one or more computers in a network to communicate without assigned IP addresses with the Internet using the Linux server’s assigned IP address. The IPMASQ server acts as a gateway, and the other devices are indiscernible behind it; consequently the outgoing traffic appears to other machines on the Internet to be coming from the IPMASQ server and not the internal PCs. While IPMASQ is a generic technology the server can be connected to other computers through LAN technologies like Ethernet, FDDI, Token Ring, as well as dial-up connections such as SLIP or PPP.

For instance, if a Linux host is connected to the Internet via PPP, Ethernet, etc, the IP Masquerade feature allocates other internal computers connected to this Linux box to reach the Internet. Linux IP Masquerading allows for this functionality although these internal machines don’t have an officially assigned IP address.

MASQ allows a set of machines to access the Internet via the MASQ gateway indiscernibly and the outgoing traffic will emerges to be from the IP MASQ Linux server itself to other machines on the Internet. Additionally as the added functionality, IP Masquerade provides the foundation to create a profoundly a secured networking environment hence to break the security of a well configured masquerading system and internal LAN should be considerably difficult to accomplish with a well-built firewall.

Who Can use IPMASQ?

* If you are on Linux host and connected to the Internet and you have few computers running TCP/IP connected to a Linux box on a local subnet.

* And/or if your Linux host has additional modem and acts as a SlIP or PPP server connecting other computers, which don’t have official or public assigned IP addresses.

* And if you want to save money and let those machines to communicate to the Internet without spending extra bucks for obtaining additional Public / Official TCP/IP addresses from your ISP.

Block IP using .htaccess file

June 5th, 2009 by admin | No Comments | Filed in IP Address Lookup, web server

.htaccess is a very powerful tool to keep control on who can do what on your website, it’s also fairly easy in case some things go wrong it will show Error 500 page so you can go back and make any change. Some time you may need to block certain IP which is ominous to your website/server or is trying to attack your server by creating load on it such as DDOS attack, then you can track and simply block such IPs using .htaccess file. Once you manage to get the IP address which is going to hit your server then you just need to add it in deny list of htaccess file.

All IPs which are listed in this list can’t access your site to any further extent and thus you can defend your server from such attacks. All you have to do is to add IP in your htaccess file which is located at root directory

You can put in as many IP address as you want in this list but you should make sure to use a robust firewall for your server, your host providers can manage your dedicated server for such security issues and will monitor it round the clock.

Essential Linux Port number

June 4th, 2009 by admin | 1 Comment | Filed in linux server, web server

Linux Port Numbers

These are the most essential Linux Port number you should aware of, whenever you are running a Linux VPS or dedicated server you should make sure that you don’t block these services with your firewall.

21 => FTP
22 => SSH
23 => Telnet
25 => SMTP Mail Transfer
43 => WHOIS service
53 => name server (DNS)
80 => HTTP (Web server)
110 => POP protocol (for email)
995 => POP over SSL/TLS
9999 => Urchin

111 => rpcbind
953 => rndc
143 => IMAP Protocol (for email)
993 => IMAP Secure
443 => HTTP Secure (SSL for https:// )

3306 = > MysQL Server
4643 => Virtuosso Power Panel

2082 => CPANEL
2083 => CPANEL – Secure/SSL
2086 => CPANEL WHM
2087 => CPANEL WHM – Secure/SSL
2095 => cpanel webmail
2096 => cpanel webmail – secure/SSL

Plesk Control Panel => 8443
DirectAdmin Control Panel => 2222
Webmin Control Panel => 10000

Water Treatment Plant- Google’s Data Center

June 1st, 2009 by admin | No Comments | Filed in Datacenter

Google has built a 20,000 square foot water treatment plant to gear up the canal water for use in its nearby data center. It will save electricity and water and will reduce operating costs. Watch this video with more information about the water treatment plant, which was first presented at the Google Efficient Data Centers hosted at Google headquarters in Mountain View. Video run time 3 minutes.

This is the way they’re trying to make significant reductions in resource usage while meeting service requirements. It would be the best practices for improving data center efficiency and making it truly sustainable.