Entries Tagged 'Technical' ↓
November 22nd, 2007 — Hardware, Software, Technical
It is now very easy to get common printers to work as network printers using CUPS. Thanks to www.linuxprinting.org and technology giants like HP releasing drivers for Linux. For your printer to work with Linux you have to get the following things:
1. CUPS - (www.cups.org)
2. Foomatic filters - (http://www.linux-foundation.org/en/OpenPrinting/Database/Foomatic)
3. Ghostscript - ( http://www.ghostscript.com/awki)
4. LSB (LINUX STANDARD BASE) Package - (http://www.linux-foundation.org/en/LSB)
(Please download the right package depending on your Hardware and distribution)
Most of the new releases of all the major distributions of Linux are LSB complaint.
Once you have all these packages installed, get the cups service up. Use the GUI or the command line to add the printer to CUPS.If your printer is not listed on CUPS, download the right drivers (PPD file) from the web. For some brands which have not released the drivers, you might be able to find open drivers, which might not give you the full functionality of the printer. Once you have added the printer on to CUPS, try and print a test page. If it comes all right you have your printer up and running on CUPS. Now you can use Samba to share the printer with other windows clients that you may be using in your network.
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November 22nd, 2007 — Technical
Spamming is a serious issue. It leads to quite a lot of resource wastage like loss of bandwidth, loss of time - deleting spam…Unfortunately there is no foolproof method of stopping spammers. The motive behind spamming can be diverse - Like spreading virus, getting mail addresses, some mails come with links on them - so that the user click’s it and increases the traffic on the website. Ultimately it is money or fame…
To reduce spam mails make sure you have a good firewall installed on your server. Your mail server should be configured not to receive mails from open relay server. Sign on to common forums like CBL & SBL which release a blacklist of ip-addresses which you can block off. A good antispam software running on your server will also help filter spam.
To make sure your network is not sending out spam mails make sure you have antivirus installed on all the clients and they are updated on a regular basis. Again the firewall is very important. Other thing’s that you can introduce is like having digital signatures, or making sure that your smtp server accepts only authenticated mails ETC.
Though there are drawback’s to all this - a real mail may get marked as spam, the percentage is very small that the risk is worth taking. There are more advanced way’s to reduce spam like installing a firewall device, or having a key-exchange etc. This might not be practical for smaller organizations which don’t even have a public IP address.
Here is a link on how to reduce spam comments in your blog:
http://www.derick.in/15/how-to-kill-spam-comments/
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October 17th, 2007 — Ideas, Technical
Amazon recently announced a competition for developers using their web services. Developers can submit various business ideas that use amazon services and after the best entry will get a prize of 100,000 $
My idea is to use Amazon Ec2 services to create a load testing application for websites and other web services. A cluster image will be created, which is capable of bombarding the application under load test with a lot of service requests. To increase the load many images can be loaded into the cluster with the same loading application.
The different images can log various kinds of parameters like, round trip delay etc at various load situations and plot graphs to see how the application under test scales.
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September 3rd, 2007 — Technical
Microsoft and windows are conquering new avenues all the time. What ever they may say against windows and microsoft I am a big fan of both windows and microsoft. Without bill gates the computing scene would have been very very different. If my mom is using a computer that just because windows made it so simple and popular.
Now microsoft has its eyes on the mobile domain. Simple mathematics justifies it. There are more mobile phones in this world than personal computers. And they are slowly conquering that market also.
The latest buzz is the launch of windows live apps on nokia mobiles. The Application suite includes Live Hotmail, Live Messenger, Live contacts and Live spaces. The applications are free to download also.
I believe this is just the beginning. Nokia also might switch to windows OS in the future. Many mobile manufacturers are now using windows for their phones. The only competition windows is facing is from linux.
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August 24th, 2007 — GSM/CDMA
According to Global System for Mobile Communication (GSM Standard), the size of each SMS is limited to 160-characters in order to avoid overloading in the standard forward-and-response operation of the SMS server. Larger content of SMS can be sent but they will be segmented over multiple messages, which lead to extra charges among the mobile phone users.
Therefore Euzer Technologies Sdn Bhd has invented a novel and powerful SMS compression formula which we have filed patent at Intellectual Property Corporation of Malaysia (MyIPO) at 15th June 2007. With the 50% compression ratio that can be achieved by ZMS, mobile consumers can send up to 280 characters in a single SMS.
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