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Lots of favicon.ico requests from Mainland China

I check the Nginx error log file regularly. I noticed that a lot of attempted accesses to favicon.ico coming from mainland China.

They come from different IP addresses and with different User Agents.  Each of these IPs is only doing this, sometimes repeatedly.

They are just waste my server’s time and CPU.  How to stop them or reduce the effect on my VPS.

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The place to find your Scanners and CB Radios

Scanners and CB radios are important for a family to have on hand. When they lose power due to storms or when there is an emergency where they cannot use their phones, families can rely on scanners and two-way radios to keep in contact with the rest of the world and to summon contact emergency services.

These resources should be found in every home. However, some people are hesitant to buy them because of some stores’ prices. However, people save money on their radios and scanners when they shop at Bearcraft Warehouse. This store carries the latest selection in police scanners, two-way radios, CB radios, digital scanners, and handheld scanners. A person can find the best scanner or radio for his or her emergency needs and enjoy knowing that he or she paid the lowest price for their scanner. People who are radio and scanner hobbyists or like to hear the radio traffic of the military, law enforcement, weather spotters, and other emergency personnel often like to use digital scanners.

With a digital scanner, a person can pick up on the frequencies used by airports, law enforcement dispatchers, the national weather service, and other personnel. While many people listen to this traffic as part of their hobby, other people rely on the Uniden home patrol scanners at BearCatWarehouse.com to listen to this information and keep their families safe. They can save money and buy reliable and quality scanners by skipping their local retailers and shopping instead on this retailer’s website.

How to install Linux Malware Detect on CentOS 6.3

Linux Malware Detect is a malware scanner for Linux released under the GNU GPLv2 license, that is designed around the threats faced in shared hosted environments. Here is a HOWTO to show you the installation on CentOS 6.3.
1) SSH to CentOS server
2) Get the source package

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How many pixels do you need for printing digital photos

Samsung ML-1915

You take the pictures, and want to print it on your color printer or through Costco photo lab. But you don’t know the max size you can print.
Here is a handy printing guide for it.
5 MP = 2592 x 1944 pixels
High Quality: 10 x 13 inches
Acceptable Quality: 13 x 19 inches
4 MP = 2272 x 1704 pixels
High Quality: 9 x 12 inches
Acceptable Quality: 12 x 16 inches
3 MP = 2048 x 1536 pixels
High Quality: 8 x 10 inches
Acceptable Quality: 10 x 13 inches
2 MP = 1600 x 1200 pixels
High Quality: 4 x 6 inches, 5 x 7 inches
Acceptable Quality: 8 x 10 inches
The other way, you have a 4×6 picture, you want to scan it and enlarge it to 9×12.
The scanner has at least 450dpi scanning resolution.
The basic fact is the printout has about 200ppi, or 200lpi.
The formula is like this:
9/4 x 200 = 450dpi

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Canon imageCLASS MF4450

When I was looking for a scanner in Staples, I saw a 4 in 1 machine with good price.
Canon imageCLASS MF4450
canon-4in1

The scanner I like is about $70. This multifunction device is $100.
Is it a good deal?
4 in 1:

  1. Print
  2. Scan
  3. Photocopy
  4. Fax

Let me check the features first.

  • Print and Copy in black & white at up to 24 ppm
  • Quick First Print provides first print time of approximately 6 seconds
  • Efficient energy saving mode; approximately 3W of energy used
  • Advanced Print Modes include Booklet, Watermark, Toner Saver, Poster and Page Composer
  • Up to 9600 dpi (interpolated) color scanning resolution
  • 33.6 Kbps Super G3 fax
  • User-friendly 5-line LCD for easy navigation
  • 250-sheet front-loading paper cassette plus single-sheet multipurpose tray
  • Single Cartridge System for cost-efficient supplies replenishment

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