Two great site for ITT and rookies

CanYouSeeMe.org - Open Port Check Tool

This is a free utility for remotely verifying if a port is open or closed. It is useful to users who wish to verify port forwarding and check to see if a server is running or a firewall or ISP is blocking certain ports.

http://www.canyouseeme.org/

Background

Most residential ISP's block ports to combat viruses and spam. The most commonly blocked ports are port 80 and port 25.

Port 80 is the default port for http traffic. With blocked port 80 you will need to run your web server on a non-standard port.

Port 25 is the default port for sending and receiving mail. ISPs block this port to reduce the amount of spam generated by worms on infected machines within their network.

Common Ports
FTP	21
SSH	22
Telnet	23
SMTP	25
Web	80
Pop 3	110
IMAP	143
Other Applications
Remote Desktop	3389
PC Anywhere	5631

What Is My IP?

This website is dedicated to helping users across the world not only locate their IP address, but perform an IP address lookup, learn how to trace email, and learn how to change IP address. Learning your own IP address is crucial for online gaming, tech support, using remote desktop connections, detecting proxies or even running an email server. We also host a forum for our users to learn and help others with IP related questions.

What Is An IP Address?
An IP address is an exclusive number online devices use to identify and communicate with each other through computer networks. This process can best be compared to how we receive mail to our home address. An IP address would be most similar to a mailing address, while the network would be compared to the town you live in. Just like our home addresses, information cannot be sent or received by devices without a specific address.

Internet Speed Test
An internet speed test will show you the results of the fastest upload and download burst rates during your internet speed test from your location to the location of the test server you choose. TCP/IP degrades over distance so choose the server closest to you when performing the internet speed test.

IP Address Lookup
The IP Address Lookup tool also referred to as IP Lookup, Lookup IP, Lookup IP Address, IP Address Location, IP Location, and IP Locator is designed to give you an idea of where your IP Address or the IP Address you lookup is located.

http://www.whatismyip.com/

What happens when a cemetery becomes full?

Ever since I was a young I have this question that I have never had answered for me.
Tonight I will search all over the internet to answer this new question.I will be glad if anyone that read my blog and has this answer.it will be appreciated if I can get from You guys
open my search 4/23/2014
day 1

Moon birth mystery

Futurist Technology

Look at this prototype and think what will come next

http://www.pbh2.com/science-nature/technology/technology-gifs/

8128 and Perfect Numbers

How much radiation is the average person exposed to during day-to-day life?

How much radiation is the average person exposed to during day-to-day life?

We are constantly exposed to radiation from a number of sources, including radioactive materials in our environment, radon gas in our homes, and cosmic rays from outer space. This is called background radiation and it varies across the country.

The average American is exposed to about 3 mSv (millisieverts) of radiation from natural sources over the course of a year. (A millisievert is a measure of radiation exposure.) Much of this exposure is from radon, a natural gas with levels that vary from one part of the country to another.

For example, because the earth’s atmosphere blocks some cosmic rays, living at a higher altitude increases a person’s exposure – residents in the plateaus of New Mexico and Colorado, have an annual exposure level of about 1.5 mSv more per year than people living at sea level. And a 10-hour airline flight increases cosmic ray exposure by about 0.03 mSv.

Smoking a pack of cigarettes a day exposes the smoker to an extra 53 mSv per year.

How much does an imaging test expose a person to radiation?

Often not much, but it depends on the imaging test used. A single chest x-ray exposes the patient to about 0.1 mSv, which is about the radiation dose people are exposed to naturally over the course of about 10 days. A mammogram exposes a woman to 0.4 mSv, or about the amount of exposure a person would expect to get in about 7 weeks.

Some other imaging tests have higher exposures. A lower GI series using standard x-rays exposes a person to about 8 mSv. A CT scan of the abdomen (belly) and pelvis exposes a person to about 10 mSv, this goes up to 20 mSv if the test is done with and without contrast. A CT colonography exposes you to about 10 mSv of radiation. Keep in mind that these are estimates, and studies have found that the amount of radiation you get can vary a great deal.

If you have concerns about the radiation you may get from a CT scan, or any other imaging test, check with the facility that will perform the test. (Remember that MRI and ultrasound exams do not expose you to radiation.) You may also want to keep a “medical imaging history” that will allow you to track your own medical imaging history and share it with your health care providers. (One can be found online at www.radiologyinfo.org. See the “To learn more” section.) The best advice at this time is to only get imaging tests that are needed and try to limit your exposure to all forms of radiation. If you do need to have a test that will expose you to some radiation, ask if there are ways to shield the parts of your body that aren’t being imaged from being exposed. For example, a lead apron can sometimes be used to protect parts of your chest or abdomen from getting radiation, and a lead collar (known as a thyroid shield or thyroid collar) can be used to protect your thyroid gland.

How much does the extra radiation increase a person’s cancer risk?

Researchers have estimated that radiation exposure from the average diagnostic x-ray may increase cancer risk very slightly (likely on the order of hundredths to thousandths of one percent). Of course, this can be affected by the type of test done, the area of the body exposed, and other factors.

Radiation experts say that the risk levels represented in imaging tests are only very small additions to the 1 in 5 chance we all have of dying from cancer. It’s hard to know if and if so, just how much the radiation exposure from imaging tests increases a person’s cancer risk. Most studies on radiation and cancer risk have looked at people exposed to very high doses of radiation, such as uranium miners and atomic bomb survivors. The risk from low-level radiation exposure is not easy to calculate from these studies.

We do know that children are more sensitive to radiation and should be protected from it as much as possible.

Because radiation exposure from all sources can add up over a lifetime, and radiation can, indeed, increase cancer risk, imaging tests that use radiation should only be done for a good reason. In many cases, other imaging tests such as ultrasound or MRI may be used. But if there’s a reason to believe that an x-ray or CT scan is the best way to look for cancer or other diseases, the person will most likely be helped more than the small dose of radiation can hurt.

reference:

http://www.cancer.org/treatment/understandingyourdiagnosis/examsandtestdescriptions/imagingradiologytests/imaging-radiology-tests-rad-risk

Google Secrets You Need To See