Website monitoring
Website monitoring Website monitoring is an automated process of checking availability of a site.

Website monitoring is an automated process of checking availability of a site. The main goal of it is evaluation of possibility to access the site by clients. It is clear, that a site is efficient when an interested person can load the page and make a purchase or look for some information. If this action fails for some reason - the site does not execute its mission, and a client will find what he needs somewhere else.

There are many solutions of this problems, and all of them could be divided into passive and active ways. The result of monitoring is the value of uptime, measured with some accuracy. Having it, one can conclude how long is the site broken during some period of time (usually, for a year). Low uptime usually means that the server where the site is hosted, or internet connection to it, is unreliable and is required to be changed.

  • CM.Glossary.Uptime
  • CM.Glossary.Downtime
  • CM.Glossary.ActiveMonitoring
  • CM.Glossary.PassiveMonitoring
  • CM.Glossary.Availability
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"To have a record of up-time of a Web site seems a very important concept. So what you offer seems interesting."
- Gerardo
Shellshock vulnerability online check
Considering the recently discovered Shellshock vulnerability, HostTracker has created a tool for testing it.
Check your server for vulnerability

How does it work?

It is developed for a Linux server with a web server installed on it. The algorithm is very simple. We consequently generate 4 http requests:

  • 1. Ordinary request
  • 2. The request tries, using vulneratility, post a "harmful" cookie which causes 2-seconds delay in respond to our special http request.
  • 3. The request tries, using vulneratility, post a "harmful" cookie which causes 4-seconds delay in respond to our special http request.
  • 4. Same as #3

Results of the test

How to understand the result?

We compare response time for all 4 requests. Three situation are possible:

  • 1. Vulnerability found. We may affirm that if the difference in responses is about 2 seconds for requests without cookie and with 2-second-delay cookie, as well as for requests with 2 and 4-second delay cookie. It means that our request was able to use the vulnerability and set these cookies.
  • 2. Vulnerability not found. All the requests have about the same response time. The cookies, likely, were not installed because there is no vulnerability.
  • 3. Uncertain situation. If the response time differs widely, without coincidence with preset by cookies delay, we can not say for sure. It could be if the server is under high load. To check this, we use two requests with same cookies (#3 and #4). If the response time for two same checks varies, we make a conclusion that the response time is not affected by cookies. At least, not only by them. So in this case our method can not detect vulnerability

Safety of checks

Our test can not damage your server. The risk consists of appearance of one extra-cookie, which is used only for our requests and can not affect normal work-flow of your site.

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Qom, Iran, Islamic Republic of Working
Farrokh Shahr, Iran, Islamic Republic of Working
Hyderabad, Telangana, India Working
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Tehran, Iran, Islamic Republic of Working
Freemont, United States Working
Zurich, Switzerland Working
Sofia, Bulgaria Working
Tehran, Iran, Islamic Republic of Working
Berlin, Germany Working
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Novokuznetsk, Russian Federation Working
Kochi, Kerala, India Working
Luxembourg, Luxembourg Working
Tehran, Iran, Islamic Republic of Working
Shiraz, Iran, Islamic Republic of Working
Mashhad, Iran, Islamic Republic of Working
Paris, France Working
Singapore, Singapore Working
Yekaterinburg, Russian Federation Working
Orlando, FL, United States Working
Rasht, Iran, Islamic Republic of Working
Kuala Lumpur, Malaysia Working
New York, NY, United States Working
Vilnius, Lithuania Working
Mykolaiv, Ukraine Working
Santa Ana, Costa Rica Working
Lansing, MI, United States Working
Hamedan, Iran, Islamic Republic of Working
Tabriz, Iran, Islamic Republic of Working
London, United Kingdom Working
Amsterdam, Netherlands Working
Novosibirsk, Russian Federation Working
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Tehran, Iran, Islamic Republic of Working
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Khmelnytsky, Ukraine Working
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Tehran, Iran, Islamic Republic of Working
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Dronten, Netherlands Working
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Montreal, Canada Working
Los Angeles, CA, United States Working
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Moscow, Russian Federation Working
Paris, France Working
Gravelines, France Working
Meppel, Netherlands Working
Waco, TX, United States Working
Moscow, Russian Federation Working
Almaty, Kazakhstan Working
St.Petersburg, Russian Federation Working
Clarks Summit, PA, United States Working
Tehran, Iran, Islamic Republic of Working
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Santa Fe de la Vera Cruz, Argentina Working
Melbourne, VIC, Australia Working
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Kyiv, Ukraine Working
Berlin, Germany Working
Kharkiv, Ukraine Working
Houston, TX, United States Working
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Kuala Lumpur, Malaysia Working
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Amsterdam, Netherlands Working
London, United Kingdom Working
Zurich, Switzerland Working
Istanbul, Turkey Working
Vilnius, Lithuania Working
Sofia, Bulgaria Working
Amsterdam, Netherlands Working
Moscow, Russian Federation Working
Kwun Tong, Hong Kong Working
Kochi, Kerala, India Working
Amsterdam, Netherlands Working
San Jose, CA, United States Working
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West Europe Working