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Aviso de confidencialidad y seguridad
About Privacy and Security
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This World Wide Web (WWW) site is provided as a public service by
the Environmental Protection Agency.
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Information presented on this WWW site is considered public information
and may be distributed or copied. The U.S. Government retains a nonexclusive,
royalty-free license to publish or reproduce these documents, or allow
others to do so, for U.S. Government purposes. These documents may
be freely distributed and used for non-commercial, scientific and
educational purposes. Commercial use of the documents available from
this server may be protected under the U.S. and Foreign Copyright
Laws. Individual documents on this server may have different copyright
conditions, and that will be noted in those documents.
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When you come to this web site to browse, you do so anonymously.
EPA does not collect identifying information about you. We collect
only summary information [see below] about
the numbers of individuals who visit our web site and what those individuals
look at. This government computer system uses industry-standard software
to create summary statistics, which are used for such things as assessing
what information is of most and least interest, determining technical
design specifications, and identifying system performance or problem
areas.
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Where identifying information is asked of you (to respond to an
information request, etc.) that information is used only for responding
to your comment or question and is not made available for other purposes.
See our comments notice
of use.
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For site security purposes and to ensure that this service remains
available to all users, this government computer system employs industry-standard
methods to monitor network traffic to identify unauthorized attempts
to upload or change information, or otherwise cause damage.
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No other attempts are made to identify individual users or their
usage habits. Raw data logs are used for no other purposes and are
scheduled for regular destruction in accordance with National Archives
and Records Administration guidelines.
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Unauthorized attempts to upload information or change information
on this service are strictly prohibited and may be punishable under
the Computer Fraud and Abuse Act of 1986.
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If you have any questions or comments about the information presented
here, please forward them to us through the address on our Comments
Page.
Below is an example of the information collected based on a standard
request for a World Wide Web document:
xxx.yyy.com - - [28/Jan/1997:00:00:01 -0500]
"GET /sitename/news/nr012797.html HTTP/1.0" 200 16704
Mozilla 3.0/www.websitename.com
- xxx.yyy.com (or 123.123.23.12)
- Host name (or IP address) associated with the requester (you as the
visitor). In this case, (....com) the requester is coming from a commercial
address. Depending on the requestor's method of network connection,
the host name (or IP address) may or may not identify a specific computer.
Connections via many Internet Service Providers assign different IP
addresses for each session, so the host name identifies only the ISP.
The host name (or IP address) will identify a specific computer if that
computer has a fixed IP address.
- [28/Jan/1997:00:00:01 -0500]
- Date and time of the request.
- "GET /sitename/news/nr012797.html HTTP/1.0"
- Location of the requested file.
- 200
- Status code - 200 is OK - the request was filled.
- 16704
- Size of the requested file in bytes.
- Mozilla 3.0
- Identifies the type of browser software used to access the page, which
indicates what design parameters to use in constructing the pages.
- www.websitename.com
- Last site the person visited, which indicates how people find this
site.
Requests for other types of documents use similar information. No other
user-identifying information is collected.
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