Crime Scene Cleanup >> Crime Scene Technician Certification

In 2008, Karen Evans, administrator of the Office of Government and Information Technology at the White House's Office of Management and Budget (OMB), wrote a memo to all government chief information officers that read, Crime Scene Technician Certification in part: 

"The Government's reliance on the Internet to disseminate and provide access to information has increased significantly over the years, as have the risks associated with potential unauthorized use, compromise, Crime Scene Technician Certification and loss of the .gov domain space." 

Researcher Casey Deccio (8966) has developed a visualization tool, now known as DNSViz, to help network administrators better understand Domain Name System Security (DNSSEC) and to help them troubleshoot problems. Crime Scene Technician Certification  Consequently, the OMB soon issued a mandate to all federal information systems, including those at Sandia and others with a .gov domain name.

To deploy a new security feature, Domain Name System Security (DNSSEC). Crime Scene Technician Certification That new policy required that "the top level .gov domain will be DNSSEC-signed, and processes to enable secure delegated sub-domains will be developed." 

The mandate made perfect sense, says Sandia computer scientist Casey Deccio (8966), but there soon emerged a problem when .gov organizations actually began deploying DNSSEC. Crime Scene Technician Certification "It (DNSSEC) is hard to configure correctly and has to undergo regular maintenance,"says Casey. 

"It adds a great deal of complexity to IT systems, and if configured improperly or deployed onto servers that aren't fully compatible with it, it keeps users from accessing .gov sites. Crime Scene Technician Certification They just get error responses." When Sandia started to experience such problems due to other sites' DNSSEC misconfigurations, Casey decided to take matters into his own hands. 

Using internal funding, he began to develop a visualization tool, now known as DNSViz, Crime Scene Technician Certification to help network administrators in the federal government and global community better understand DNSSEC and to help them troubleshoot problems. 

The still-new DNSSEC security feature, in an ideal world, will allow user applications like web browsers to ensure that the IP addresses they have received from the DNS have not been "spoofed"by anyone with ill intent.  Crime Scene Technician Certification  As such, Internet-connected systems within the government can verify that the responses are authoritative and have not been altered. 

Still, the hiccups with implementing DNSSEC have been enough for Casey to develop DNSViz. Crime Scene Technician Certification The trouble with DNS When you type in a Uniform Resource Locator (URL) into a web browser on your workstation, magic seems to happen. 

Essentially, you might notice a few commands that appear at the bottom of your screen, then just sit back momentarily while the Internet gremlins do their thing and miraculously find and display the web page you're seeking. Crime Scene Technician Certification But in reality, for every URL your browser accesses — including web pages, embedded images, and other content.

Your computer has to first translate the hostname of the URL into an Internet Protocol (IP) address. Crime Scene Technician Certification The entity doing much of that work is known as a Domain Name System (DNS) server. A DNS "lookup"— whereby the server is asked for the IP address that corresponds to the hostname of the URL you've typed.

This is a prerequisite for doing almost anything on the Internet, including web browsing, emailing, or videoconferencing. Crime Scene Technician Certification The DNS functions in many ways like a telephone book, translating host names (like www.sandia.gov) into numerical addresses that your computer can subsequently identify and "dial up"to access the remote servers. 

There is a natural hierarchy within the DNS, each domain name identifying its own ancestry. Crime Scene Technician Certification For example, sandia.gov is a "child"of .gov, which is a child of the DNS root. Each parent refers clients to other servers that can give answers for their "children.

"This ancestral line is the backbone for building a chain of trust that must exist for authenticating a DNS lookup with DNSSEC. Crime Scene Technician Certification Each link in the chain vouches for the link below it. In this way the DNS might be described as a sort of referral-based system analogous to meeting someone through a mutual friend. 

A user trusts a DNS answer because he or she trusts the source it came from, trust gained first through another referral source. Crime Scene Technician Certification This process continues for each "link"in the chain up to the DNS root. DNSViz — helping the IT professional 'see' the problems.

Without DNSSEC, the "trust"of referrals and answers is superficial, and tampering by third-party attackers could go undetected, thus redirecting online communications to unwanted destinations. Crime Scene Technician Certification This represents a particularly troublesome vulnerability for .gov addresses owned by government organizations guarding national security information and other vital data. 

But DNSSEC is of little use if network administrators don't know how to configure or use it. Crime Scene Technician Certification Casey describes DNSViz as a "tool for visualizing the status of a DNS zone."It provides a visual analysis of the DNSSEC authentication chain for a domain name and its resolution path in the DNS namespace.

Made available via a web browser to any Internet user (http://dnsviz.net/). Crime Scene Technician Certification It visually highlights and describes configuration errors detected by the tool to assist administrators in identifying and fixing DNSSEC-related configuration problems. 

The primary contribution provided by DNSViz is the ability to bring together all the components that work together for DNSSEC to function properly into a single graphical representation. Crime Scene Technician Certification The resulting visualization is a collection of configuration data and relationships that are otherwise difficult to assemble, assess, and understand. 

To help network administrators in their DNSSEC deployment, Casey's DNSViz tool functions in two primary ways: it actively analyzes a domain name by performing pertinent DNS lookups, Crime Scene Technician Certification and it makes the analysis available via the web interface. 

The active analysis occurs periodically to build a history of DNSSEC deployment over time and provide a historical reference for DNS administrators. Crime Scene Technician Certification The means for making the data available to users is currently the web interface, though Casey intends to expand DNSViz functionality to allow access via other means. 

For example, alert mechanisms might be used to inform affected parties, Crime Scene Technician Certification and application programming interfaces (API) can be designed to allow administrators to programmatically access the information instead of manually browsing to the DNSViz web site. 

Currently, Casey has the tool running in the background on Sandia/Californi's servers, monitoring a list of some 100,000 DNS names. Crime Scene Technician Certification It performs an analysis a couple of times each day and offers a situational awareness of what the DNS configuration for each name looks like from top to bottom. 

He has demonstrated the challenges of DNSSEC deployment, as measured by his tool, in international DNS forums and workshops. Crime Scene Technician Certification He hopes to use these results to identify practices contributing to DNSSEC mishaps and suggest changes to improve DNSSEC deployment in practice. 

Though the functionality provided by DNSViz could potentially be included in a marketable software product that's sold by a for-profit company, Casey says he envisions it as an open-source tool available to anyone who needs it. Crime Scene Technician Certification With further funding, he hopes to expand the tool so that it can analyze DNS health and security on a continuous basis, essentially creating a full-blown monitoring system that is scalable, versatile, and more informational.

Murder Cleanup

In the United States it seems there are an estimated 15,000 murders committed every year and with these murders there is a high demand for Crime Scene Cleanup Murder Cleanup. It is good to learn that the homicide rate has actually declined substantially since the beginning of the 1990s dropping from 9.8 people out of every  read more..

How To Help A Hoarder

In some cases, the best option would be to put the property into a receivership under Health & The City would ask the court to appoint a receiver who would take over the property and would have the power to make arrangements for repairs, cleanup, or sale. The receiver would work with the Hoarding How To Help A Hoarder in  read more..

Water Bear Carpet Cleaning

The Federal Emergency Management Agency recently announced more than $1 million in recovery aid to build a new Rockefeller Wildlife Refuge Fish Lab and Fish Lab Complex, Water Extraction Water Bear Carpet Cleaning which were destroyed during Hurricane Rita.

The Rockefeller Wildlife Refuge encompasses  read more..

Hurricane Katrina Flooding

FLOODED SEPTIC SYSTEMS What should I do if my septic system was flooded or damaged? Don’t use the system if the soil around the system is wet and flooded. The waste water will not be treated and will become a source of pollution.Once floodwaters have receded, Water Damage Hurricane Katrina Flooding there are several things  read more..

About Radon Radon Myths

Radon Myths MYTH: Scientists aren't sure radon really is a problem. FACT: Although some scientists dispute the precise number of deaths due to radon, all the major health organizations (like the Centers for Disease Control and Prevention, Radon Mitigation About Radon Radon Myths the American Lung Association and the American  read more..

How To Pass A Radon Inspection

In announced tests, applicants must conduct all exposures and analyses in the same way that they are done for consumers. For example, device analyses must be done by the participating organization using equipment used in analyzing consumer measurements. Applicants must pass a test for each spec  read more..

How To Catch Birds In The Home In Arizona

The problem of starling damage to livestock feed has been documented in France and Great Britain, and in the United States. As the science of raising cattle for slaughter progressed from range to feedlot operations, the starling Animal Damage How To Catch Birds In The Home In Arizona problem intensified. 

The concent  read more..

Spot A Meth House In Your Neighborhood

 
Handling of Furnishings and Porous MaterialsAbsorbent materials can accumulate vapors that are created and dispersed during thecooking pr  read more..

Learn Water Damage Electronic Restoration

All magnetic parts processed to the Class S requirements of MIL-STD-981 are acceptable as level 1 parts. Magnetics processed to Class B requirements of MIL-STD-981 are acceptable as level 2 parts. All level 1 and 2 custom magnetics shall be processed to the Electronic Restoration Learn Water Damage Electronic Restoration applicable requirements of   read more..

EPA Clean Up Lead Contaminated Soil

For an employee removed due to a final medical determination, when a subsequent final medical determination results in a medical finding, determination, or opinion that the employee no longer has a detected medical condition which places the employee at increased risk of material impairment to healt  read more..