With the deployment of wireless network access in the workplace, the requirement for a more enhanced security design emerges. Wireless technology offers a more accessible means of connectivity but does not address the security concerns involved with offering this less restrained service. In order to facilitate management of this network, maintain a secure network model, and keep a high level of usability, a multi-functional device to do these tasks must be placed in the wireless environment.
To learn more please view the Wireless Firewall Gateway White Paper.
DARWIN
on the IPG
The
DARWIN Remote Aerospace
Analysis and Knowledge Management system, developed at Ames to
allow real-time access to wind tunnel test measurements from remote
locations, is being enhanced to run on, and take advantage of,
the new Information Power Grid infrastructure. The Globus metacomputing
toolkit has been installed at a DARWIN test site, and a CORBA-Java
"wrapping" for Globus services has been devised to make them available
to DARWIN’s distributed-object software architectures. In
the near future, a Grid-based DARWIN system will provide capabilities
such as management of large volumes of small, proprietary, secure
files on mass storage systems; management of large, secure, heterogeneous
databases; and high-traffic wide area network access. Work on
DARWIN is supported by the NASA IT Base program, the Intelligent
Synthesis Environment project, NASA’s Langley Research Center
and the Jet Propulsion Laboratory, and the United States Air Force.
DoD
Metacenter
Since
1998, the Portable Batch System
(PBS) batch queuing software developed at NAS has linked IBM SP2
testbed systems at the NAS Facility and NASA Langley Research
Center into a seamless "metacenter." NAS researchers have helped
the Department of Defense to use the same system to link SP2s
at the U.S. Army Corps of Engineers Waterway Engineering Station
in Vicksburg, Mississippi, and the Aeronautical Systems Center
at Wright-Patterson Air Force Base in Ohio. PBS tracks file locations
across machines, copies files to the appropriate system within
the metacenter, and returns solutions to a user-specified location.
The technology makes a larger range of computing resources available
to investigators at each site and helps to balance computational
loads across both sites.
Information
Power Grid (IPG) Testbed
The
IPG testbed links supercomputers at NASA's
Ames, Langley, and Glenn Research Centers into a single heterogeneous Grid.
The network is being used to test "middleware" such as the Globus metacomputing
toolkit, grid-enabled applications such as OVERFLOW, and improved accounting,
security, and scheduling functions. Management of the testbed is decentralized
and democratic, with each site retaining full control over the use of their
resources. The full-scale Information Power Grid that will grow from the testbed
will be part of a national Grid being built in collaboration with the National
Center for Supercomputing Applications, the National Partnership for Advanced
Computational Infrastructure, and other
institutions.
NAS
Condor Pool
Condor
is a cycle-stealing software system that distributes "extra credit"
jobs to workstations in a local-area network that have finished
their regular work. Developed at the University of Wisconsin,
Condor combats the problem of load imbalances (when some machines
are overloaded while neighboring machines are idle). More than
150 workstations have been added to the NAS Facility’s Condor
pool, putting to good use hundreds of thousands of CPU-hours per
year that would otherwise have been wasted. NAS researchers are
using the Condor pool to study computationally intensive problems
such as the use of genetic algorithms in circuit design. They
are also adding new capabilities to Condor, such as the ability
to run programs in Java.
NASA
Research and Education Network (NREN)
The
NREN project, NASA’s
part of the Federal Next Generation Internet initiative, sponsors
the prototyping and evaluation of networking applications related
to NASA missions. NREN-supported researchers are designing a high-performance
wide area network (WAN) testbed that integrates with other WANs,
testing multicasting applications over WANs, maintaining the new
Next Generation Internet Exchange-West (NGIX-W), and helping to
supply high quality of service and reservable network bandwidth
for the Information Power Grid.
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