Photo: Off the Table Award winning mushrooms grown in 1891 Railway Tunnel in Tasmania Grown in a 1891 Railway Tunnel in Tasmania. Tunnel Hill Mushrooms Hidden under the surface at Mt Rumney on Hobart’s Eastern Shore in Tasmania is an old 1891 railway tunnel. It was opened in 1892, and closed in 1926. Since the...

Hello, I'm not sure what happened but I've always been able to tunnel to my xrdp GUI using a ssh putty session. Now when I try to connect after connecting via SSH it just shows a blank screen with an...

Most H.323 vendors did not implement encrypting the signaling connection with TLS. They only encrypt the media (RTP). But you can use the two GNU Gatekeepers to encrypt you call signaling even when your endpoints don't support this natively.

Suppose you have 2 locations and want to connect them securely over the public internet.

GnuGk can encrypt call signalling between those locations using TLS and encrypt the media (RTP) using H.235.6 (AES encryption). 

 Configuration for GNU Gatekeeper 1 (prefix 01)

[Gatekeeper::Main]

[RoutedMode]
GKRouted=1
H245Routed=1
CallSignalPort=1720
AcceptUnregisteredCalls=1
; make sure H.245 gets tunneled for TLS
H245TunnelingTranslation=1
; add AES media encryption if the endpoint doesn't encrypt itself
EnableH235HalfCallMedia=1
; only allow encrypted calls
RequireH235HalfCallMedia=1
; change the media key after 2^31 operations
EnableH235HalfCallMediaKeyUpdates=1

[Proxy]
Enable=1

[ModeSelection]
0.0.0.0/0=PROXY
; only use routed mode for local calls
192.168.0.0/18=H245ROUTED

[TLS]
EnableTLS=1
PrivateKey=/path/to/server.pem
Certificates=/path/to/server.pem
CAFile=/path/to/rootcert.pem
Passphrase=MySecret
CheckCertificateIP=1

[Gatekeeper::Auth]
FileIPAuth=required;Setup

[FileIPAuth]
; allow all calls from local network
192.168.1.0/24=allow
; only allow TLS encrypted and authenticated calls from elsewhere
any=onlyTLS

[RasSrv::PermanentEndpoints]
; the GnuGk in the other location, serving prefix 02
1.2.3.4:1300=remote-gw;02

[EP::remote-gw]
; use TLS to call remote GnuGk
UseTLS=1 

Configuration for GNU Gatekeeper 2 (prefix 02)

[Gatekeeper::Main]

[RoutedMode]
GKRouted=1
H245Routed=1
CallSignalPort=1720
AcceptUnregisteredCalls=1
; make sure H.245 gets tunneled for TLS
H245TunnelingTranslation=1
; add AES media encryption if the endpoint doesn't encrypt itself
EnableH235HalfCallMedia=1
; only allow encrypted calls
RequireH235HalfCallMedia=1
; change the media key after 2^31 operations
EnableH235HalfCallMediaKeyUpdates=1

[Proxy]
Enable=1

[ModeSelection]
0.0.0.0/0=PROXY
; only use routed mode for local calls
192.168.0.0/18=H245ROUTED

[TLS]
EnableTLS=1
PrivateKey=/path/to/server.pem
Certificates=/path/to/server.pem
CAFile=/path/to/rootcert.pem
Passphrase=MySecret
CheckCertificateIP=1

[Gatekeeper::Auth]
FileIPAuth=required;Setup

[FileIPAuth]
; allow all calls from local network
192.168.1.0/24=allow
; only allow TLS encrypted and authenticated calls from elsewhere
any=onlyTLS

[RasSrv::PermanentEndpoints]
; the GnuGk in the other location, serving prefix 01
1.2.3.5:1300=remote-gw;01

[EP::remote-gw]
; use TLS to call remote GnuGk
UseTLS=1 

Other options

You could also configure the remote GNU Gatekeeper as a neighbor, but beware that the RAS traffic between neighbors will show meta data (whois is caling who) in clear text! 

See the GnuGk manual section on TLS for more details and examples how to generate the OpenSSL certificates. 

Instead of asking "why is this happening" perhaps we should be asking "what should we be doing?"

Andrew Carter explores more subterranean features and the abandoned station master's flat

Emergency disaster management presents substantial risks and obstacles to shield tunnel building projects, particularly in the event of water leakage accidents. Contemporary water leak detection is critical for guaranteeing safety by reducing the likelihood of disasters and the severity of any resulting damages. However, it can be difficult. Deep learning models can analyse images taken inside the tunnel to look for signs of water damage. This study introduces a unique strategy that employs deep learning techniques, generative adversarial networks (GAN) with long short-term memory (LSTM) for water leakage detection i shield tunnel construction (WLD-STC) to conduct classification and prediction tasks on the massive image dataset. The results demonstrate that for identifying and analysing water leakage episodes during shield tunnel construction, the WLD-STC strategy using LSTM-based GAN networks outperformed other methods, particularly on huge data.

Detroit — Workers in construction and manufacturing may experience a “significantly higher incidence” of carpal tunnel syndrome compared with office workers, results of a recent study by researchers from the Henry Ford Health System show.

What is carpal tunnel syndrome, and where is the carpal tunnel? Mayo Clinic explains: The carpal tunnel is a narrow passageway located on the palm-side of your wrist that “protects a main nerve to your hand and the nine tendons that bend your fingers.” Carpal tunnel syndrome results from compressing this nerve, which produces “numbness, tingling and, eventually, hand weakness.”

The newly developed thermal-oil-heated tunnel oven combines the constant radiant heat typical for thermal oils with true vertical turbulence for convective heat transfer, and can also work with different baked goods carriers even without conveyor belts.

A roundup of current events in workplace safety, including Ladder Safety Month training opportunities and Elon Musk’s latest OSHA violations.

Alex's Journey: Finding Hope with Nordic Biolabs

A Louisiana appellate court upheld an award of benefits for a worker with carpal tunnel syndrome and ruled that his employer was not entitled to an offset against its liability. Case: Caldwell…

They might also be used as highly-sensitive sensors and even as integrated light sources.

A contractor accidentally drilled into the roof of NYC’s Queens-Midtown Tunnel, causing water to breach the southbound tube and leading to hours of traffic chaos during the US Open.

"I think that if the tone is set and the commitment is made to work towards this, other components can also achieve it," said Coralis Rodriguez.

The post Light at the end of the tunnel for DoD audit? first appeared on Federal News Network.

This is the last in a series of live audiovisual collaborations with Chris LeBlanc and Shawna Lee. The performance was captured at at the Lakely in the Oxbow Hotel, Eau Claire, Wisconsin (https://www.theoxbowhotel.com/lakely/) on September 30, 2023. Chris LeBlanc and … Continue reading →

ONE year since dubbing Kingsgrove the “new Alexandria”, one business has had to move out of the largely industrial suburb to make way for the new M5 tunnels.

Westminster is the second community surrounding the 6,200-acre federal property to withdraw from an intergovernmental agreement supporting construction of a tunnel and bridge into Rocky Flats National Wildlife Refuge.

after James Tate the size of shovels. They looked like silver oars in the lamplight, which made the dirt a chocolate ice cream. “This is so sweet,” you said behind me, pretending too. We rowed that way through the darkest soil, through the worms and the roots, the tiny gems in the jetsam. All night …

Read more "We Dug That Tunnel with Spoons "

The post We Dug That Tunnel with Spoons  first appeared on Timothy Green.

Sometimes, in fact, nature is stranger than fiction

According to Iranian media, the tunnel, located near Tehran's city center, will link a station on the Tehran metro to the Imam Khomeini Hospital.

New York City's underground tunnel becomes public therapy couch

Atoms tunnelling through a quantum battery could charge it and also keep it from losing energy, which could give an advantage over conventional batteries

A 15-kilometre-long mass of lava has formed underneath the Reykjanes peninsula in Iceland and could erupt at any time

In Iceland, scientists are planning to drill two boreholes to a reservoir of liquid rock. One will give us our first direct measurements of magma – the other could supercharge geothermal power

Title: Secret Tunnels Between Skull, Brain Speed Immune Cells After Stroke in Mice
Category: Health News
Created: 8/27/2018 12:00:00 AM
Last Editorial Review: 8/28/2018 12:00:00 AM

Now a micro entrepreneur, Ganeshi Meghwal recounts her struggle with child marriage and violence

Construction of tunnels to connect what will be the world’s tallest railway bridge in Jammu and Kashmir’s Reasi district has left scores of villages without water

Afcon Infrastructure plans to use ₹600 crore for repaying debt, ₹320 crore for funding long-term working capital requirements and ₹80 crore for buying construction equipment.  

In recent years, there have been numerous efforts worldwide to develop the synchrotron X-ray scanning tunneling microscopy (SX-STM) technique. Here, the inauguration of XTIP, the world's first beamline fully dedicated to SX-STM, is reported. The XTIP beamline is located at Sector 4 of the Advanced Photon Source at Argonne National Laboratory. It features an insertion device that can provide left- or right-circular as well as horizontal- and vertical-linear polarization. XTIP delivers monochromatic soft X-rays of between 400 and 1900 eV focused into an environmental enclosure that houses the endstation instrument. This article discusses the beamline system design and its performance.

National Air and Space Museum Curator John Anderson describes major flight innovations made possible by the Full Scale Tunnel, built in 1931 at the National […]

The post Giant wind tunnel sped aircraft innovation appeared first on Smithsonian Insider.

Recent research in Italy has suggested that soil quality deteriorates over time when intensively farmed under plastic tunnels. The tunnels are an obstacle to natural rainfall and artificial irrigation increases soil salinity and, as a consequence, agricultural yields can be significantly reduced.

The construction industry is among the top three drivers of resource use in the EU. This study investigated the environmental impacts of a common construction method, drill and blast tunnelling, using life cycle assessment. The researchers assessed 20 years of data on tunnelling in Norway to identify areas that could be targeted to reduce its environmental impact. They recommend reduced consumption of explosives and increased use of renewable energy.

Drainage tunnels running under roads can provide small animals with safe road crossings, mitigating habitat fragmentation, a new study has confirmed. The researchers suggest that the tunnel design can be further improved to aid animal movements, for example, by providing dry ledges to ensure the routes are still available in times of high rainfall.

When vandals took over an abandoned cow tunnel in Portslade in Brighton, the community took it back.

Building one of these leafy retreats adds both beauty and interest to any garden.

Officials in New South Wales are confident that transforming the ghost tunnels could have 'global potential.'

Elon Musk previews his Boring tunnel, an underground transportation tube for electric vehicles that gets drivers off the busy streets of L.A.

ennomotive, the leading open innovation platform for engineering challenges, just launched a competition for the effective pre-installation of a metallic mesh inside small mine tunnels.

What does returning to business look like in a post COVID-19 world? Join us on Thursday, May 14 at 10:00am CDT for a webinar discussing the state of the world after we reach the peak of the COVID-19 pandemic. You’ll learn about: Economic impact from COVID-19 Best practices for moving your business forward How to...

The post WEBINAR – The Great Viral Recession: Light at the End of the Tunnel? appeared first on Anders CPA.

A method of forming a magnetic tunnel junction (MTJ) device includes forming a first MTJ cap layer on a MTJ structure. The first MTJ cap layer includes a first non-nitrified metal. The method also includes forming a second MTJ cap layer over the first MTJ cap layer. The second MTJ cap layer includes a second non-nitrified metal. The method further includes forming a top electrode layer over the second MTJ cap layer. The second MTJ cap layer is conductive and configured to reduce or prevent oxidation.

A magnetic tunneling junction device and fabrication method is disclosed. In a particular embodiment, a non-transitory computer-readable medium includes processor executable instructions. The instructions, when executed by a processor, cause the processor to initiate deposition of a capping material on a free layer of a magnetic tunneling junction structure to form a capping layer. The instructions, when executed by the processor, cause the processor to initiate oxidization of a first layer of the capping material to form a first oxidized layer of oxidized material.

An apparatus for anchoring at least two graft ligaments within a longitudinal bone tunnel includes a longitudinal sleeve having at least two ligament-contacting surfaces located in lateral opposition to a sleeve inner lumen. The sleeve is configured for at least partial insertion into the bone tunnel with each graft ligament positioned laterally adjacent a different ligament-contacting surface and at least partially located between the bone tunnel and the sleeve. An actuating member has proximal and distal actuating member ends. An asymmetrically offset profile is defined by the sleeve and/or the actuating member. The asymmetrically offset profile has engagement thresholds. The actuating member is inserted into the sleeve to cause frictional engagement of each graft ligament with both the bone tunnel and at least one ligament-contacting surface, the frictional engagement of each graft ligament being temporally spaced apart from the frictional engagement of at least one other graft ligament.