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The below wireless news is from a number of sources including: Hack a Day and The Register.

Serval = Free Mobile / Cell Phone calls, for the World!
Thursday, 08 September 2011 08:53

Communicate anywhere, any time … without infrastructure, without mobile towers, without satellites, without wifi hotspots, and without carriers. Use existing off-the-shelf mobile cell phone handsets. Use your existing mobile phone number wherever you go, and never pay roaming charges again.

Shine on, you crazy Eind minds: Boffins fire out 43Gbps infrared 'Wi-Fi'
Saturday, 18 March 2017 19:04

In five years or so, Wi-Fi access points could carry data at rates 100 times faster than today using infrared light rather than other portions of the electromagnetic spectrum.

Researchers at Eindhoven University of Technology (TU/e) in the Netherlands have developed a way to use fiber optic cables, mounted with networking hardware in a room, to shine data directly to devices using harmless infrared light.

The researchers managed to achieve speeds of 42.8 Gbit/s over a distance of 2.5 metres (8.2 feet) with this technique. That's about 2,000 times faster than average Wi-Fi speeds in the Netherlands (~17.6 Mbit/s) and

A router with a fear of heights? Yup. It's a thing
Monday, 20 March 2017 11:02
Cisco ASR 920 with mountains

Don't take the ASR 920 Series Aggregation Services Routers skiing and no-one gets hurt

Cisco's let users of its ASR 920 Series Aggregation Services Routers know they've got a fear of heights.

In one of the odder field notices The Register can recall, Switchzilla has revealed that “AC Power Supplies (A920-PWR400-A) shipped between September 2015 and May 2016 are only compliant for usage in elevations up to 2000 meters.”

Cisco says the ASR 920 is aimed at triple-play services and is “... optimized for remote access and smaller aggregation sites where a full-featured, small-footprint, converged platform is needed.”

And that's

Ask Hackaday: Frequency Hopping on the nRF24l01+?
Wednesday, 22 March 2017 05:01

We’ve seen a lot of hacks with the nRF24l01+ 2.4 GHz radio modules. The tiny chips pack a lot of bang for the buck. Since the radios can switch frequencies relatively quickly, [Shubham Paul] decided to take advantage of this feature to make a rudimentary frequency-hopping communications channel.

The code is actually incredibly simple. Both the transmitter and receiver simply scan up and down over the defined channels. Because the clock speeds of any given pair of Arduinos are likely to be slightly different, it’s not a surprise that the radios eventually drift out of sync. Right now, as a …read more

Cisco wireless, cloud management on this week's must-patch list
Thursday, 16 March 2017 15:02

If you've implemented Mobility Express on a Cisco 1800 access point, it needs patching against a critical authentication bypass.

Reported by Bijay Limbu Senihang of Rigo Information Technology, it's in the Web-based GUI: an attacker can send a crafted HTTP request to bypass authentication, and “perform unauthorised configuration changes or issue control commands”.

All Cisco Mobility Express 1800 systems on software prior to version are vulnerable.

Two of Switchzilla's cloud admin systems are vulnerable to an unauthorised file retrieval bug: its Workload Automation Client Manager Server ( and later); and the Tidal Enterprise Scheduler (TES) Client Manager Server (

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