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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

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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

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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 8.2.110.0 are vulnerable.

Two of Switchzilla's cloud admin systems are vulnerable to an unauthorised file retrieval bug: its Workload Automation Client Manager Server (6.3.0.116 and later); and the Tidal Enterprise Scheduler (TES) Client Manager Server (6.2.1.435

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Configure ESP8266 Wifi with WiFiManager
Sunday, 19 March 2017 12:31

There’s no doubt that the ESP8266 has made creating little WiFi widgets pretty easy. However, a lot of projects hard code the access point details into the device. There’s a better way to do it: use the WiFiManager library. [Witnessmenow] has a good tutorial and a two-minute video (which you can see below).

Hard coding is fine if you are just tinkering around. However, if you are going to send your device away (or even take it with you somewhere) you probably don’t want to reprogram it every time you change access points. This problem is even worse if you …read more

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Do you use .home and .mail on your network? ICANN mulls .corp, .mail, .home dot-word domains
Tuesday, 14 March 2017 09:31

For five years, more than a dozen companies have been waiting to hear whether they will be able to run the generic top-level domains .corp, .home and .mail. And this month they finally got their answer: we're still thinking about it.

In a letter sent by the head of the domains division of DNS overseer ICANN to the 15 companies of the original 24 that applied for the dot-word domains, he acknowledges a letter sent to the organization's board nearly seven months ago.

That letter, signed by the companies that have paid ICANN over $4m in application fees, demanded that

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San Francisco reveals latest #Resist effort – resisting sub-gigabit internet access
Thursday, 16 March 2017 06:56

The City of San Francisco has already put in place numerous plans to resist the policies of the Trump Administration – from immigration to healthcare to labor agreements. Now it is moving on to internet access.

Supervisor Mark Farrell has set up a "blue ribbon panel" to look at how to get the City by the Bay wired up with super-fast fiber that will offer gigabit speeds at vastly reduced costs.

Farrell will co-chair the panel with Harvard Law School Professor Susan Crawford, who has become a figurehead of a movement to introduce dark fiber across the United States as

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