Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror

Comment: It's bullshit (Score 2) 190

It's not even possible in theory. There are several reasons for that.

1. The routing of data is hardcoded into the switches and cannot be changed without physically accessing the switch. The routing table not only determines which devices may talk to which devices, but also the direction of the data flow. This means that a monitor device cannot talk to an engine because the monitor is configured only to receive data.

2. But even if they managed to get the monitor device to send data, the switch would recognize this as a device malfunction (because it's not allowed to send) and disable the port it's sending on. This is not due to security against hacking but more due to "a malfunctioning device should not be able to DOS the plane's network".

3. There are actually two networks, sending identical data for redundancy. Now guess what happens if one of the networks sends different data than the other? Right: The offending port / device gets shut down.

4. The network protocol is a modified UDP protocol (no need for TCP) which makes the network deterministic - data delivery is guaranteed within a certain timeframe. Which means, again, that you need specialized hardware to even talk to the network.

5. And even if you managed to take down both switches, there'd still be a manual override in the cockpit which allowed the pilot to steer the plane without the network.

In essence, you need pretty hefty physical access to modify the planes flight mechanics. Something you will not achieve while the plane is in the air and even very unlikely while the plane is on the ground.

Comment: Re:Riiiight. (Score 1) 246

Um, the development of the frontal lobe and its importance for the development of human cognitive processes has been pretty well researched.

But I'm done with your particular brand of trollish behaviour - if you have nothing to contribute but mindless insults then your opinion is most likely worthless.

Comment: Riiiight. (Score 1) 246

Actually, you will do stupid things until about age 25. Because that's when your frontal lobe has fully matured.

This lobe is the one thing which determines stuff like "long-term consequences" and "risk calculation". It also explains why teenagers and people in their early twenties regularly pull stupid stunts - they are literally incapable of fully understanding the consequences of their actions.

Now, this doesn't mean that we shouldn't punish them. But we usually don't punish mentally handicapped people as harshly as fully capable persons...

... oh, wait, this is the USA. Scratch the last part.

Comment: Re:IPv6 and Rust: overhyped and unwanted! (Score 1) 390

by Rhywden (#49517667) Attached to: Why the Journey To IPv6 Is Still the Road Less Traveled

Yeah, the problem is though that some people then reach for NAT as the sole solution. That's the reason why my school's network is a triple NAT - 172.16/12 to 192.168/16 to 10/8.

For my computer science course I recently askd for putting a server in our school's network so we don't have to strain our outbound bandwidth (only 10 Mbit). I also considered asking for it to be reachable from the outside - but after seeing that setup, I promptly discarded the idea.

Comment: Re: No more bailout (Score 1) 690

by Rhywden (#49020753) Attached to: Free-As-In-Beer Electricity In Greece?

Geeze, guy, I said that they don't have to pay back the debts immediately. It's not my problem if you are unable to read.

Nowhere did I say that they don't have to pay back the debts forever. I said that they _currently_ don't have to pay them back. I also mentioned the ten years. I also posted a link. If you're that dense then I can't help you. Moron.

Comment: Re: No more bailout (Score 1) 690

by Rhywden (#49017647) Attached to: Free-As-In-Beer Electricity In Greece?

Please, before you're starting to talk you should take time to inform yourself. Yes, they do owe a lot of money to diverse governments and governmental institutions. And, no, they currently don't have to pay that money back and they don't currently have to pay interest.

Paying back money will begin in 10 years time (if ever, actually). This is also the reason why cutting their debt to the EU totally wouldn't change their current position one bit because, again, they currently don't have to pay their debts anyway!

However, don't confuse that money with what they're owing to private investors.

In short, stop talking, you're making yourself look like a fool.

Comment: Re:This pays credence to my rant about tech (Score 1) 198

by Rhywden (#48949409) Attached to: Can Students Have Too Much Tech?

Well, what do you expect me to do? Use chalk to theoretically discuss my Physics experiments on a slate?

Granted, I am doing that from time to time but I'm also a bit annoyed when my pupils still have to use pencil and paper to write down the data from experiments they're doing. That may be worthwhile the first two or three times to show them the ropes, but after that it gets old fast.

Or take chemistry classes - so, first the pupils have to draw the molecular structures on their paper and then draw it again on the whiteboard. That takes time which could be spent on actually discussing the problem.

There are countless of other examples where technology can speed up several processes quite a bit, particularly when it comes to sharing results.

...there can be no public or private virtue unless the foundation of action is the practice of truth. - George Jacob Holyoake

Working...