Well, any university that did that would open themselves up to a lawsuit for promoting piracy/ But the problem isn't the cost of external bandwith, its Kazaa (et al) saturating the internal bandwidth stopping people from actually using the network.
Pretty much the whole point of the program. And no, scenario 2 doesn't cover it. China could do a lot of damage to the US in a nuclear exchange which is reflected in international diplomacy. If China's capability was neutralised (and think how much the US spent in the cold war to beat Russia), and if this thing worked they would just build so many of them that they could overwelm a Chinese attack (or a reponse but that's getting into the whole Taiwan thing which is getting a bit offtopic).
phew, deep breath (preview always makes less sense than what you thought you wrote).
Good point. And it doesn't even have to be an analogue rip. So one person uses a magic marker to get past the damaged TOC (or writes a hack that ignores it) and pulls up the digitial copy and then uploads that... everyone gets a clean crisp copy. A CD player is digital, they can't cripple it in any useful way and still let people play it at all.
When you use VoIP you are already paying for the raw bandwidth via whatever means (eg your ISP bill). They are paying cash to the teleco's to transit traffic over their network (it's called a peering agreement). The telco's are then getting cold hard cash in exchange for their transatlantic (or whatever) fibre.
Your argument doesn't hold up. The whole concept of an internetwork is that you pay for your section of it (or pay to access a local section of it) and everyone plugs their sections together.
I don't really think that its a trade off between power and abstraction. It's more a case of expressiveness vs efficency. All languages have the same power - as long they're universal and not some subset of a universal language.
Expressiveness is slightly different though, as you move up through the levels of languages; from machine code up to imperative languages like C++ and then up to functional or logic languages like Haskell or Prolog - you lose control over telling the machine how to do something and focus more on what it should do.
Potentially this gives the compiler more scope for optimisation and leaves the programmer able to reason about more complex systems. Yes you could write something like, say a datamining or visualisation app in assembly language. But how much more effort would it be than doing the same in Haskell?
These nicer abstractions actually make it easier and quicker to write more complex code (theres a hell of a lot less of it for a start). I would think that theres still a level higher that we could go that would give a useful impact in productivity. The holy grail of language research is an abstract specification of what a program should do, from which an actual program can be generated automatically. This would allow complex systems to be verified more easily (and correctly) which are the kind of qualities that you need to move software from a scientfic (artistic?) discipline into a mature school of engineering.
Hopefully that would lead to more realiable systems but comes back to my original point about efficiency. In the longterm it may be more efficient rather than less to use these levels of abstraction as the large complexity of the types of systems that we will be designing will stop anyone from 'coding them by hand'.
Ok, disclaimer first - I haven't actually read the paper. That said, if you're right about:
What is novel and new about this paper is the suggestion that upstream routers are going to allow any tom, dick and mary to tell them what packets to throttle.
Then, lol. Do they really think this is a good idea in any way, shape or form? This opens up an even worse class of DOS attack than the one that it plugs. Effectively I can clamp off your traffic by accusing you of DOS'ing a bunch of servers out there somewhere (by forging requests from those servers).
Or even worse, again by forging requests from a server I can fire off pushbacks to a large number of edge routers and close down most of your traffic from those areas.
These tend to all follow the pattern that you are exhausting the cpu of the target rather than its network pipe. Newer network protocols already have protection for this by making it more expensive for the client initiating the connection rather than the server receiving it. SCTP has this in place already with a crypto-based cookie puzzle to prevent SYN bombs (similar approach would work for dns too). The other question is when (or rather if) newer protocols like these will eventually replace TCP with all of its inherent problems or if the inertia (but everybody knows TCP...) of the current protocols will kill them off first.
hehe, that's the reason that I did comp/sci. I think it was actually an engineering course about error correcting codes and how you use them in microprocessors that covered this stuff. It's all fun stuff
Not really;) It's quite a good question. If you are contracting your services to them specifically to test their security then your contract that you draw up should include access to their network. Presumably you will be plugging in a box with AirSnort et al and they are supplying you with the data.
As somebody else mentioned above if you're unsure about drawing this up yourself then you should pay a lawyer some money as it isn't really that much hassle and will cover you from a lot more expense if it does go nasty.
If, on the other hand you're going to be running externally eg you're going to do intrusion testing from the internet to try and break their firewall or see if their servers are vulnerable, then the legal status is a lot more hazy. In this case I think that you'd definitely want to get a professional to write up a contract. Does anybody know the detail of that?
No he is right. Resistence goes up as temperature increases which actually slows down processing as the signals become more noisy. The higher operating temperature may speed up gate transistions but it makes the devices more unreliable and the timing becomes less stable. As the chip has to be synchronised to work you need to keep the temperature low to keep it running. This is why OC'ers cool their systems and see how fast they can push the processor (nudging up the heat) until it becomes unstable and you can't run software any more without it crashing.
As the reply above said, great looking list. I'll have to dig a few of those out myself.
You might also want to browse some of the stuff at Edge which is right in the middle of this field. The authors who contribute there have a book called 'The Third Culture', sorry I can't give you an ISBN but UI can't find a copy myself. It's aimed as a bridge between areas in the arts and sciences. Some of the papers in it (which are on the site) are good non-technical discussions of AI/programming and the philosophy behind it.
... is there anybody else out there doing this? Err, no, not as far as I know. So will there be any software available to do it....
come on, join the dots, 2+2=...
Avoiding the whole point of useless Ask Slashdot questions, I'm sure there will be lots of posts that pick that apart. What you want isn't something that alot of other people would do so you'll have to roll your own (BTW the pot growing question above is quality). You need a SoftSwitch architecture that can accept the calls (which needs an SCTP stack running MU3A ontop, very fuzzy memory of this so that might be the wrong protocol). That will take care of call setup / cleardown, on top of which you need to write something similar to an IVR system. The audio comes across VoIP networks in a fairly clear format, the compression used is G729 which gives about an 8:1 compression ratio but is easy to decode. If you can't work out how to mix the raw audio streams together by yourself then give up now (and don't try anything that complex in real life eg walking and chewing gum).
Now, in the above paragraph are names, sometimes we call these keywords, if you put them into this piece of technology called a 'Search Engine' then you will seek what you find grasshopper.
I'm not sure whats worse, the people posting questions along the line of 'I really want to pick my own arse but my finger seems to get really smelly, are there any tools out there that will do this for me?' or the people who ok the submissions...
Where would you prefer to live, on Mars on on Endor (given that Endor has say no seasonal variations, a 100 hour day cycle, and a spectacular eclipse twice a year).
OK, maybe I'm being stupid here (in which case feel free to jump in and tell me;) but PV's are redirecting the energy from the sun. They may take energy to produce but then over their lifetime they generate energy - so how can it be a zero sum process? Surely if they keep producing energy then sooner or later they will have repaid their energy debt and will then produce clean energy. Doesn't that kind of invalidate your point?
Strange that in this discussion, which is about being forced to accept advertising, nobody has mentioned Slashdots policy or the thread that got bitchslapped for debating the pro's and con's of disabling the ads here...
Now, what are the odds that this post is modded offtopic?
We've got a bunch of P4's at work with Nvidia Quattro cards. I think it was the reseller being cheap but out of the 30 or so machines we got, about 10 fried their cards within a year. The screens degraded badly over a period of weeks as the fan couldn't cope with the heat off of the GPU, then they popped.
Seems like a stupid way to save, what a couple of quid on a fan. The reseller had to replace the boards for us of course...
From the comments in the interview it does read as if its a standard RGB cable. It delivers 480 (interlaced) lines to the TV and can plug (without the custom X-Box cable) into most DVD players. Err, I think thats got a name already and its not V-Port...
But isn't the authentication on a bit-by-bit basis, so that the first bit that is intercepted signals that fact and the rest of the message could be dropped.
Isn't this the same as can't be broken and it gives an indication that somebody is sniffing?
Some of the guys who do quantum research next door explained that they've demo'd routing qubits and normal bits across a fibre network. So the message header is normal bits describing where to route, and the payload is actual qubits that contain the encypted payload with all the usual guarentees, apparently it works although its a bit of a headf**k.
Slightly different quantum computation will do though, quantum crypto allows transmission of entirely secure messages, that is an unbreakable system. It isn't guarenteed by the hardness of a couple of mathematical challenges but by the actaul laws of physics themselves. Not only can a quantum crypto stream not be broken, but it can detect when somebody attempts to listen in. This has been demonstarted using both air and fibre as a transmission system (can't be arsed to google for a link but there should be plenty out there, it was textbook for our quantum computation course).
On the other hand, a quantum computer would break all the old cryptosystems quite easily (not sure about eliptic curves), however they are years away from being feasible and there are a lot of hard problems to solve first.
... If you tie funding into results the way that it is in universities at the moment (OK, the guy worked at Bell Labs) then people are forced to chase and publish results. In some more theoretical fields it may be less of a problem, where there is more room for disagreement and differing opinions. In this case though, when you are publishing experimental results, then they either work or they don't. If you have people who spend their careers chasing money then temptation to take shortcuts is going to catch up with them, maybe thats why the guy published so much; perhaps he wanted to get caught out and pushing into the most prostigious journals and flooding the system will get you noticed.
Question for the physists though, the article was a bit scant on details, what did the guy claim he could do? How was he claiming to turn materials into semi-conductors?
Slashdot Mirror
Well, any university that did that would open themselves up to a lawsuit for promoting piracy/ But the problem isn't the cost of external bandwith, its Kazaa (et al) saturating the internal bandwidth stopping people from actually using the network.
Aren't you forgetting:
Scenario 3: China.
Pretty much the whole point of the program. And no, scenario 2 doesn't cover it. China could do a lot of damage to the US in a nuclear exchange which is reflected in international diplomacy. If China's capability was neutralised (and think how much the US spent in the cold war to beat Russia), and if this thing worked they would just build so many of them that they could overwelm a Chinese attack (or a reponse but that's getting into the whole Taiwan thing which is getting a bit offtopic).
phew, deep breath (preview always makes less sense than what you thought you wrote).
Good point. And it doesn't even have to be an analogue rip. So one person uses a magic marker to get past the damaged TOC (or writes a hack that ignores it) and pulls up the digitial copy and then uploads that ... everyone gets a clean crisp copy. A CD player is digital, they can't cripple it in any useful way and still let people play it at all.
Nicely laid out argument, but wrong.
When you use VoIP you are already paying for the raw bandwidth via whatever means (eg your ISP bill). They are paying cash to the teleco's to transit traffic over their network (it's called a peering agreement). The telco's are then getting cold hard cash in exchange for their transatlantic (or whatever) fibre.
Your argument doesn't hold up. The whole concept of an internetwork is that you pay for your section of it (or pay to access a local section of it) and everyone plugs their sections together.
I don't really think that its a trade off between power and abstraction. It's more a case of expressiveness vs efficency. All languages have the same power - as long they're universal and not some subset of a universal language.
Expressiveness is slightly different though, as you move up through the levels of languages; from machine code up to imperative languages like C++ and then up to functional or logic languages like Haskell or Prolog - you lose control over telling the machine how to do something and focus more on what it should do.
Potentially this gives the compiler more scope for optimisation and leaves the programmer able to reason about more complex systems. Yes you could write something like, say a datamining or visualisation app in assembly language. But how much more effort would it be than doing the same in Haskell?
These nicer abstractions actually make it easier and quicker to write more complex code (theres a hell of a lot less of it for a start). I would think that theres still a level higher that we could go that would give a useful impact in productivity. The holy grail of language research is an abstract specification of what a program should do, from which an actual program can be generated automatically. This would allow complex systems to be verified more easily (and correctly) which are the kind of qualities that you need to move software from a scientfic (artistic?) discipline into a mature school of engineering.
Hopefully that would lead to more realiable systems but comes back to my original point about efficiency. In the longterm it may be more efficient rather than less to use these levels of abstraction as the large complexity of the types of systems that we will be designing will stop anyone from 'coding them by hand'.
Ok, disclaimer first - I haven't actually read the paper. That said, if you're right about:
What is novel and new about this paper is the suggestion that upstream routers are going to allow any tom, dick and mary to tell them what packets to throttle.
Then, lol. Do they really think this is a good idea in any way, shape or form?
This opens up an even worse class of DOS attack than the one that it plugs. Effectively I can clamp off your traffic by accusing you of DOS'ing a bunch of servers out there somewhere (by forging requests from those servers).
Or even worse, again by forging requests from a server I can fire off pushbacks to a large number of edge routers and close down most of your traffic from those areas.
Is there no authentication in there at all?
you also quench a thirst - although normally with some kind of flood ...
These tend to all follow the pattern that you are exhausting the cpu of the target rather than its network pipe. Newer network protocols already have protection for this by making it more expensive for the client initiating the connection rather than the server receiving it. SCTP has this in place already with a crypto-based cookie puzzle to prevent SYN bombs (similar approach would work for dns too). The other question is when (or rather if) newer protocols like these will eventually replace TCP with all of its inherent problems or if the inertia (but everybody knows TCP...) of the current protocols will kill them off first.
hehe, that's the reason that I did comp/sci. I think it was actually an engineering course about error correcting codes and how you use them in microprocessors that covered this stuff. It's all fun stuff
Not really ;) It's quite a good question.
If you are contracting your services to them specifically to test their security then your contract that you draw up should include access to their network. Presumably you will be plugging in a box with AirSnort et al and they are supplying you with the data.
As somebody else mentioned above if you're unsure about drawing this up yourself then you should pay a lawyer some money as it isn't really that much hassle and will cover you from a lot more expense if it does go nasty.
If, on the other hand you're going to be running externally eg you're going to do intrusion testing from the internet to try and break their firewall or see if their servers are vulnerable, then the legal status is a lot more hazy. In this case I think that you'd definitely want to get a professional to write up a contract. Does anybody know the detail of that?
No he is right. Resistence goes up as temperature increases which actually slows down processing as the signals become more noisy. The higher operating temperature may speed up gate transistions but it makes the devices more unreliable and the timing becomes less stable. As the chip has to be synchronised to work you need to keep the temperature low to keep it running. This is why OC'ers cool their systems and see how fast they can push the processor (nudging up the heat) until it becomes unstable and you can't run software any more without it crashing.
Should've got a copy of Hisoft's Devpac dude, it was clearly the ... oh my god what am I doing actually writing this drivel. Stop, Stop! St
As the reply above said, great looking list. I'll have to dig a few of those out myself.
You might also want to browse some of the stuff at Edge which is right in the middle of this field. The authors who contribute there have a book called 'The Third Culture', sorry I can't give you an ISBN but UI can't find a copy myself. It's aimed as a bridge between areas in the arts and sciences. Some of the papers in it (which are on the site) are good non-technical discussions of AI/programming and the philosophy behind it.
ok,ok. Give in, I was feeling a bitty ratty before lunch when I posted it. yes it was a bitchy rant. point made. fair 'nuff, mumble mumble
... is there anybody else out there doing this? Err, no, not as far as I know. So will there be any software available to do it ....
come on, join the dots, 2+2=...
Avoiding the whole point of useless Ask Slashdot questions, I'm sure there will be lots of posts that pick that apart. What you want isn't something that alot of other people would do so you'll have to roll your own (BTW the pot growing question above is quality). You need a SoftSwitch architecture that can accept the calls (which needs an SCTP stack running MU3A ontop, very fuzzy memory of this so that might be the wrong protocol). That will take care of call setup / cleardown, on top of which you need to write something similar to an IVR system. The audio comes across VoIP networks in a fairly clear format, the compression used is G729 which gives about an 8:1 compression ratio but is easy to decode. If you can't work out how to mix the raw audio streams together by yourself then give up now (and don't try anything that complex in real life eg walking and chewing gum).
Now, in the above paragraph are names, sometimes we call these keywords, if you put them into this piece of technology called a 'Search Engine' then you will seek what you find grasshopper.
I'm not sure whats worse, the people posting questions along the line of 'I really want to pick my own arse but my finger seems to get really smelly, are there any tools out there that will do this for me?' or the people who ok the submissions...
Where would you prefer to live, on Mars on on Endor (given that Endor has say no seasonal variations, a 100 hour day cycle, and a spectacular eclipse twice a year).
And, err, Ewoks.
OK, maybe I'm being stupid here (in which case feel free to jump in and tell me ;) but PV's are redirecting the energy from the sun. They may take energy to produce but then over their lifetime they generate energy - so how can it be a zero sum process? Surely if they keep producing energy then sooner or later they will have repaid their energy debt and will then produce clean energy. Doesn't that kind of invalidate your point?
Strange that in this discussion, which is about being forced to accept advertising, nobody has mentioned Slashdots policy or the thread that got bitchslapped for debating the pro's and con's of disabling the ads here...
Now, what are the odds that this post is modded offtopic?
We've got a bunch of P4's at work with Nvidia Quattro cards. I think it was the reseller being cheap but out of the 30 or so machines we got, about 10 fried their cards within a year. The screens degraded badly over a period of weeks as the fan couldn't cope with the heat off of the GPU, then they popped.
Seems like a stupid way to save, what a couple of quid on a fan. The reseller had to replace the boards for us of course...
From the comments in the interview it does read as if its a standard RGB cable. It delivers 480 (interlaced) lines to the TV and can plug (without the custom X-Box cable) into most DVD players. Err, I think thats got a name already and its not V-Port...
But isn't the authentication on a bit-by-bit basis, so that the first bit that is intercepted signals that fact and the rest of the message could be dropped.
Isn't this the same as can't be broken and it gives an indication that somebody is sniffing?
It will not carry over routers and absolutely cannot be used for normal internet email for instance.
Err, thats not strictly true, take a look at the top link in Google
Some of the guys who do quantum research next door explained that they've demo'd routing qubits and normal bits across a fibre network. So the message header is normal bits describing where to route, and the payload is actual qubits that contain the encypted payload with all the usual guarentees, apparently it works although its a bit of a headf**k.
No.
Slightly different quantum computation will do though, quantum crypto allows transmission of entirely secure messages, that is an unbreakable system. It isn't guarenteed by the hardness of a couple of mathematical challenges but by the actaul laws of physics themselves. Not only can a quantum crypto stream not be broken, but it can detect when somebody attempts to listen in. This has been demonstarted using both air and fibre as a transmission system (can't be arsed to google for a link but there should be plenty out there, it was textbook for our quantum computation course).
On the other hand, a quantum computer would break all the old cryptosystems quite easily (not sure about eliptic curves), however they are years away from being feasible and there are a lot of hard problems to solve first.
... If you tie funding into results the way that it is in universities at the moment (OK, the guy worked at Bell Labs) then people are forced to chase and publish results. In some more theoretical fields it may be less of a problem, where there is more room for disagreement and differing opinions. In this case though, when you are publishing experimental results, then they either work or they don't. If you have people who spend their careers chasing money then temptation to take shortcuts is going to catch up with them, maybe thats why the guy published so much; perhaps he wanted to get caught out and pushing into the most prostigious journals and flooding the system will get you noticed.
Question for the physists though, the article was a bit scant on details, what did the guy claim he could do? How was he claiming to turn materials into semi-conductors?