UK laws mandate that you must be capable of supplying keys for any of your encrypted communications so that police can retroactively decrypt anything encrypted by you. Got a link for that? I don't think that's true. If asked for the keys you have to prove you don't have them which means getting an expert to say that your communications software dosn't store the session keys.
The way that Google offered its shares, through a Dutch auction, guarantees that the price will go down. No it does not. You are forgetting about all the people outside the USA who were unable to participate in the auction, the many people who did not meet their brokers eligability requirements and the people who failed to get a bidder id.
I'm not saying it won't go down, there are plenty of other reasons for it to fall.
f they wanted to help the small investor they would not make you buy a minimum of 500 shares at 100+ a pop through their auction method. They are not making anyone buy at a paticular price. If the bulk of the bids in the auction are at $50 then the opening price will be $50. Google's announcement is quite clear that investors can bid above or below their suggested price range.
GNUnet is written in C. One buffer overflow exploit could compromise the whole network. It needs expert review beofre the claim of being secure has any meaning.
and everybody's running their air conditioners constantly. Which causes a voltage drop along the wires. Obviously you should either be using thicker wires or a higher voltage. I can't believe it's the generator being overloaded.
all power lines are high voltage in both countries until it comes to the last, say, hundred feet. More like half a mile in a 240volt system. That's what the transformer on every block is for Th UK electrical system has fewer step down transformers than the US.
Why not turn off the grocery store freezer for 20 minutes during the peak electrical demand period of the day? Complex control systems cost money. Communications links to another system that announnces when there is high demand cost money. More electronics is more things to go wrong. Switching off a freezer for twenty minutes does not save any money. It gets warmer while it's off. When it is turned back on the therostat starts the compressor and it uses just a much electricity in one go as it would have to run ocasionally during the twenty minutes.
or why not let the ambient temperature in the building go up about 3-5 degrees F during peak electrical demand hours Why not just turn the thermostat up a few degrees and save money by not having a complex control system?
"store" the energy as a cooler than normal building Increasing the temperature difference between inside and outside increase the flow of heat energy through the insulation. Air con brings in fresh air from outside. I'm not an HVAC engineer but I doubt it would be worth it.
Large buildings in the UK often have addressable lighting fixtures. I suspect they get put in as standard when a large building gets rewired these days. The main use is to automatically turn off all the lights in the evening. There is usually an untidy pile of desktop computers in the security room or the maintanence guys office thats runs it.
I'v seen a poor electrician wandering around a big building for months. The labourers who installed the fittings took all the caps off the fixtures and threw them in a big pile. The serial numbers were on the caps. The electrician would fiddle with the computer, wander off for a couple of hours and return with the news that fitting 4732 was in a cuboard somewhere.
I can't see any reason for buildings to talk to each other. Brownouts are unheard of here in the UK, you get the full voltage or very ocasionally nothing. I suspect it is due to the use of 240volts, less current is needed for the same power so less voltage drop due to the resistance of the wires.
Lighting control is in the hands of electricians. Good luck getting them to use XML and configure things so buildings interact with each other.
Looking at the Consume node database, it looks like coverage is hugely less than 5 miles from each node. Most of the nodes in the consume database are not linked to each other. There are only a handfull of mesh network in operation. The consume net people have started using a VPN over the internet to link nodes which of course is somewhat limited in bandwidth.
Or more specifically, how far is eight hops?
That up to whoever builds the network. It depends if you want blanket coverage or not. Mesh networking could be used to cover a group of nearby building where it is hard to get cables between the buildings.
You need the antennas high above obstructions to do long distance links due to the fresnel effect. A five mile link needs antennas 40 feet above the rooftops of the buildings in the way. You might be able to make a 40 mile long chain of mesh routers but you don't get five mile radius coverage arond each router. Another radio with an omnidirectional antenna will provide coverage for peers within a couple of hundred meters of the router. A node in the link path four miles from each router needs a high gain antenna on a rooftop.
I saw one of these last November at an event in London attended by a lot of the consume.net people. The photo does not do justice to how small it is, about 3" by 3" by 1". It can be powered up the cat 5 so it would be relativly easy to mount one on a roof.
The software is based on debian. Christian Car told me that "egiht hops and there is no bandwidth left" which means my dreams of city wide mesh networks are going to need somthing resembling network planning. The biggest obstacle I can see at the moment is that there are literally tens of thousands of access points in London. Access points transmit several bursts a second even when they are not transfering any data. It is possible to do five mile links between convinient points but even with high gain antennas the peers will still hear lots of access points announcing away plus all the other stuff in the 2.4GHz band.
The company is half a dozen geeks. They have great technology but don't seem to grasp the importance of documenting it and having a good website with lots of info on what it does and how to use it. I mailed them eight months ago say "everyone thought it looked really cool in the transparent case, at least put a picture on your website!". The biggest barrier to mesh network seems to be a people problem rarther than a technologial one. Getting a mesh net running requires alpha geek level network and computer knowledge. We have enough alpha geeks. We need more people who can recruit people and get access to sites for nodes and organise the geeks.
The rules vary between country. Encryption and commercial use is generally not allowed. Discussing politics or religion is frowned upon. BBS operators enforce the rules or risk their licenses.
Before the internet largly killed off packet radio in the UK it was mostly 1200baud with a throughput on a shared half duplex bbs channel of about 20 bytes per second. Some people had faster point to point links which didn't make much difference to the overall experiance due to the slow links between bbs's.
Discussions and file transfers took place in a store and forward manner similar to newsgroups and fidonet. It took a few weeks for a message to get from Europe to Australia. People generally left their computers on for a few hours to download a days messages and read offline.
A small number of people played with TCP/IP but I don't think they ever routed traffic over more than small regions.
Re:Wifi Detection
on
War Kayaking
·
· Score: 2, Informative
I'v got one of those Wifi detectors. The detection range is significantly smaller than with a laptop. It's a nice toy and I'v found it usfull to be able to see if a wifi card is transmitting some power when fiddling with drivers. It picks up microwave ovens, 2.4GHz cameras and bluetooth as well as wifi though I can tell them apart by the way the lights flash.
They shoudl be trying to reduce the number of options in the BIOS. I like to imagine that Intel took the chance to throw away some legacy stuff when they designed the Itanium platform. Does it still has a sector translation mode setting? I'd like to be rid of it. I'v had to reinstall windows due to getting that one wrong. It's a leftover from the shortsighted harddrive size limits of old.
You don't need to install realplayer if you use windows. Media player classic with real alternative works with this site, I just tried it.
Sites hosting real alternative seem to come and go. This link looks legit though I havn't tried it. I'm really cautious about exe's from the web these days.
Quicktime alternative is also worth getting. On one computer I had to experiment with the directx settings to get it to play video properly.
hat email was a brief enquirey about a job he had in mind... that 2 years later was The Next Big Thing. Your justification just cost you millions.
The chance of me missing a valubale email because my inbox is contains thousands of direct-to-mx viruses and spam is much bigger than the chance of me missing a valuable email because someone is running their own mail server and has yet to realise that perhaps half the hosting companys, webmail services and ISP's on the plant will dump their mail.
small businesses [...] dynamic residential netblocks. They should be sending outgoing email via their ISP's smtp servers Why? The Internet is built on peer to peer networking.
Because there is often no way to contact the administrator of the email server when problem occour. You can't rely on the from address on an email. Reverse dns and the whois entry is for the ISP and the mail server may not be listening for incoming mail, postmaster@ipaddress rarely works, postmast@domin will probably be ignored.
> Seems like a good idea at first look, but it's not. It's a very good idea.
I estimate that the ratio of desireable email to spam+virus email being sent direct to mail exchangers from cable and DSL connections is on the order of 1 in 10000. That justifies dropping it all in the bit bucket.
The internet relies on cooperation. End users are not cooperating by keeping their machines secure and not under the control of spammers. Cable and DSL ISP's are not cooperating by stopping the flood of spam from their networks, for example comcast needs to have all their outgoing email blackholed until they get their house in order.
>Here's why: lots of small businesses run their systems on static >IPs which ISPs allocate within their dynamic residential netblocks.
They should be sending their outgoing email via their ISP's smtp servers, not direct-to-mx. If their ISP's servers perform poorly they should be complaining to their ISP or taking their buisness elsewhere.
Yes, the majority of inexpert computer owners I'v run into for the last few months have been wondering why their machines are running slow, showing lots of pop-ups and dialing premium rate or international numbers on their own. Small companys as well as home users.
I'v given up trying to educate people. They won't switch from IE and outlook. I don't want to get into a discussion about who used the family computer to look at a porn site. They lack the basic understanding of what the computer is doing required to make a decision when personal firewall software asks if a connection should be allowed.
Re:Its like.... magic hardware.
on
Open Source Hotspots
·
· Score: 2, Informative
My understanding is that an access point tells associated devices to transmit one at a time, in an ad-hoc network devices can transmitt over each other.
As far as I'm aware, you can only do host mode with a linux box using hostAP and a prism card. Is there support for any other cards?
I can run a DHCP server on the router to automate the network layer, but there is no way to set the PCI card in the router so that the laptop automagically picks up the channel and establishes a link.
I have the opposite problem, my linux router box in ad-hoc mode somtimes jumps to whatever channel my windows laptop has descided to use, paticularly if the laptop is turned on first. I want it to stay on a fixed channel. The windows laptop has no option to set a channel in ad-hoc mode (orinoco card) and finds the router on any channel.
percentage of google being sold
on
Google IPO Swami
·
· Score: 1
Have google said what percentage of the company is being sold in this IPO? I can't see that information in their Form S1 filing but I may be overlooking it.
The filing says that the maximum aggregate offering is 2.7 billion dollars which presumably caps the launch price, though we don't know what it is capped to until the number of shares being sold is announced.
>after i run ad-aware and mcaffee to clean them off, one of them >deleted some important files under my system folder, or at >least thats what i assume because my tcp/ip wouldnt start.
There is at least one adware program that replaces one of the windows internet-related DLL's with it's own version. Adaware didn't handle removing it very well when I came across it months ago, I was hoping they had fixed that. It usually isn't necessasary to reinstall the machine. Removing TCP/IP from the list of installed network protocols, rebooting and reinstalling it (windows CD or setup files required) usually works.
I have two Windows 2000 machines that I run with absolutely no firewall. They have IPs provided by the cable modem, and they're not NAT'ed. I keep them updated, and in their several years of continuous operation, I have not been infected with anything, nor has my machine been remotely crashed/compromised. Do you see incoming traffic on the windows networking ports? If you don't see dozens of connection attempts a day your ISP is blocking those ports, it's quite common.
My campus still blocks any incoming connections to my computer, so sharing to other colleges is a moot point. I don't know about the i2hub software but all the popular filesharing programs such as kazaa and emule can still upload even if incoming connections to the machine are blocked, they just can't uplaod to other firewalled/NATed clients.
What good is building an audio delay if your sound goes through other components (ie. Big amp)? Wouldn't the sound then still be off?
A big amp is an analog device, the delay from input to output is small. Even switch-mode amps which act like a computer power supply that produces audio instead of DC have an analog control loop.
You generally only get problematic delays when processing is being done in the digital domain. Cheap graphic equilizers are full of resistors and capacitors, a digital one could potentially contribute to a delay problem.
Slashdot Mirror
UK laws mandate that you must be capable of supplying keys for any of your encrypted communications so that police can retroactively decrypt anything encrypted by you.
Got a link for that? I don't think that's true. If asked for the keys you have to prove you don't have them which means getting an expert to say that your communications software dosn't store the session keys.
The book "How to lie with statistics" by Darrell Huff was published fifty years ago and just as true today.
The way that Google offered its shares, through a Dutch auction, guarantees that the price will go down.
No it does not. You are forgetting about all the people outside the USA who were unable to participate in the auction, the many people who did not meet their brokers eligability requirements and the people who failed to get a bidder id.
I'm not saying it won't go down, there are plenty of other reasons for it to fall.
f they wanted to help the small investor they would not make you buy a minimum of 500 shares at 100+ a pop through their auction method.
They are not making anyone buy at a paticular price. If the bulk of the bids in the auction are at $50 then the opening price will be $50.
Google's announcement is quite clear that investors can bid above or below their suggested price range.
GNUnet is written in C. One buffer overflow exploit could compromise the whole network. It needs expert review beofre the claim of being secure has any meaning.
One of the basic rules of cryptography is that you NEVER encrypt the same thing with different keys.
No it isn't. You are half remembering the rule for one time pads (not any time of encryption) that you should never use the a one time pad twice.
and everybody's running their air conditioners constantly.
Which causes a voltage drop along the wires. Obviously you should either be using thicker wires or a higher voltage. I can't believe it's the generator being overloaded.
all power lines are high voltage in both countries until it comes to the last, say, hundred feet.
More like half a mile in a 240volt system.
That's what the transformer on every block is for
Th UK electrical system has fewer step down transformers than the US.
Why not turn off the grocery store freezer for 20 minutes during the peak electrical demand period of the day?
Complex control systems cost money. Communications links to another system that announnces when there is high demand cost money. More electronics is more things to go wrong.
Switching off a freezer for twenty minutes does not save any money. It gets warmer while it's off. When it is turned back on the therostat starts the compressor and it uses just a much electricity in one go as it would have to run ocasionally during the twenty minutes.
or why not let the ambient temperature in the building go up about 3-5 degrees F during peak electrical demand hours
Why not just turn the thermostat up a few degrees and save money by not having a complex control system?
"store" the energy as a cooler than normal building
Increasing the temperature difference between inside and outside increase the flow of heat energy through the insulation. Air con brings in fresh air from outside. I'm not an HVAC engineer but I doubt it would be worth it.
Large buildings in the UK often have addressable lighting fixtures. I suspect they get put in as standard when a large building gets rewired these days. The main use is to automatically turn off all the lights in the evening.
There is usually an untidy pile of desktop computers in the security room or the maintanence guys office thats runs it.
I'v seen a poor electrician wandering around a big building for months. The labourers who installed the fittings took all the caps off the fixtures and threw them in a big pile. The serial numbers were on the caps. The electrician would fiddle with the computer,
wander off for a couple of hours and return with the news that fitting 4732 was in a cuboard somewhere.
I can't see any reason for buildings to talk to each other. Brownouts are unheard of here in the UK, you get the full voltage or very ocasionally nothing. I suspect it is due to the use of 240volts, less current is needed for the same power so less voltage drop due to the resistance of the wires.
Lighting control is in the hands of electricians. Good luck getting them to use XML and configure things so buildings interact with each other.
Looking at the Consume node database, it looks like coverage is hugely less than 5 miles from each node.
Most of the nodes in the consume database are not linked to each other. There are only a handfull of mesh network in operation.
The consume net people have started using a VPN over the internet to link nodes which of course is somewhat limited in bandwidth.
Or more specifically, how far is eight hops?
That up to whoever builds the network. It depends if you want blanket coverage or not. Mesh networking could be used to cover a group of nearby building where it is hard to get cables between the buildings.
You need the antennas high above obstructions to do long distance links due to the fresnel effect. A five mile link needs antennas 40 feet above the rooftops of the buildings in the way. You might be able to make a 40 mile long chain of mesh routers but you don't get five mile radius coverage arond each router. Another radio with an omnidirectional antenna will provide coverage for peers within a couple of hundred meters of the router. A node in the link path four miles from each router needs a high gain antenna on a rooftop.
I saw one of these last November at an event in London attended by a lot of the consume.net people. The photo does not do justice to how small it is, about 3" by 3" by 1". It can be powered up the cat 5 so it would be relativly easy to mount one on a roof.
The software is based on debian. Christian Car told me that "egiht hops and there is no bandwidth left" which means my dreams of city wide mesh networks are going to need somthing resembling network planning. The biggest obstacle I can see at the moment is that there are literally tens of thousands of access points in London. Access points transmit several bursts a second even when they are not transfering any data. It is possible to do five mile links between convinient points but even with high gain antennas the peers will still hear lots of access points announcing away plus all the other stuff in the 2.4GHz band.
The company is half a dozen geeks. They have great technology but don't seem to grasp the importance of documenting it and having a good website with lots of info on what it does and how to use it. I mailed them eight months ago say "everyone thought it looked really cool in the transparent case, at least put a picture on your website!". The biggest barrier to mesh network seems to be a people problem rarther than a technologial one. Getting a mesh net running requires alpha geek level network and computer knowledge. We have enough alpha geeks. We need more people who can recruit people and get access to sites for nodes and organise the geeks.
The rules vary between country. Encryption and commercial use is generally not allowed. Discussing politics or religion is frowned upon.
BBS operators enforce the rules or risk their licenses.
Before the internet largly killed off packet radio in the UK it was mostly 1200baud with a throughput on a shared half duplex bbs channel of about 20 bytes per second. Some people had faster point to point links which didn't make much difference to the overall experiance due to the slow links between bbs's.
Discussions and file transfers took place in a store and forward manner similar to newsgroups and fidonet. It took a few weeks for a message to get from Europe to Australia. People generally left their computers on for a few hours to download a days messages and read offline.
A small number of people played with TCP/IP but I don't think they ever routed traffic over more than small regions.
I'v got one of those Wifi detectors. The detection range is significantly smaller than with a laptop. It's a nice toy and I'v found it usfull to be able to see if a wifi card is transmitting some power when fiddling with drivers.
It picks up microwave ovens, 2.4GHz cameras and bluetooth as well as wifi though I can tell them apart by the way the lights flash.
They shoudl be trying to reduce the number of options in the BIOS.
I like to imagine that Intel took the chance to throw away some legacy stuff when they designed the Itanium platform. Does it still has a sector translation mode setting? I'd like to be rid of it.
I'v had to reinstall windows due to getting that one wrong. It's a leftover from the shortsighted harddrive size limits of old.
You don't need to install realplayer if you use windows. Media player classic with real alternative works with this site, I just tried it.
Sites hosting real alternative seem to come and go. This link looks legit though I havn't tried it. I'm really cautious about exe's from the web these days.
Quicktime alternative is also worth getting. On one computer I had to
experiment with the directx settings to get it to play video properly.
hat email was a brief enquirey about a job he had in mind... that 2 years later was The Next Big Thing. Your justification just cost you millions.
The chance of me missing a valubale email because my inbox is contains thousands of direct-to-mx viruses and spam is much bigger than the chance of me missing a valuable email because someone is running their own mail server and has yet to realise that
perhaps half the hosting companys, webmail services and ISP's on the plant will dump their mail.
small businesses [...] dynamic residential netblocks.
They should be sending outgoing email via their ISP's smtp servers
Why? The Internet is built on peer to peer networking.
Because there is often no way to contact the administrator of the email
server when problem occour. You can't rely on the from address on an email. Reverse dns and the whois entry is for the ISP and the mail server may not be listening for incoming mail, postmaster@ipaddress rarely works, postmast@domin will probably be ignored.
> Seems like a good idea at first look, but it's not.
It's a very good idea.
I estimate that the ratio of desireable email to spam+virus email being sent direct to mail exchangers from cable and DSL connections is on the order of 1 in 10000. That justifies dropping it all in the bit bucket.
The internet relies on cooperation. End users are not cooperating by keeping their machines secure and not under the control of spammers. Cable and DSL ISP's are not cooperating by stopping the flood of spam from their networks, for example comcast needs to have all their outgoing email blackholed until they get their house in order.
>Here's why: lots of small businesses run their systems on static
>IPs which ISPs allocate within their dynamic residential netblocks.
They should be sending their outgoing email via their ISP's smtp servers, not direct-to-mx. If their ISP's servers perform poorly they should be complaining to their ISP or taking their buisness elsewhere.
Anyone else see this out there?
Yes, the majority of inexpert computer owners I'v run into for the last few months have been wondering why their machines are running slow, showing lots of pop-ups and dialing premium rate or international numbers on their own. Small companys as well as home users.
I'v given up trying to educate people. They won't switch from IE and outlook. I don't want to get into a discussion about who used the
family computer to look at a porn site. They lack the basic understanding of what the computer is doing required to make a decision when personal firewall software asks if a connection should be allowed.
My understanding is that an access point tells associated devices to transmit one at a time, in an ad-hoc network devices can transmitt over each other.
As far as I'm aware, you can only do host mode with a linux box using hostAP and a prism card. Is there support for any other cards?
I can run a DHCP server on the router to automate the network layer, but there is no way to set the PCI card in the router so that the laptop automagically picks up the channel and establishes a link.
I have the opposite problem, my linux router box in ad-hoc mode somtimes jumps to whatever channel my windows laptop has descided to use, paticularly if the laptop is turned on first. I want it to stay on a fixed channel. The windows laptop has no option to set a channel in ad-hoc mode (orinoco card) and finds the router on any channel.
Have google said what percentage of the company is being sold in this IPO? I can't see that information in their Form S1 filing but I may be overlooking it.
The filing says that the maximum aggregate offering is 2.7 billion dollars which presumably caps the launch price, though we don't know what it is capped to until the number of shares being sold is announced.
>after i run ad-aware and mcaffee to clean them off, one of them
>deleted some important files under my system folder, or at
>least thats what i assume because my tcp/ip wouldnt start.
There is at least one adware program that replaces one of the windows internet-related DLL's with it's own version. Adaware didn't handle removing it very well when I came across it months ago, I was hoping they had fixed that. It usually isn't necessasary to reinstall the machine. Removing TCP/IP from the list of installed network protocols, rebooting and reinstalling it (windows CD or setup files required) usually works.
I have two Windows 2000 machines that I run with absolutely no firewall. They have IPs provided by the cable modem, and they're not NAT'ed. I keep them updated, and in their several years of continuous operation, I have not been infected with anything, nor has my machine been remotely crashed/compromised.
Do you see incoming traffic on the windows networking ports? If you don't see dozens of connection attempts a day your ISP is blocking those ports, it's quite common.
Two of the four main targets are inacessable.
g et -vr http://saapexbank.com
The other two are holding up.
wget -vr http://www.onlinepacifictrust.com/site/assets/
w
wget for windows
My campus still blocks any incoming connections to my computer, so sharing to other colleges is a moot point.
I don't know about the i2hub software but all the popular filesharing programs such as kazaa and emule can still upload even if incoming connections to the machine are blocked, they just can't uplaod to other firewalled/NATed clients.
What good is building an audio delay if your sound goes through other components (ie. Big amp)? Wouldn't the sound then still be off?
A big amp is an analog device, the delay from input to output is small.
Even switch-mode amps which act like a computer power supply that produces
audio instead of DC have an analog control loop.
You generally only get problematic delays when processing is being done in the digital domain. Cheap graphic equilizers are full of resistors and capacitors, a digital one could potentially contribute to a delay problem.