ISP could set up captive portal (like on WLANs) with information and pointers to AV software updates. Either all traffic is relayed through proxy or then packets are allowed to AV sites.
But false positives are the problem, of course. But once you get confirmed spam, virus or worm traffic, then you can be quite sure.
Where I live, it costs 3 euros to discard a PC, 9 euros for a CRT monitor for individuals (maximum two of each in a month; if more or you are a company then the cost is higher).
Those are sent for processing to separate metals and other material that can be recycled.
I think you are overestimating the add expenses because lots of that stuff can be integrated to laptop with a lot lower cost when it is designed. I think motion sensor (a chip) itself does not cost much and a PC has enough processing power to handle signal same way sa temperature sensors (I think in stand-alone system prosessing, battery and case are the most expensive part, not the actual sensor).
A GPS system is not a good method to locate laptops, because they are mostly used indoors - cars are much more frequently used outdoors:-). You can have a cellular phone integrated in your laptop (or on PC Card) and use it for both locating postion and sending information on location. The postition accuracy is not as good as with GPS, but it works also indoors.
In my opinion, the extra cost is only motion sensor (manufacturer could use that to void warraty if computer has got too hard hits:-( ), and software.
If these devices becomes common, then the thiefs start carrying metal cases where they drop stolen laptops and then reinstal laptop in some place that does not have cellular coverage.
Of course, because there is large number of computers (and poor anti-spam laws), the US will have large number of poorly maintained computers.
I just made some research about spams I have received this month, and according to it, the top ISP list looks like following:
AT&T WorldNet Services
SBC Internet Services - Southwest
Comcast Cable Communications, Inc.
CHINANET-BACKBONE
Cable & Wireless USA
Korea Internet Exchange
AOL Transit Data Network
(Based on AS numbers, names from whois db). One thing I noticed was that there were no significant difference in time of day when spam messages arrived, flow is steady throughout day and week.
Quite interesting, however, is the fact that I get most of virus emails from Europe (Italy and France).
If you just want to experiment MPI, just get some old Pentiums (without monitors), you may get those for free. If you find some brand-name desktop PCs, they are quite quiet compared to no-name minitowers. They will use more power than mini-ITXs, but cost is much lower.
About year ago I got 20 Pentium 133s for 400 euros with 32 MB of memory each and 10BaseT network card. They were just perfect to emulate web clients -- the key was to have identical computers so I could just mirror hard drives.
Bandwidth is not an issue, if you take into account that you transmit only changes or/and use lower refresh rate. A text-based monocrome (or 16-color) text output does not need much of bandwidth if you encode it smart.
If you need full-color, high framerate display then you should use M-JPEG or MPEG compression.
Racism may be one factor but there are other issues also. In some side note related to recent gas explosion in China it was noted that more than 90,000 people have died in work-related accidents from January to September 2003. This figure is more than 10 times larger than in western Europe where typical rate is 8 deaths to 100,000 people. Based on stories there is also quite of lot serious accedents also, and one is typicaly paid little or nothing for losing a body part.
If you need to pay lower salaries and can omit some safety, health and environment protection costs it can be economical to have people to replace robots. If people in cheap countires will ever get rights to ask for compensation, the current asbestos liabilities are just small money.
As an IT worker, there is probably no great risk of losing leg, hand or life but probably ones work conditions are worse than on places where you can complain that 95Hz CRT gives you an headache and you want TFT.
That is "roaming fee" that results from the fact that the call to you must travel over multiple networks if you happen to be aboard. Someone must pay for that: it would be difficult (and unfair) for caller to pay for it because the cost may be several per minute if you happen to be some obscure network.
Everyone should know that fact that is may be expensive to receive calls. It usually pays to check from your operator how much calls in each network cost and select network manually.
For example my operator charges receiving calls in Moscow 0.69-1.19 per minute while calls to home are 3.19-3.48. In San Francisco prices are 1.14-1.79 / 1.23-2.25. On the other hand, in Denmark the prices are same on every network.
Vulnerability of receive-only
on
Build Your Own NOC
·
· Score: 5, Informative
There are some vulnerabilities for passive monitoring also. A search of CERT database for snort or tcpdump gives you a following list:
Heap overflow in Snort "stream4" preprocessor
Buffer overflow in Snort RPC preprocessor
tcpdump enters infinite loop when parsing crafted ISAKMP packets
tcpdump vulnerable to buffer overflow via improper decoding of AFS RPC (Rx) packets
tcpdump vulnerable to buffer overflow via parsing of AFS ACL packets
tcpdump, ethereal vulnerable to DoS
A listen-only box gives you some protection but it cannot be the only protection for your traffic recorder.
The fact that they are using wireless interface is not the major problem here as you can do as secure networking over radio as with cable in terms of data integrity and authentication (that are main conserns in voting).
The problem with wireless is the easy DoS so basicly by placing small device at poll station you can disable all communication.
But, the most realiable voting method is to use paper ballots counted by hand. It may sound expensive but it is used in those corners of where people want fair elections with verifiable results.
Slashdot Mirror
ISP could set up captive portal (like on WLANs) with information and pointers to AV software updates. Either all traffic is relayed through proxy or then packets are allowed to AV sites.
But false positives are the problem, of course. But once you get confirmed spam, virus or worm traffic, then you can be quite sure.
Where I live, it costs 3 euros to discard a PC, 9 euros for a CRT monitor for individuals (maximum two of each in a month; if more or you are a company then the cost is higher).
Those are sent for processing to separate metals and other material that can be recycled.
I think you are overestimating the add expenses because lots of that stuff can be integrated to laptop with a lot lower cost when it is designed. I think motion sensor (a chip) itself does not cost much and a PC has enough processing power to handle signal same way sa temperature sensors (I think in stand-alone system prosessing, battery and case are the most expensive part, not the actual sensor).
A GPS system is not a good method to locate laptops, because they are mostly used indoors - cars are much more frequently used outdoors :-). You can have a cellular phone integrated in your laptop (or on PC Card) and use it for both locating postion and sending information on location. The postition accuracy is not as good as with GPS, but it works also indoors.
In my opinion, the extra cost is only motion sensor (manufacturer could use that to void warraty if computer has got too hard hits :-( ), and software.
If these devices becomes common, then the thiefs start carrying metal cases where they drop stolen laptops and then reinstal laptop in some place that does not have cellular coverage.
Of course, because there is large number of computers (and poor anti-spam laws), the US will have large number of poorly maintained computers.
I just made some research about spams I have received this month, and according to it, the top ISP list looks like following:
(Based on AS numbers, names from whois db). One thing I noticed was that there were no significant difference in time of day when spam messages arrived, flow is steady throughout day and week.
Quite interesting, however, is the fact that I get most of virus emails from Europe (Italy and France).
If you just want to experiment MPI, just get some old Pentiums (without monitors), you may get those for free. If you find some brand-name desktop PCs, they are quite quiet compared to no-name minitowers. They will use more power than mini-ITXs, but cost is much lower.
About year ago I got 20 Pentium 133s for 400 euros with 32 MB of memory each and 10BaseT network card. They were just perfect to emulate web clients -- the key was to have identical computers so I could just mirror hard drives.
Bandwidth is not an issue, if you take into account that you transmit only changes or/and use lower refresh rate. A text-based monocrome (or 16-color) text output does not need much of bandwidth if you encode it smart.
If you need full-color, high framerate display then you should use M-JPEG or MPEG compression.
Racism may be one factor but there are other issues also. In some side note related to recent gas explosion in China it was noted that more than 90,000 people have died in work-related accidents from January to September 2003. This figure is more than 10 times larger than in western Europe where typical rate is 8 deaths to 100,000 people. Based on stories there is also quite of lot serious accedents also, and one is typicaly paid little or nothing for losing a body part.
If you need to pay lower salaries and can omit some safety, health and environment protection costs it can be economical to have people to replace robots. If people in cheap countires will ever get rights to ask for compensation, the current asbestos liabilities are just small money.
As an IT worker, there is probably no great risk of losing leg, hand or life but probably ones work conditions are worse than on places where you can complain that 95Hz CRT gives you an headache and you want TFT.
That is "roaming fee" that results from the fact that the call to you must travel over multiple networks if you happen to be aboard. Someone must pay for that: it would be difficult (and unfair) for caller to pay for it because the cost may be several per minute if you happen to be some obscure network.
Everyone should know that fact that is may be expensive to receive calls. It usually pays to check from your operator how much calls in each network cost and select network manually.
For example my operator charges receiving calls in Moscow 0.69-1.19 per minute while calls to home are 3.19-3.48. In San Francisco prices are 1.14-1.79 / 1.23-2.25. On the other hand, in Denmark the prices are same on every network.
There are some vulnerabilities for passive monitoring also. A search of CERT database for snort or tcpdump gives you a following list:
A listen-only box gives you some protection but it cannot be the only protection for your traffic recorder.
The problem with wireless is the easy DoS so basicly by placing small device at poll station you can disable all communication.
But, the most realiable voting method is to use paper ballots counted by hand. It may sound expensive but it is used in those corners of where people want fair elections with verifiable results.