  TKJunkMail Enjoy the sun Premium join:2002-03-03 Avalon, NJ
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| Giant Jap satellite must still obey law of physics
»www.telecomasia.net/telecomasia/···d=174205
Japanese government officials said they will develop a new communications satellite to provide broadband services that are as fast as fiber-optic cable.
Japan's Internal Affairs and Communications Ministry said the new satellite will make it possible to send and receive data at a maximum speed of 100 MBps in mountainous areas and remote islands, as well as aboard Shinkansen bullet trains, airplanes and ships.
The satellite will have a dish antenna measuring 66 feet in diameter. It will be four times larger in diameter and 16 times larger in surface area than a conventional satellite antenna. One thing that the news item left out of this wonderful product is that the average latency of about 800 msecs for a satellite connection( »Satellite Forum FAQ »What are the average ping times for satellite? ) makes the product a poor supplier of interactive internet browsing. It will suffer the same problems that the Direcway( »HughesNet Satellite ) system does.
That doesn't mean it doesn't have a lot of uses. It just means that when the marketing types start hyping the product they conveniently overlook its limitations. And in comparing it to fiber optic without mentioning latency issues, they are doing just that. -- My Web Page Join Red Room Forum |
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  TKJunkMail Enjoy the sun Premium join:2002-03-03 Avalon, NJ
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| Pros & cons of publishing security vulnerabilities
»www.eweek.com/article2/0,1895,1843819,00.asp
The security research company responsible for discovering a software hole later used by the Slammer worm is considering an end to its policy of publishing details of vulnerabilities to public forums.
Speaking with eWEEK at the Black Hat conference here last month, David said that arguments in favor of disclosing details of software holes have lost force in recent years. At the same time, the threats to organizations and individuals on the Internet from organized cyber-crime syndicates and international terrorists have increased.
In the wake of the Slammer worm, NGS changed its disclosure policy. NGS now notifies companies of the holes it discovers and gives them time to create a patch and 90 days to distribute it before releasing vulnerability details to the public. It seems that NGS has reached a reasonable compromise. If they discover a vulnerability, they give the vendor time to fix it and deploy it before using the club of public disclosure on recalcitrant vendors.
They thereby minimize the possible risk of allowing hackers to unleash an exploit on the public prior to a fix being deployed due to premature disclosure. But they also hold the vendor's feet to the fire by keeping the option of public release available in their back pocket. -- My Web Page Join Red Room Forum |
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  fuziwuzi Not born yesterday Premium join:2005-07-01 Atlanta, GA
| reply to TKJunkMail Re: Giant Jap satellite must still obey law of phy
said by TKJunkMail :One thing that the news item left out of this wonderful product is that the average latency of about 800 msecs for a satellite connection( » Satellite Forum FAQ » What are the average ping times for satellite? ) makes the product a poor supplier of interactive internet browsing. It will suffer the same problems that the Direcway( » HughesNet Satellite ) system does. That doesn't mean it doesn't have a lot of uses. It just means that when the marketing types start hyping the product they conveniently overlook its limitations. And in comparing it to fiber optic without mentioning latency issues, they are doing just that. You're assuming a geosynchronous orbit, however. If it were in a LEO (Low Earth Orbit), the latency could be far less. Even with geosynchronous, the latency only becomes a problem when using something like VoIP or gaming... for standard web browsing and email, it is not an issue. |
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