02-05-2012, 17:28 #1
Microsoft substitui infraestrutura pública do Skype por servidores próprios
Após o Skype ter sido vendido para a Microsoft, o número de conexões simultâneas cresceu 37% e ultrapassou 40 milhões no mês passado.
Desde 2003, quando foi lançado, o Skype utiliza o conceito de "supernodes", então computadores de usuários que tinham banda, processamento, e outras caracteristicas adequadas para constituir a rede P2P que suporta a operação do Skype. A cada momento, mais de 48 mil computadores exerciam essa função, cada um provendo conexão para cerca de 800 usuários.
Com o aumento da demanda, e para dar maior segurança e estabilidade ao serviço, a Microsoft substituiu esses supernodes rodando em computadores de usuários por 10 mil supernodes rodando em servidores da Microsoft hospedados em data centers da empresa, cada servidor com capacidade teórica de prover 100 mil conexões simultaneas.
Detalhe: Esses servidores da Microsoft rodam LINUX
Skype replaces P2P supernodes with Linux boxes hosted by Microsoft (updated)
Última edição por 5ms; 02-05-2012 às 17:36.
02-05-2012, 17:46 #2
Skype agora tem supernodes...
...Mas tornou-se incompátivel com meu N63
Não sei dizer se simplesmente deletei o software do celular, porque raramente uso, mas tenho em outros dispositivos e se não removi dos demais, acredito que não tenha feito isso apenas no celular.
Então na semana passada naveguei no site do skype, mandei até sms com instruções de instalações p/ meu aparelho (simplesmente manda um sms p/ acessar skype.com/m auhauahuahuahau)
E ao acessar o site, fui surpreendido com um aviso de que meu aparelho não é compátivel.
Não satisfeito, acessei a loja nokia do celular, achei o skype, e ao tentar fazer download, o botão de download estava simplesmente inativo.
Tentei até achar alguma coisa rapidamente no google falando sobre isso, mas como não achei nada, me dei conta que acho que só eu ainda utilizo esse celular huahuahuahuahua
02-05-2012, 18:05 #3
O Skype nunca foi compativel com o meu Samsung SGH-F480L
02-05-2012, 18:12 #4
E agora com os supernodes todos na mão da Microsoft, o Skype perdeu a quase impossibilidade de ser bloqueado/controlado por governos ou por contratos excusos que ele tinha. Mal, sapão.
02-05-2012, 18:22 #5
Com os recursos adequados, há muitos anos operadoras e governos podem controlar / bloquear / fuçar no tráfego Skype. Que o diga a Brasil Telecom, garota-propaganda da Narus em 2006
NarusInsight Intercept Suite - Packet-level, flow-level, and application-level usage information is captured and analyzed as well as raw user session packets for forensic analysis, surveillance or in satisfying regulatory compliance for lawful intercept. The capabilities include playback of streaming media (i.e. VoIP), rendering of Web pages, examination of e-mail and the ability to analyze the payload/attachments of e-mail or file transfer protocols. (source: Narus.com)
The NarusInsight Discover Suite (NDS) captures and classifies traffic and data on monitored links in real time at true carrier speeds (up to 10G/OC-192). Detailed layer 3 to layer 7 data are collected and correlated across every link and element on the network. NDS empowers users to manage IP traffic and applications including VoIP, Skype, P2P (e.g., BitTorrent, e-Donkey/e-Mule, FastTrack/Kazaa, Gnutella, etc.), messaging (AOL IM/ICQ, Yahoo IM, MSN Messenger, Jabber, IRC, MMS), streaming media (RTP, RTCP, RTSP), e-mail (SMTP,POP3,IMAP), Web browsing and push to talk (PTT). (source: Narus)
Última edição por 5ms; 02-05-2012 às 18:26.
02-05-2012, 18:56 #6
SAN JOSE, CA - 16 Feb 2006: RSA CONFERENCE -- IBM and Narus announced today that Brasil Telecom, one of the largest telecommunications companies in Brazil, has implemented the industry's first solution to effectively help identify and collect unclaimed revenues generated across networks, known in the industry as "revenue leakage." Using IBM BladeCenter and Narus' carrier-class IP traffic analysis system, Brasil Telecom can now efficiently manage revenue streams across services running on their networks.
The engineers at Narus weren't intending to create Big Brother's dream machine when they began writing software a decade ago to help phone companies send out more detailed bills.
Narus was founded in 1997 and has more than 100 employees around the globe. Some of the world’s largest phone and Internet carriers have signed up as Narus customers, including T-Mobile, U.S. Cellular, Brasil Telecom, Korea Telecom, Telecom Egypt, Saudi Telecom and Shanghai Telecom, according to the company.
Arnold Ness, chief technical officer of IBM’s Americas Next Generation Network Team, said Narus’ ability to intercept traffic — the capability allegedly used by the NSA — is critical to U.S. carriers that must comply with a federal mandate to be able to intercept digital traffic by next April.
02-05-2012, 20:51 #7
Aqui uma matéria mais recente sobre a Narus.
NARUS, super computers, and the telecom companies behind the scenes | Privacy SOS
NARUS, super computers, and the telecom companies behind the scenes
While the supercomputer systems NARUS makes are likely not available to state and local law enforcement (except perhaps to mega-departments like the NYPD), they are in use by the largest and most secretive of all the US intelligence agencies: the NSA.
Boeing subsidiary Narus and other companies like it, including Verint, Comverse and NICE, automate the collection of most of the electronic data in the world, including mostly everything on the internet, including voice-over IP calls through services like Skype; the vast majority of phone conversations and mobile communications; and the transactional records that undergird these international telecommunications systems.
Also, check out this video, below, showing how Narus was used by the Egyptian government to crack-down on protest leaders during the recent revolution against Mubarak in that country.
02-05-2012, 21:37 #8
Enquanto a visão do Skype é "x bytes com o IP tal", é uma coisa. Quando ela vira log de chamadas telefônicas de n minutos com o usuário fulano.detal, nome Fulano de Tal, endereço xxx, cartão de crédito nnnnnn, é outra...
06-05-2012, 15:09 #9
FBI: We need wiretap-ready Web sites - now
CNET learns the FBI is quietly pushing its plan to force surveillance backdoors on social networks, VoIP, IM, and Web e-mail providers, and that the bureau is asking Internet companies not to oppose a law making those backdoors mandatory.
The FBI general counsel's office has drafted a proposed law that the bureau claims is the best solution: requiring that social-networking Web sites and providers of VoIP, instant messaging, and Web e-mail alter their code to ensure their products are wiretap-friendly.
"If you create a service, product, or app that allows a user to communicate, you get the privilege of adding that extra coding," an industry representative who has reviewed the FBI's draft legislation told CNET. The requirements apply only if a threshold of a certain number of users is exceeded, according to a second industry representative briefed on it.
In addition to the FBI's legislative proposal, there are indications that the Federal Communications Commission is considering reinterpreting CALEA to demand that products that allow video or voice chat over the Internet -- from Skype to Google Hangouts to Xbox Live -- include surveillance backdoors to help the FBI with its "Going Dark" program. CALEA applies to technologies that are a "substantial replacement" for the telephone system.
A further expansion of CALEA is unlikely to be applauded by tech companies, their customers, or privacy groups. Apple (which distributes iChat and FaceTime) is currently lobbying on the topic, according to disclosure documents filed with Congress two weeks ago. Microsoft (which owns Skype and Hotmail) says its lobbyists are following the topic because it's "an area of ongoing interest to us." Google, Yahoo, and Facebook declined to comment.
industry groups aren't necessarily going to roll over without a fight. TechAmerica, a trade association that includes representatives of HP, eBay, IBM, Qualcomm, and other tech companies on its board of directors, has been lobbying against a CALEA expansion. Such a law would "represent a sea change in government surveillance law, imposing significant compliance costs on both traditional (think local exchange carriers) and nontraditional (think social media) communications companies," TechAmerica said in e-mail today.