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The Advanced Research Projects Agency Network (ARPANET) was an early packet-switching network and the first network to implement the TCP/IP protocol suite. Both technologies became the technical foundation of the internet. The ARPANET was initially founded by the Advanced Research Projects Agency of the Defense Department, and was operated by the military during the two decades of its existence, until 1990. The first successful host to host connection on the ARPANET was made between Stanford Research Institute programmer Bill Duvall, and UCLA student programmer Charley Kline on Oct. 29, 1969. Kline connected from UCLA’s SDS Sigma 7 Host computer, in Boelter Hall room 3420, to the Institute’s SDS 940 Host computer. Kline typed the command “login,” and about an hour later, after Duvall adjusted parameters on the SDS 940, Kline successfully logged in to the SDS 940. Hence, the first two characters successfully transmitted over the ARPANET were “lo.” The first permanent ARPANET link was established on Nov. 21, between the IMP at UCLA and the IMP at the Stanford Research Institute. By Dec. 5 the initial four-node network was established.
(Wikipedia)
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