21–30 of 51 posts
For a geographic representation, try: * ARPANET Maps || http://som.csudh.edu/fac/lpress/history/arpamaps/
EDIT: For a less deep link go to http://walden-family.com/bbn/
One interesting aside is you can see from that even this early in the evolution of what's still a very sparse network, how dense the resources are in California, presaging the eventual concentration of the "internet business" there. Sensitive dependence on initial conditions and such. It's also interesting to note that the DC area is the #2 (arguably tied with Boston) given how relatively inconsequential that communi…
That was because Tysons Corner was (and still is) a major hub of the Internet. Initially because of the DOD and military contractors, but a big chunk of Amazon's cloud is located in data centers there and nearby.
Which modern protocols even existed back then? IP? TCP? FTP?
Host addresses were only 8 bits (zero was reserved), so there could only be up to 255 hosts on the ARPANET.
NCP was a simplex protocol, not full duplex like TCP/IP, so each port=>port connection transmitted data in only one direction, and applications would use an even/odd pair of ports for two-way communication.
The parity of the ports at each end of the connection was required to be different: you couldn't connect an even port to another even port, or an odd port to another odd port. "Homosocketuality" was strictly forbidden by internet protocols! NCP's mandatory "heterosocketuality" was called the "Anita Bryant feature". [2]
Which modern protocols even existed back then? IP? TCP? FTP?
FTP and Telnet were around by 1974. So was an early mail protocol (described in RFC 524, https://www.rfc-editor.org/rfc/rfc524.txt) which used FTP as mail transfer agent. The first SMTP-like mail protocol was probably MTP in 1980 (RFC 722, https://www.rfc-editor.org/rfc/rfc772.txt).
Go read some RFCs -- they're great sources of early Internet history! Start here: http://www.rfc-editor.org/rfc-index.html
Hi there—original tweeter here. Some context for the picture—my father, Paul, was the business manager for the computer science department at Carnegie Mellon at the time, and is a fabulous record-keeper, so he kept all sorts of interesting things from that era. He was also one of the founders of Three Rivers Computer as well as PERQ, which were tech transfer spin-outs from the CS dept in the seventies.
This version from 1974 includes the first international link to UCL in London. As no-one had budget for a dedicated transatlantic link, it was piggybacked on a link via NORSAR in Norway that was intended for seismic monitoring of nuclear tests. http://personalpages.manchester.ac.uk/staff/m.dodge/cybergeo...
What do IMP and TIP stand for here?
[1] https://en.wikipedia.org/wiki/Interface_Message_Processor
This version from 1974 includes the first international link to UCL in London. As no-one had budget for a dedicated transatlantic link, it was piggybacked on a link via NORSAR in Norway that was intended for seismic monitoring of nuclear tests. http://personalpages.manchester.ac.uk/staff/m.dodge/cybergeo...
...being a bit of a pedant (and Norwegian!) I'd like to point out that the first international link was precisely the one to NORSAR at Kjeller; the link over the North Sea to UCL was the second. :) (Kjeller/NORSAR was hooked up in June 1973 using a blistering fast 9.6kbps link, if memory serves)
What do IMP and TIP stand for here?