<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1442950289588_4104"><span id="yui_3_16_0_1_1442950289588_4110">The links in the ARPAnet were not related to traffic flow or shared interests. No conclusion about interests based on network topology can be drawn. ARPA hired Network Analysis Corporation to design the network topology based on factors such as circuit costs and the provision of alternate paths between IMPs for reliability against single failures. I do not believe NSA was especially interested in interacting with either NBS or SDAC, but whether they were or not cannot be deduced from the topology of IMPs and circuits.</span></div><div id="yui_3_16_0_1_1442950289588_4444"><br><span id="yui_3_16_0_1_1442950289588_4110"></span></div><div id="yui_3_16_0_1_1442950289588_4447"><span id="yui_3_16_0_1_1442950289588_4110">Cheers,</span></div><div id="yui_3_16_0_1_1442950289588_4449"><span id="yui_3_16_0_1_1442950289588_4110">Alex McKenzie</span></div><br> <div id="yui_3_16_0_1_1442950289588_4275" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1442950289588_4274" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1442950289588_4273" dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> Jacob Goense <dugo@xs4all.nl><br> <b><span style="font-weight: bold;">To:</span></b> internet-history@postel.org <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, September 22, 2015 3:15 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [ih] Eyes on the Internet?<br> </font> </div> <div id="yui_3_16_0_1_1442950289588_4277" class="y_msg_container"><br>On 2015-09-22 13:02, Craig Partridge wrote:<br clear="none">> My guess, purely a guess, is this was in the NSA research group. For a <br clear="none">> number<br clear="none">> of years, NSA had an excellent data comms research group (may still) <br clear="none">> focused<br clear="none">> on how to meet NSA's data comms requirements (think moving around all <br clear="none">> the<br clear="none">> data it collected in a secure fashion -- *not* how to hack systems). <br clear="none">> Some<br clear="none">> of that research group had ARPANET/Internet access and participated in<br clear="none">> Internet standards work in the 1970s, 1980s and 1990s.<br clear="none"><br clear="none">That would explain the link to the east (NBS). The west link (SDAC) was<br clear="none">probably a genuine interest in seismic data. Ears on the ground.<br clear="none">See eg. page 14 <a shape="rect" href="http://www.dtic.mil/dtic/tr/fulltext/u2/a020480.pdf" target="_blank">http://www.dtic.mil/dtic/tr/fulltext/u2/a020480.pdf</a><div class="qtdSeparateBR"><br><br></div><div class="yqt1865405471" id="yqtfd09202"><br clear="none"><br clear="none">_______<br clear="none">internet-history mailing list<br clear="none"><a shape="rect" ymailto="mailto:internet-history@postel.org" href="mailto:internet-history@postel.org">internet-history@postel.org</a><br clear="none"><a shape="rect" href="http://mailman.postel.org/mailman/listinfo/internet-history" target="_blank">http://mailman.postel.org/mailman/listinfo/internet-history</a><br clear="none">Contact <a shape="rect" ymailto="mailto:list-owner@postel.org" href="mailto:list-owner@postel.org">list-owner@postel.org</a> for assistance.<br clear="none"></div><br><br></div> </div> </div> </div></body></html>