[email protected] (Charles Mills) writes: > Also is not fiber preferred over copper for secure applications because it > does not act as an antenna?
the internal network was larger than the arpanet/internet from just about the beginning until possibly late 85 or early 86. the corporation required encryption on all links leaving corporate premise (use to be all sorts of hassle with gov. agencies when internal network links crossed national boundaries). in the mid-80s, there was claim that internal network had more than half of all link encrypters in the world. misc. past posts mentioning internal network http://www.garlic.com/~lynn/subnetwork.html#internalnet also, for the corporate home terminal program there were special "encryping" pc modems produced. there is folklore about one being installed at senior executive home ... and being an old EE, he used his tongue to check for contacts on the RJ telephone jack ... just as it rang. after that there was requirement that all modems made by the corporation had the RJ jack recessed so that babies and senior executives could get their tongue in them. semi-related to 3737 CTCA channel-extender over T1 (in late 80s) ... recent reference in this thread: http://www.garlic.com/~lynn/2011g.html#75 also in this a.f.c. thread http://www.garlic.com/~lynn/2011g.html#77 I had done channel-extender over T1 in 1980 for STL moving 300 people from IMS group to offsite bldg (parts of it channel over campus T3 Collins digial radio ... aka microwave ... that the company had in the area). I had to do real high-speed ... not the SNA spoofing that the communication group did with the 3737 in late 80s. I ran a project I called high-speed data transport (HSDT) to differentiate from what the communication group was up to ... misc. past posts mentioning HSDT http://www.garlic.com/~lynn/subnetwork.html#hsdt One of the problems was amount of the money I had to pay for T1 link encryptors ... and very difficult finding any that ran faster than T1 ... so got involved in designing something that would run significantly faster, cost significantly less to build and was significantly more secure. a couple recent posts mentioning then discovering there was three kinds of crypto: http://www.garlic.com/~lynn/2011g.html#20 TELSTAR satellite experiment http://www.garlic.com/~lynn/2011g.html#60 Is the magic and romance killed by Windows (and Linux)? -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
