link-layer encryptors for Ethernet?

[Steven M. Bellovin]

In message <420A39EE.8030700 at garlic.com>, Anne & Lynn Wheeler writes:
>the internal network was larger than the arpanet/internet just about the 
>whole time up until about mid-85. all the links leaving physical premise 
>had to be encrypted ... there was the claim that over half of all 
>encrypters in the world were on the internal network (and put at least 
>one of the major products/companies into business). lots of random 
>comments about about the internal network
>http://www.garlic.com/~lynn/subtopic.html#internalnet
>
>small sample posting about the internal net passing 1000 nodes not long 
>after internet passed 255 nodes.
>http://www.garlic.com/~lynn/internet.htm#22
>
>one of the big issues in part of this period was getting encrypters on 
>links that cross national boundaries.
>

Yup.  Often, large corporations had policies requiring them, because of 
how frequently a transoceanic fiber would be cut and the circuits 
rerouted to satellite.

		--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb



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