On 2/8/2011 7:36 AM, Glen Di Persio wrote:
I'm trying to connect to a Contivity VPN using Shrewsoft. The Contivity
client connects with Diffie-Hellman group 8 (EC2N), while the Shrewsoft
client only supports groups 1/2/5/14/15. The Contivity server will not
respond to my initial ISAKMP packet from Shrewsoft. Is DH Group 8 a
proprietary Nortel transform, or is it more widely used?
DH group 8 is based on Elliptic Curve Cryptography ...
http://tools.ietf.org/html/rfc4753
http://en.wikipedia.org/wiki/ECC_patents
This technology is quite arguably covered by patents so we have no plans
to implement it.
-Matthew
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