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We are running Kerio Connect on a Ubuntu 10.04 server.
I would like to enable perfect forward security.

Article with more information: http://heise.de/-1932806

When I check for perfect forward security with "openssl s_client -cipher 'ECDH:DH' -connect login.live.com:443", I get the following response
Protocol : TLSv1

When running it against my machine i get

140334437996192:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure:s23_clnt.c:724:
no peer certificate available
No client certificate CA names sent
SSL handshake has read 7 bytes and written 227 bytes
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE

so my machine does not support ECHD.

Does anybody know how to activate ECHD for Kerio on Ubuntu ?

After more research: ECHD does not even seem to be installed on the machine.
root@kerio-ubuntu:~# openssl ciphers

Does Kerio only work with the chiphers installed on the Server ?
Anybody an idea how to install it on Ubuntu 10.04?


[Updated on: Wed, 21 August 2013 00:40]

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