news.telenet.be wrote:
Dear Dr. Mills
I installed the NTP version 4.2.0 from the meinberg.de website. This Time
syncronization service works fine on a test server. Thank you David for your
reply.
Unfortunatly, I didn't find information about the configuration of a secure
connection to the public time servers with ESP, AH or MD5. You suggest on
the website of the University of Delaware to use the Autokey security
Architecture, Protocol and Algorithms
(http://www.eecis.udel.edu/~mills/database/reports/stime1/stime.pdf).
But I'm a bit confused about Autokey! How do I use this application with the
NTP version 4.2.0 for Windows to transmit secure NTP requests to the public
time servers? Where can I find this application?
Best regards,
Patrice
I think you may misunderstand Autokey security.
All Autokey, or any of the other encryption systems does for you, is to
authenticate the server to the client. It gives you some assurance that
the server sending the packet really is who he claims to be. The packet
has an encrypted signature. Anybody can read the request packet and
anybody can read the reply packet. After all, there is nothing secret
about the correct time, your IP address, the server's IP address, etc.
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