[CalendarServer-users] SSL Ciphers

Andre LaBranche dre at apple.com
Mon Mar 10 13:59:43 PDT 2014


A great SSL resource is the "OpenSSL Command-line Howto", which you can find here:


In particular, try this command, and please respond with the output:

openssl s_client -connect yourserver:8443

You could also be dealing with a TLS version mismatch. The output from the openssl command above will tell us which cipher and TLS version is used upon a successful connection.


On Mar 9, 2014, at 4:23 PM, m at ainc.be wrote:

> I've setup the latest version of CalendarServer on Wheezy and everything works fine with the exception of SSL functionality. The public, private and CA cert files are configured as described in the default configuration and they are accessible by CalendarServer. Nothing can connect to the SSL port, and neither the access or error logs show anything. Phython2.7 is listening on the SSL port. The only thing I could get was from Firefox giving the error: (Error code: ssl_error_no_cypher_overlap). I tried setting the SSLChiphers key to ALL in caldavd.plist but nothing happened.
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