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On 05/03/2016 11:38 AM, Derek Belcher
wrote:
We are currently working on getting the site back up. The hosting service(openshift) is misbehaving, and we are waiting for assistance. Here is the contents of that page: # How to Disable SSLv3 -------------------------- With the recent discovery of the Poodlebleed vulnerability bug (2014/10/15), a minimum of TLS1.1 should be used instead of SSLv3. ### Disable SSLv3 in 389 Directory Server Here is an example of how to use ldapmodify to disable SSLv3 and enable TLS # ldapmodify -D "cn=directory manager" -W dn: cn=encryption,cn=config changetype: modify replace: nsSSL2 nsSSL2: off - replace: nsSSL3 nsSSL3: off - replace: nsTLS1 nsTLS1: on Set the SSL version range to enforce TLS1.1 through TLS1.2. # ldapmodify -D "cn=directory manager" -W dn: cn=encryption,cn=config changetype: modify replace: sslVersionMin sslVersionMin: TLS1.1 - replace: sslVersionMax sslVersionMax: TLS1.2 Note: If sslVersionMax is not explicitly set, the supported version by the installed NSS is applied to sslVersionMax. If sslVersionMin is not explicitly set, even if NSS supports SSL3, TLS1.0 is set to sslVersionMin, by default. You need to restart the server for this to take effect. ### Disable SSLv3 in favor of TLSv1.1(or higher) in 389 Administration Server - Stop the Admin Server - Edit /etc/dirsrv/admin-serv/console.conf Change: NSSProtocol SSLv3,TLSv1 To: NSSProtocol TLSv1.1 - Start the Admin server ### Enforce TLS verson range in the console Edit the console preferences file and add the following lines: # vi ~/.389-console/Console.1.1.12.Login.preferences sslVersionMin: TLS1.1 sslVersionMax: TLS1.2 ### Verify SSLv3 is Disabled You can use the openssl client tool to verify the SSL Handshake does NOT take place. openssl s_client -connect hostname:389 -ssl3 # DS Port openssl s_client -connect hostname:636 -ssl3 # DS Secure Port openssl s_client -connect hostname:9830 -ssl3 # Admin Server Port For more information see <https://access.redhat.com/articles/1232123> There is also a script available from the above link that will run the openssl client tool and verify the SSL3 status for you.
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