My indexers are running Splunk Enterprise v6.5.3. I recently upgraded a "test" Universal Forwarder in my environment to v6.6.5, and I'm no longer getting logs going to my indexers from this "test" UF after the upgrade.
I'm seeing a bunch of these errors before the logs stopped: WARN SSLCommon - Received fatal SSL3 alert. ssl_state='SSLv3 read server hello A', alert_description='handshake failure'.
Is this an SSL or cipherSuite incompatibility issue between the two different versions of Splunk? Is there a workaround to get the test forwarder sending logs again, or do I have no choice but to either 1. downgrade the forwarder -OR- 2. upgrade my indexers?