for 3.5..5 since the default security protocol is TLSv1.2 :
ssl.protocol and ssl.quorum.protocol : (Java system properties: 
zookeeper.ssl.protocol and zookeeper.ssl.quorum.protocol) New in 3.5.5: 
Specifies to protocol to be used in client and quorum TLS negotiation. Default: 
TLSv1.2

any reason (other than political) why you cannot implement TLS (v1.2) instead 
of SSLv3 for 3.5.5 ?

https://zookeeper.apache.org/doc/current/zookeeperAdmin.html
ZooKeeper: Because Coordinating Distributed Systems is a Zoo - Apache ZooKeeper 
- Home<https://zookeeper.apache.org/doc/current/zookeeperAdmin.html>
For any operating system not explicitly mentioned as supported in the matrix, 
components may or may not work. The ZooKeeper community will fix obvious bugs 
that are reported for other platforms, but there is no full support.
zookeeper.apache.org

?

________________________________
From: rammohan ganapavarapu <[email protected]>
Sent: Tuesday, May 28, 2019 12:56 PM
To: [email protected]
Subject: Admin Server Authentication/SSL

Hi,

Does zk AdminServer in  3.5 support authentication and SSL?

Thanks,
Ram

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