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https://issues.apache.org/jira/browse/CASSANDRA-2274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13148539#comment-13148539
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David Allsopp commented on CASSANDRA-2274:
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Just a thought - I don't know what the overhead is with encryption enabled, but
if this is a major issue, then presumably encryption could be enabled with a
cypher suite that doesn't actually _encrypt_, thus providing just data
_integrity_ (MD5/SHA checksum) or even a 'null' encryption algorithm? I assume
(!) that this would provide authentication via the certificates, without the
encryption overhead.
Listing the supported suites using
SSLContext.getServerSocketFactory().getSupportedCipherSuites() includes
SSL_RSA_WITH_NULL_MD5 and SSL_RSA_WITH_NULL_SHA - which are suites used for
integrity only (checksum).
> Restrict Cassandra cluster node joins to a list of named hosts
> --------------------------------------------------------------
>
> Key: CASSANDRA-2274
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2274
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.7.2
> Environment: All
> Reporter: Andrew Schiefelbein
>
> Because firewalls and employees are not infallible it would be nice to
> restrict the ability of any node to join a cluster to a list of named hosts
> in the configuration so that someone would be unable to start a node and
> replicate all the data locally. I understand that in order to do this the
> person must know the seed servers and the cluster name and to extract the
> data they will need a userid and password but another level of security would
> be to force them to execute any brute force attack from a locked down server
> instead of replicating all the data locally.
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