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https://issues.apache.org/jira/browse/HADOOP-12668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15433735#comment-15433735
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Zhe Zhang commented on HADOOP-12668:
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I cherry-picked this to branch-2.7 in support of HADOOP-12765
> Support excluding weak Ciphers in HttpServer2 through ssl-server.conf
> ----------------------------------------------------------------------
>
> Key: HADOOP-12668
> URL: https://issues.apache.org/jira/browse/HADOOP-12668
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 2.7.1
> Reporter: Vijay Singh
> Assignee: Vijay Singh
> Priority: Critical
> Labels: common, ha, hadoop, hdfs, security
> Fix For: 2.8.0, 2.7.4
>
> Attachments: Hadoop-12668.006.patch, Hadoop-12668.007.patch,
> Hadoop-12668.008.patch, Hadoop-12668.009.patch, Hadoop-12668.010.patch,
> Hadoop-12668.011.patch, Hadoop-12668.012.patch, test.log
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Currently Embeded jetty Server used across all hadoop services is configured
> through ssl-server.xml file from their respective configuration section.
> However, the SSL/TLS protocol being used for this jetty servers can be
> downgraded to weak cipher suites. This code changes aims to add following
> functionality:
> 1) Add logic in hadoop common (HttpServer2.java and associated interfaces) to
> spawn jetty servers with ability to exclude weak cipher suites. I propose we
> make this though ssl-server.xml and hence each service can choose to disable
> specific ciphers.
> 2) Modify DFSUtil.java used by HDFS code to supply new parameter
> ssl.server.exclude.cipher.list for hadoop-common code, so it can exclude the
> ciphers supplied through this key.
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