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https://issues.apache.org/jira/browse/HADOOP-12668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15096593#comment-15096593
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Vijay Singh commented on HADOOP-12668:
--------------------------------------

Please note that between patch 5 and patch 6 . I only added changes to 
ssl-server.xml.example file which is not utilized for any test execution and 
the set of test that failed were mutually exclusive leading me to strongly 
believe that these failures are intermittent failures rather than caused by 
code itself. 
Additionally, the code does not alter or touch any of the functionality for 
failed test cases. I suggest the code changes be reviewed and feedback be 
provided. I will appreciate feedback if any and will work on resolving them if 
there are any issues in the contributed patch. Looking forward to suggestions 
if any.

> Modify HDFS embeded jetty server logic in HttpServer2.java to exclude weak 
> Ciphers 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
>         Attachments: Hadoop-12668.006.patch
>
>   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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