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https://issues.apache.org/jira/browse/FLINK-20959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17265826#comment-17265826
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Robert Metzger commented on FLINK-20959:
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I believe Chesnay posted the wrong Jira ID. I guess he meant:  
https://issues.apache.org/jira/browse/FLINK-20875

What we generally recommend users is securing access to the REST API: restrict 
who can access the REST API. Not everyone in a company should be allowed 
accessing the REST API.
You could for example run Flink in a cluster that is in a (virtual) private 
network, where only a few people have access. Or you set up a firewall 
restricting access to Flink ports.

If you need to control who can access Flink, you can run Flink's REST API 
behind a reverse proxy (for example nginx).

> How to close Apache Flink REST API
> ----------------------------------
>
>                 Key: FLINK-20959
>                 URL: https://issues.apache.org/jira/browse/FLINK-20959
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / REST
>    Affects Versions: 1.10.2
>            Reporter: wuchangwen
>            Priority: Major
>             Fix For: 1.10.2
>
>
> Apache Flink 1.10.2 hasĀ  CVE-2020-17518 vulnerability in the REST API. Now 
> that I want to turn off the REST API service, how should I set up the 
> configuration file?



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