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Posted to issues@commons.apache.org by "Sebb (JIRA)" <ji...@apache.org> on 2017/02/07 20:19:41 UTC

[jira] [Commented] (NET-605) FTPSClient forces IP in SubjectAlternativeNames field for server certificate validation instead of hostname

    [ https://issues.apache.org/jira/browse/NET-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15856709#comment-15856709 ] 

Sebb commented on NET-605:
--------------------------

What is the code that you are using? Simplest possible exampe please.

> FTPSClient forces IP in SubjectAlternativeNames field for server certificate validation instead of hostname
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: NET-605
>                 URL: https://issues.apache.org/jira/browse/NET-605
>             Project: Commons Net
>          Issue Type: Bug
>          Components: FTP
>    Affects Versions: 3.5
>            Reporter: Adam Lynam
>
> We have an FTP Server with a signed certificate, with both CN and SAN DNS entries set to the respective hostname of the machine.
> When attempting to connect using FTPSClient, we get java.security.cert.CertificateException: No subject alternative names matching IP address x.x.x.x found. The FTPSClient appears to resolve the IP address and pass that through the SSLSocket where it eventually raises the exception.
> While we initially encountered the error against our internal FTP server, we have confirmed the same issue against a public FTP server. ftps://demo:password@test.rebex.net.



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