[openssl-users] Help with ssl error

Viktor Dukhovni openssl-users at dukhovni.org
Fri Apr 14 18:49:27 UTC 2017

> On Apr 14, 2017, at 9:48 AM, Joseph Southwell <jsouthwell at serengeti.com> wrote:
> Version 1.1 openssl
> openssl.exe s_client -connect hostname:16370 -starttls ftp
> 877788:error:1409442F:SSL routines:ssl3_read_bytes:tlsv1 alert insufficient security:ssl\record\rec_layer_s3.c:1385:SSL alert number 71

The remote host sent an "insufficient security" TLS alert.

> The host I am connecting to apparently only supports the following 2 ciphers:
> What should I do to make this work?

Perhaps it is expecting a client certificate?  Retry with:

 $ openssl s_client -state -msg -connect hostname:16370 -starttls ftp

and see whether it solicited a client certificate.


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