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TLS 1.1 protocol still detected on ONTAP management interface after being disabled

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

ONTAP 9

Issue

  • TLS 1.1 was disabled using the security config modify commands.
  • However, security scans (such as OpenSSL) still report that the ONTAP management interface (port 443) responds to TLS 1.1 connections.

::*> security config show
...
Supported Protocols: TLSv1.2, TLSv1.3
...

:~> openssl s_client -connect 10.**.**.46:443 -tls1_1
CONNECTED(00000003)
...
Protocol  : TLSv1.1
Cipher    : ECDHE-RSA-AES256-SHA
...

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