Connectrix MDS 系列：SSL 或 TLS 伺服器支援傳輸層安全性 TLS1.1

「安全通訊端層 （SSL） 或傳輸層安全性 （TLS） 伺服器支援傳輸層安全性 （TLSv1.1）」

Threat: The scan target supports version 1.1 of the TLS protocol. That version is in the process of being deprecated and is no longer recommended. Instead the newer versions 1.2 and/or 1.3 should be used. The TLSv1.1 protocol itself does not have any currently exploitable vulnerabilities. However some vendor implementations of TLSv1.1 have weaknesses which may be exploitable. This QID is posted as potential, when servers require client certificates and we cannot complete the handshake.

結果：支援 TLSv1.1。

Solution: Disable the use of TLSv1.1 protocol in favor of a cryptographically stronger protocol such as TLSv1.2.
The following openssl commands can be used to do a manual test: openssl s_client -connect ip:port -tls1_1
If the test is successful, then the target support TLSv1.1.

從以下命令擷取交換器的輸出：

`show file volatile:///nxapi.log`

HTTPS port is 8443
Options gathered - vdc: 1, servers: 4, http: -1, https: 8443,
cert: /var/nginx/cert/server.crt_vdc_1, key: /var/nginx/cert/server.key_vdc_1, sandbox: false, protocols: TLSv1.2, ciphers: false

這表示 TLS 1.0 和 1.1 已停用 並在交換器上啟用 TLS v1.2因此，漏洞可以斷定為誤報。

如果仍接受 TLSv1 和 TLS v1.1，您可以手動設定所使用的 TLS 版本：

switch(config)# nxapi ssl protocols TLSv1.2          <--To enable TLSv1.2

switch(config)# no nxapi ssl protocols TLSv1         <--To disable TLSv1-disabling TLSv1 removes TLS 1.0 and 1.1.