TLS / Cipher Best Practices resulting in failing monitors

Modified on 2025-06-10 20:13:23 +0200

After updating the servers TLS and Ciphers, I'm receiving errors on a number of HTTP Advanced sensors.

Error connecting with SSL. Error connecting with SSL. error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

How can I correct this issue?

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Hello Stefan,

What exact Ciphers did you block and which are available? Did you already tried to catch the handshake via WireShark to see what Ciphers are missing on either side?

Kind regards,
Felix Saure, Tech Support Team

Jul, 2022 - Permalink

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TLS / Cipher Best Practices resulting in failing monitors

Article CommentsAttention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.