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TLS / Cipher Best Practices resulting in failing monitors

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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?

errors ssl tls

Created on Jul 1, 2022 8:52:08 AM



1 Reply

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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

Created on Jul 6, 2022 11:04:26 AM by Felix Saure [Paessler Support]




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