TLS FATAL ALERT log message received

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Technical Level

Solution ID	sk163616
Technical Level
Product	HTTPS Inspection
Version	R80.40
Date Created	07-Jan-2020
Last Modified	23-Jun-2022

Symptoms

TLS FATAL ALERT log message received

Cause

The most common root causes are:

Security Gateway CA has not been imported into client's trust store.
The client pinning the certificate, the CA or the public key. Such client will never trust the Security Gateway.

Usually in such cases, the client will terminate the connection by sending a TLS alert such as: certificate_unknown(46), unknown_ca(48) , bad_certificate(42).

For more information regarding the exact error alert, look for the received alert in RFC 5246, section-7.2.2

Solution

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