Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

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[No issue] XGS3100 and RED 15: Can not do SSL handshake on Socket

Hello Community,

Today we migrated a UTM to a new XGS3100. We have a RED15 that was connected to the UTM and worked well. After connection to XGS we see only this in the RED Log and the RED is displayed as offline:

Thu Jun 10 04:52:10 2021 REDD ERROR: server: Can not do SSL handshake on Socket accept from '123.192.123.192': SSL accept attempt failed because of handshake problems
Thu Jun 10 04:52:11 2021 REDD ERROR: server: Can not do SSL handshake on Socket accept from '123.192.123.192': SSL accept attempt failed because of handshake problems error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca
Thu Jun 10 04:52:14 2021 REDD INFO: client: (Re-)loading device configurations

Enabling and disabling the RED Service does not change anything. The same with delete RED 15 configuration and building a new configuration.

Has anybody an idea?



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