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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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  • Hello Ben,

    Thank you for contacting the Sophos Community.

    Is this the only RED connected to the Firewall? or you have other's but this is the only one not connecting?

    Can you please check the Default certificate for the XG is filled up.

    Regards,

Reply
  • Hello Ben,

    Thank you for contacting the Sophos Community.

    Is this the only RED connected to the Firewall? or you have other's but this is the only one not connecting?

    Can you please check the Default certificate for the XG is filled up.

    Regards,

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