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Add debugging/information options for encrypted client connections

While configuring/troubleshooting a Db2 LUW server in a setup with encrypted connections, we need methods to identify the encryption status and ciphers used.

E.g. Db2 client is connecting to a Db2 LUW server: I have no means to verify, which TLS cipher was negotiated and if TLS11 or SSL or TLS12 was used.

In MON_GET_CONNECTIONS I just get SSL4 in the column CLIENT_PROTOCOL but I cannot see what level/port was used.

We could need a db2diag.log or notification log entry for the connection type and cipher negotiated.

If I use the simpler AUTHENTICATION=SERVER_ENCRYPT, I cannot see, which connection complies or which is using ALTERNATE_AUTH_ENC.

The same issue appears with Db2 Connect servers to host connections. I can only see on Db2 for z/OS, if the Db2 LUW server is using a secured connection.

At least, if Db2 is all delegating to GSKit, there should be a documented way, how to retrieve this information via GSKit.

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Sep 8 2020
  • Future consideration
Who would benefit from this IDEA? All Db2 LUW customers configuring and verifying encrypted connections.
How should it work?

The preferred solution would be a visibility in MON_GET_CONNECTION.

The second option would be a message in notification or db2diag log at verbosity level 3 or 4.

The least level would be a connection trace or via dump in gskit.

Idea Priority Medium
Priority Justification Ranked medium, as it becomes more and more important to have secured connections and verify the strong ciphers really get used.
Customer Name An IBM Champion for his customers
  • Attach files
  • Avatar40.8f183f721a2c86cd98fddbbe6dc46ec9
    Guest commented
    8 Sep 01:17pm

    Please refer also to case TS004142677

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