Problem

SonicWall Inspector is receiving the following error: “no matching key exchange algorithm”

Steps to Resolution

Check your SonicWall firmware version
If you firmware is below 6.5.4.9, update your firmware to the latest available firmware for the SonicWall that you can support.

Outcome: With SonicWall on a supported firmware, and the setup completed, the Inspector should complete successfully

Further Reading: https://docs.liongard.com/docs/sonicwall-inspector