After updating multiple Sophos Firewalls to Version 9.403 the SSH Sensors aren't working anymore. (Sophos Change log: NUTM-3813 [Basesystem] Remove SSH weak algorithms)
The SSH Sensor shows "Failed to connect. Please check the SSH log of the target device or try the Compatibility Mode of the sensor's SSH engine ande target s consider updating thystem's operating system. Reason: ssh_connect failed"
The SSH Log on the Firewall says: "fatal: no matching mac found:..."
PRTG is up to date and also tried the Compatibility Mode.