You get this message because the hostname of the certificate does not match the hostname configured in the connection profile in Remmina.
To avoid the certificate validation message you can put the fingerprint of the server-certificate in ~/.freerdp/known_hosts.
Neither of these options will prompt you ever :)
You get this message because the hostname of the certificate does not match the hostname configured in the connection profile in Remmina. To avoid the certificate validation message you can put the fingerprint of the server-certificate in ~/.freerdp/known_hosts.
Example:
hostname zb:45:r9:cu8:34:28:z8:69:45:32:19:02:zc:31:4f:b4:p5:34:76