Ssl on chef server

Hi All,
we are using chef-client and knife communication to chef server via non ssl mode. and we are enforced to switch to ssl enabled mode.

currently chef server we are running is with ssl and we are able to use ssl_verify_mode: verify_peer for chef-client to connect to chef server.
however chef server still accepts the call made by client with ssl_verify_mode: verify_none.
is there any way we can prevent accepting calls with ssl_verify_mode :verify_none?