Use external auth like radius or ldap for WebUI login

Is there any way , i can change the auth method used for WebUI login of OpenWRT.
I want the authenicate the WebUI username, and password via external auth server like Radius, LDAP or TACACS+.

Probably, if you switch httpd.

Okay, could you tell me more about this. You mean othe other available web servers...
Currently, WebUI is using /etc/config/rpcd for login.