Getting wrong in configuaration set up

Hi There,

Need help urgently,I’m using openID provider https://mitreid.org/, but the problem is with port number. Unable to recognize which does it uses. Tried with port numbers that are mentioned here – https://gluu.org/docs/ce/operation/ports/ but still cannot figure it out. The error says Can not connect to the oxd server. Please check the oxd-config.json file to make sure you have entered the correct port and the oxd server is operational..Where can I find oxd-config.json file or pls let me know exactly which port number I’ve to use.