Question regarding eapclient

Hi I am trying to test the eapclient on Fedora. When I type this command radeapclient -x localhost 1812 testing, and started the freeradius server to accept the packets from eapclient, the eapclient window gets hanged and nothing happens. Other question that I have is that, if we have to write a EAP-MD5 client , do we need to modify the original server settings ? If yes, then what are they? Thanks in advance -- Regards Pal