test PEAP

I try test PEAP following steps described in http://www.freesoftwaremagazine.com/articles/howto_incremental_setup_freerad... it says to send the following to radius server: $ cat eapol_test.conf.peap network={ eap=PEAP eapol_flags=0 key_mgmt=IEEE8021X identity="testuser" password="password" ca_cert="/home/gcheng/myCA/cacert.pem" phase2="auth=MSCHAPV2" anonymous_identity="anonymous" } When running the test, I noticed that it sends “anonymous” user to the server and the server try to authenticate user “anonymous” and failed. Any ideas what is “anonymous” here? Do we need set up password for “anonymous” on the server? Thanks Jim