Default password for admin:
There is no password required for admin. Just enter empty password.
Enable secure admin console (require admin to have password):
asadmin --host [host] --port [port] enable-secure-admin
postgresql-9.2-1003.jdbc3.jar
postgresql-9.2-1003.jdbc4.jar
into GlassFish_Server_rootdir/glassfish/domains/domain1/lib.