WEB-INF and classes directories are readables in my linux

[Landaluze Produktions IS - Carlos]

i have make virtual domains in my linux, but in each virtual domain i can
see (with the browser) the WEB-INF and the WEB-INF/classes directory and
theris files.
How can i make no readable (no read) these directories?
thaks and excuse my english

Via broser (ns o ie) puedo tener acceso a los directorios /webinf y
/WEB_INF/classes de mis dominios viruales.
Como puedo eviatar que estos directorios se peudan ver?
gracias Carlos