Password protected website area with Apache digest authentication
Digest authentication is more secure than Basic authentication, because using digest authentication, your password is never sent across the network in the clear, but is always transmitted as an MD5 digest of the user’s password. In this way, the password cannot be determined by sniffing network traffic.
Resources:
Debian 5 Lenny
Apache 2.2.9
Enable mod_auth_digest and disable mod_auth_basic
Apache module [...]