Squid installation (over Debian Squeeze) with simple user:password auth

$ aptitude install squid apache2-utils


/etc/squid/squid.conf

auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/passwd
auth_param basic children 5
auth_param basic realm User and Password                   
auth_param basic credentialsttl 2 hours
acl passwd proxy_auth REQUIRED 
 
http_access allow passwd
http_access deny all 

$ htpasswd -d /etc/squid/passwd user