Hola compañeros!!

estoy itentando configurar un squid 3 con autentificación de usuarios, llevo varios dias y he conseguido que funcione pero me presenta un pequeño pero mayusculo problema.

El problema es que cuando configuro el proxy como transparent y activo la regla de que autentifique los usuarios, si en el navegador de cada usuario no le configuro que navegue por proxy no me pide ni usuario ni password y deniega el acceso. Esto no me sirve porque quiero que sea proxy transparente para no tener que configurar maquina por maquina y navegado rpor navegador... alguna idea???

muestro fichero squid.conf

------------------------------------------------------------------------

#
# Recommended minimum configuration:
#
auth_param basic program /usr/lib64/squid/ncsa_auth /etc/squid/passwd
auth_param basic realm autorización de navegación web
auth_param basic children 5
auth_param basic credentialsttl 1 hours
acl autorizacion proxy_auth REQUIRED

#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1
acl RedLocal src 127.0.0.0/8 #Red Clase C
acl RedLocal src 192.168.224.0/24 #Red Clase C
acl RedLocal src 10.0.0.0/8 #Red Clase A
#acl RedLocal src 172.22.0.0/16 #Red Clase B

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl localnet src fc00::/7 # RFC 4193 local private network range
acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost
http_access allow RedLocal autorizacion
http_access deny all

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128
http_port 3128 transparent
visible_hostname servidor.proxy

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320