A Case for ChangoLeon

I'm installing the squid with the bridge:

to see the famous bridge using brctl can connect as client to proxy server
No need to configure network access via the server ip and port that is set in Iexplore
and Mozilla in my case is 3128, ie
You no longer have to mess with customers

but I came out.
if it runs but configuring the network and the proxy port

here is my configuration

#eth0 red Admin
#eth1 red academica
#eth2 ADSL

ifconfig eth1 promisc up
ifconfig eth2 promisc up
brctl addbr br0
brctl addif br0 eth1
brctl addif br0 eth2
ifconfig br0 netmask up
route add default gw dev br0
ebtables -t broute -A BROUTING -p IPv4 --ip-protocol 6 --ip-destination-port 80 -j redirect --redirect-target ACCEPT
iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j REDIRECT --to-ports 3128
iptables -t nat -A PREROUTING -i eth2 -p tcp --dport 80 -j REDIRECT --to-ports 3128
iptables -t nat -A PREROUTING -i br0 -p tcp --dport 80 -j REDIRECT --to-ports 3128

if it runs but I have to configure each client Iexplore and that's what they did not want

the client was transparent

here is my squid.conf
acl manager proto cache_object
acl localhost src
acl to_localhost dst
acl localnet src
acl SSL_ports port 443
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access deny all
icp_access allow localnet
icp_access deny all
htcp_access allow localnet
htcp_access deny all
http_port 3128 transparent
hierarchy_stoplist cgi-bin ?
cache_mem 256 MB
cache_dir ufs /webproxy 5000 16 256
access_log /var/log/squid/access.log squid
cache_log /var/log/squid/cache.log
cache_store_log /var/log/squid/store.log
pid_filename /var/run/squid/squid.pid
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
cache_effective_user squid
cache_effective_group squid
visible_hostname webmatrix
icp_port 3130
coredump_dir /var/log/squid

to see if I can clarify this.
I have to add the ip and port (squid) for each client that connects with bridge.

I do not want that