Configuração Squid

[cato]

Bom dia,

Editei o arquivo de configuração em /etc/squid3/squid.conf , com as seguintes linhas:

# /etc/squid3/squid.conf

http_port 3128
visible_hostname debian

cache_mem 64 MB
maximum_object_size_in_memory 64 KB
maximum_object_size 512 MB
minimum_object_size 0 KB
cache_swap_low 90
cache_swap_high 95
cache_dir ufs /var/spool/squid3 2048 16 256
cache_access_log /var/log/squid3/access.log
refresh_pattern ^ftp: 15 20% 2280
refresh_pattern ^gopher: 15 0% 2280
refresh_pattern . 15 20% 2280

acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl SSL_ports port 443 563
acl Safe_ports port 21 80 443 563 70 210 280 488 59 777 901 1025-65535
acl purge method PURGE
acl CONNECT method CONNECT

http_access allow all
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

# acl redelocal src 192.168.1.0/24
acl redelocal src 192.168.136.0/24
http_access allow localhost
http_access allow redelocal

http_access deny all

...Estou usando o VMware Workstation com essa maquina, as configurações do arquivo /etc/network/interfaces é:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
#allow-hotplug eth0
#iface eth0 inet dhcp
auto eth0
iface eth0 inet static
address 192.168.136.3
netmast 255.255.255.0
broadcast 192.168.136.255
gateway 192.168.136.2
dns-namservers 208.67.222.222

[email protected]:/$ sudo /etc/init.d/squid3 restart
[ ok ] Restarting squid3 (via systemctl): squid3.service.
[email protected]:/$

... Configurando o navegador para acessar o localhost na porta 3128, é mostrada a mensagem:

The proxy server is refusing connections

Firefox is configured to use a proxy server that is refusing connections.

Check the proxy settings to make sure that they are correct.
Contact your network administrator to make sure the proxy server is working.

... o arquivo de configuração /etc/squid3/squid.conf esta incorreto? Por favor, estou começando agora e não imagino o que esta errado!

Desde ja agradeço a ajuda.