Access problems with squid (denied)

Hi,
I'm a newbie with squid. I installed Squid/2.2.STABLE5 compiled and
installed
it into the default places.
I configured it according to the "quickstart" adding one acl and one
http_access
to the given ones.
What's wrong with them?
Can anyone help me? Thank You very much in advance
Albrecht Frank

Here are my entries:

--------- snip -----------
#Defaults:
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 80 21 443 563 70 210 1025-65535
acl CONNECT method CONNECT

acl allowed_hosts src 172.16.1.0/255.255.255.0

# TAG: http_access
--------- snap -----------
.
.
.
--------- snip -----------
#Default configuration:
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

http_access deny manager all
http_access allow allowed_hosts
http_access deny all

# TAG: icp_access
# Reply to all ICP queries we receive
#
icp_access allow allowed_hosts
icp_access deny all

# TAG: miss_access
--------- snap -----------
Received on Wed Mar 29 2000 - 08:13:59 MST