[squid-users] Peer Review of my ACL's

Tue, 24 Feb 2004 21:29:29 -0800

Now that I have my squid accelerator working, I need to tighten down my ACL's. I am allowing SSL traffic in for the reverse proxying of OWA. I am not offering any other proxying services. Any comments or suggestions on improving/securing this would be appreciated. Here are the ACL's I have that were combined with the default conf file:

#Recommended minimum configuration:
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 to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80           # http
acl Safe_ports port 21           # ftp
acl Safe_ports port 443 563      # https, snews
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

# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to unknown ports
http_access deny !Safe_ports

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

#MY ADDITIONS PER Squid The Definitive Guide - 2/23/04
acl Exchangebox dst 10.0.0.5
http_access allow Exchangebox
http_access deny all

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


# and finally allow by default
http_reply_access allow all

#Allow ICP queries from everyone
icp_access allow all

Thank you,

Eric

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