Squid3 Configuration

gistfile1.txt

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#
# Proof-of-concept squid proxy settings for proxying http://rubygems.org/
# Caches everything so is resilient to network outage or upstream outage.
# Works with bundler, gives a significant speed up when cache is warm (100%+)
#
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# Disable default patterns that prevent caching of query params
# refresh_pattern -i (/cgi-bin/|\?) 0  0%	0
# refresh_pattern .		0	20%	4320
 
# Cache calls to resolve dependency list for at least 15 minutes, at max a day
# TODO: What is the actual behaviour of this? Desired is refresh after 15, but
# continue to work for a day if upstream is unavailable.
refresh_pattern -i /api/v1/dependencies 900 100% 86400
 
# "Cache" redirects so that the proxy is completely isolated from the internet
# when it is warm.
url_rewrite_program /etc/squid3/rewrite.rb
 
# 1 Gb disk cache. Probably larger is better.
cache_dir ufs /var/spool/squid3 1024 16 256
 
# BELOW THIS LINE IS DEFAULT SQUID CONFIG
 
# Recommended minimum configuration:
#
 
# 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 localhost manager
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
 
#
# 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
 
# Leave coredumps in the first cache dir
coredump_dir /var/log/squid3/access.log