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Re: How to prevent caching of request or configure smart handling?

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## ACLs
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 20          # 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 git_ports port 9418         # git protocol
acl CONNECT method CONNECT

http_access deny !Safe_ports
http_access allow CONNECT git_ports
http_access deny CONNECT !SSL_ports
http_access allow CONNECT git_ports
http_access allow localhost manager
http_access deny manager
http_access allow localnet
http_access allow localhost
http_access deny all


## Service configuration
http_port 192.168.178.20:3128 intercept

https_port 192.168.178.20:3130 intercept ssl-bump cert=/etc/squid3/ssl_cert/myCA.pem generate-host-certificates=on dynamic_cert_mem_cache_size=4MB

acl step1 at_step SslBump1

ssl_bump peek step1
ssl_bump bump all

# sslproxy_capath /etc/ssl/certs # obsolete in 4.0.1

#sslproxy_cafile /usr/local/openssl/cabundle.file # unclear where it is in package manager installation

# insecure -> use for debugging only
sslproxy_cert_error allow all
# sslproxy_flags DONT_VERIFY_PEER # obsolete in 4.0.1


cache_dir ufs /var/squid/cache 100 16 256

coredump_dir /var/squid/cache

#refresh_pattern ^ftp:		1440	20%	10080
#refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 10080 90% 43200
refresh_pattern -i \.(iso|avi|wav|mp3|mp4|mpeg|swf|flv|x-flv)$ 432000 99% 4320000
refresh_pattern -i \.(deb|rpm|exe|zip|tar|tgz|tar\.gz|txz|tar\.xz|ram|rar|bin|ppt|doc|tiff|gz|git)$ 100800 99% 432000 store-stale
refresh_pattern -i .* 100800 99% 432000 store-stale
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
refresh_pattern .		0	20%	4320

ftp_port 192.168.178.20:3129

cache_effective_user squid
cache_effective_group squid

access_log /usr/local/squid/var/log/access.log
cache_store_log /usr/local/squid/var/log/cache_store.log
cache_log /usr/local/squid/var/log/cache.log

pid_filename /usr/local/squid/var/run/squid.pid


## Cache access
acl domain_all dstdom_regex -i .*
cache allow domain_all

# avoid caching of results from IP lookup services (unclear why they're cached
# anyway, i.e. whether squid configuration of HTTP reply is badly configured)
acl ip_services dstdomain "/etc/squid3/no-cache.acl"
cache deny ip_services

always_direct  allow ip_services


## Cache storage
maximum_object_size 20 GB
maximum_object_size_in_memory 20 MB
minimum_object_size 0 KB


## Others
range_offset_limit -1

dns_v4_first on
url_rewrite_program /usr/local/squid/lib/apt-cacher-ng_rewriter.py
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