Proxy

/etc/squid/squid.conf

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
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 Safe_ports port 901 # SWAT
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
http_access allow localhost
http_access deny all
http_reply_access allow all
icp_access allow all
http_port 3128
cache_peer 172.24.228.3 sibling 3128 3130
cache_peer 145.228.130.12 sibling 3128 3130
cache_peer 172.24.228.44 sibling 3128 3130
hierarchy_stoplist cgi-bin
acl QUERY urlpath_regex cgi-bin
cache deny QUERY
cache_mem 256 MB
maximum_object_size_in_memory 512 KB
cache_dir diskd /var/cache/squid 4000 16 256 Q1=72 Q2=64
maximum_object_size 72500 KB
access_log /var/log/squid/access.log squid
buffered_logs on
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern .               0       20%     4320
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
announce_period 1 day
coredump_dir /var/cache/squid
pipeline_prefetch on

Hilfreich ist die Konfiguration per Webmin