squid.conf

# ----------------------------------------------------------------------------
# Basic squid configuration
# ----------------------------------------------------------------------------

# ACL configuration
# --------------------------
acl localnet src 0.0.0.1-0.255.255.255  # RFC 1122 "this" network (LAN)
acl localnet src 10.0.0.0/8             # RFC 1918 local private network (LAN)
acl localnet src 100.64.0.0/10          # RFC 6598 shared address space (CGN)
acl localnet src 169.254.0.0/16         # RFC 3927 link-local (directly plugged) machines
acl localnet src 172.16.0.0/12          # RFC 1918 local private network (LAN)
acl localnet src 192.168.0.0/16         # RFC 1918 local private network (LAN)
acl localnet src fc00::/7               # RFC 4193 local private network range
acl localnet src fe80::/10              # RFC 4291 link-local (directly plugged) machines

# Allow proxing standard web traffic only
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

# ACLs to target for logging
acl success_codes http_status 100-199 # informational
acl success_codes http_status 200-299 # successful transactions
acl success_codes http_status 300-399 # redirection
acl failure_codes http_status 400-499 # client error
acl failure_codes http_status 500-599 # server error
acl success_hier hier_code HIER_DIRECT
acl failure_hier hier_code HIER_NONE
acl failure all-of CONNECT failure_hier
acl failure all-of !CONNECT failure_codes
acl success all-of CONNECT success_hier
acl success all-of !CONNECT success_codes

# ACL operators
# -------------
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager

coredump_dir /var/spool/squid

include /etc/squid/conf.d/*