# -------------------------------------------------------------------------------------------------------------------- #
# GENERAL OPTIONS
# -------------------------------------------------------------------------------------------------------------------- #

coredump_dir /var/spool/squid
http_port 3128

# -------------------------------------------------------------------------------------------------------------------- #
# OPTIONS FOR AUTHENTICATION
# -------------------------------------------------------------------------------------------------------------------- #

auth_param basic program /usr/lib/squid/basic_ncsa_auth /etc/squid/users.conf
auth_param basic children 10
auth_param basic realm Proxy Server
auth_param basic credentialsttl 24 hours

# -------------------------------------------------------------------------------------------------------------------- #
# ACCESS CONTROLS
# -------------------------------------------------------------------------------------------------------------------- #

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.

# acl clients src 185.60.216.35         # Allowed client IP.
# acl clients src 172.217.12.174        # Allowed client IP.
# acl clients src 104.244.42.129        # Allowed client IP.

acl SSL_ports port 443
acl Safe_ports port 80
acl Safe_ports port 21
acl Safe_ports port 443

acl Safe_methods method GET POST OPTIONS CONNECT
acl users proxy_auth REQUIRED

# Access permission configuration.
http_access deny !Safe_ports
http_access allow localnet
http_access allow localhost
http_access allow clients
http_access allow users

# Deny all other access to proxy.
http_access deny all

# -------------------------------------------------------------------------------------------------------------------- #
# OPTIONS FOR TUNING THE CACHE
# -------------------------------------------------------------------------------------------------------------------- #

refresh_pattern ^ftp:             1440  20%   10080
refresh_pattern ^gopher:          1440  0%    1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%    0
refresh_pattern .                 0     20%   4320

# -------------------------------------------------------------------------------------------------------------------- #
# SECURITY
# -------------------------------------------------------------------------------------------------------------------- #

httpd_suppress_version_string on
via off
forwarded_for delete
follow_x_forwarded_for deny all

reply_header_access X-Cache deny all
reply_header_access X-Cache-Lookup deny all
reply_header_access Server deny all

request_header_access Allow allow all
request_header_access Authorization allow all
request_header_access WWW-Authenticate allow all
request_header_access Proxy-Authorization allow all
request_header_access Proxy-Authenticate allow all
request_header_access Cache-Control allow all
request_header_access Content-Encoding allow all
request_header_access Content-Length allow all
request_header_access Content-Type allow all
request_header_access Date allow all
request_header_access Expires allow all
request_header_access Host allow all
request_header_access If-Modified-Since allow all
request_header_access Last-Modified allow all
request_header_access Location allow all
request_header_access Pragma allow all
request_header_access Accept allow all
request_header_access Accept-Charset allow all
request_header_access Accept-Encoding allow all
request_header_access Accept-Language allow all
request_header_access Content-Language allow all
request_header_access Mime-Version allow all
request_header_access Retry-After allow all
request_header_access Title allow all
request_header_access Connection allow all
request_header_access Proxy-Connection allow all
request_header_access User-Agent allow all
request_header_access All deny all