acl localnet src 192.168.0.0/16 # RFC 1918 local private network (LAN)

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

#FIX: sites do not deliver intermediate certificate: certificate issuer (CA) not known
#allow fetching of missing intermediate certificates
acl intermediate_fetching transaction_initiator certificate-fetching
http_access allow intermediate_fetching

http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager

include /etc/squid/conf.d/*.conf
http_access allow localhost
http_access allow localnet
http_access deny all

# not bump
http_port 8443 tcpkeepalive=60,30,3

http_port 3128 tcpkeepalive=60,30,3 ssl-bump generate-host-certificates=on dynamic_cert_mem_cache_size=20MB tls-cert=/etc/squid/ssl/squid.pem cipher=DEFAULT:@SECLEVEL=1 options=NO_TLSv1,NO_SSLv3 tls-dh=prime256v1:/etc/squid/ssl/dhparam.pem

tls_outgoing_options min-version=1.1 cipher=DEFAULT:@SECLEVEL=1 options=NO_TLSv1,NO_SSLv3 flags=DONT_VERIFY_PEER

#allow connection even with certificate validation errors
sslproxy_cert_error allow all

acl step1 at_step SslBump1

ssl_bump peek step1
ssl_bump splice localhost
ssl_bump bump all
ssl_bump stare all

sslcrtd_program /usr/lib/squid/security_file_certgen -s /var/lib/squid/ssl_db -M 20MB
sslcrtd_children 5

coredump_dir /var/spool/squid
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