Transparent squid setup with custom ads blocking.

squid.conf

#
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
acl custom_ads  dstdom_regex "/etc/squid/ads.acl"
acl ads dstdom_regex "/etc/squid/ad_block.txt"


http_access deny custom_ads
http_access deny ads
deny_info TCP_RESET ads

http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
#http_access allow localhost manager
#http_access allow localhost
#http_access deny all
http_access allow all
icp_access allow all

cache_mem 512 MB
maximum_object_size_in_memory 128 KB

access_log /var/log/squid/access.log squid

http_port 3128

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 (Release|Packages(.gz)*)$      0       20%     2880
refresh_pattern .               0       20%     4320


cache_replacement_policy heap GDSF
cache_dir ufs /var/spool/squid 15360 16 256
maximum_object_size 4 MB
cache_swap_low 85
cache_swap_high 90

#Squid can not tell the difference between a half-closed and a fully-closed TCP connection. Therefore sends a connection-close to clients that leave a half open connection:
half_closed_clients off

memory_pools off

via off
forwarded_for off
follow_x_forwarded_for deny all
request_header_access X-Forwarded-For deny all
header_access X_Forwarded_For deny all

#https://calomel.org/squid_adservers.html

hi, can share your /etc/squid/ads.acl and /etc/squid/ad_block.txt ？

Hi, sorry it's not in production anymore (and have not been for a long time) :/