This post Squid proxy - a short guide (forward & transparent proxy examples, SSL bumping, links to guides) -Reddit After setting transparent proxy with Squid referring to the above, it worked without adding the self-signed root certificate.
PC: ThinkPad T490 Arch Linux Proxy with authentication Required environment Bringing HTTP Proxy built on Azure with SSH port forwarding Wi-Fi is skipped with create_ap, and smartphones use Drony to enable applications that do not support HTTP Proxy to communicate via Proxy.
From Manipulating Multiple Proxy with Squid -Qiita
Squid configuration file with proxy.server.jp: 8080 (provisional) and 0.0.0.0:8888 as parents:
/etc/squid/squid.conf
#
# Recommended minimum configuration:
#
# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
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 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
#
# Recommended minimum Access Permission configuration:
#
# Deny requests to certain unsafe ports
http_access deny !Safe_ports
# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports
# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager
on_unsupported_protocol tunnel all
# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#
cache_peer proxy.server.jp parent 8080 0 no-query no-netdb-exchange no-digest login=USER:PASS
proxy-only
cache_peer 0.0.0.0 parent 8888 0 no-query no-netdb-exchange no-digest default
acl sorting time SMTWHF 1:00-6:00
acl blacklist dstdomain "/usr/local/etc/squid/blacklist"
acl blog url_regex blog
acl blacklist_day dstdomain "/usr/local/etc/squid/blacklist_day"
acl status http_status !200
http_port 7080 intercept
https_port 7443 intercept ssl-bump \
generate-host-certificates=on \
dynamic_cert_mem_cache_size=4MB \
cert=/etc/squid/cert/myCA.pem \
key=/etc/squid/cert/myCA.pem
acl step1 at_step SslBump1
acl step2 at_step SslBump2
acl step3 at_step SslBump3
#ssl_bump peek step1 # <- enabling this breaks it
ssl_bump stare step2
ssl_bump bump step3
# Uncommenting this may also break bumping.
#ssl_bump bump all
# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost
http_access allow all
# And finally deny all other access to this proxy
http_access deny all
# Squid normally listens to port 3128
http_port 3354
icp_port 0
# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/cache/squid 100 16 256
# Leave coredumps in the first cache dir
coredump_dir /var/cache/squid
#
# Add any of your own refresh_pattern entries above these.
#
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
#Set if there is a sub Proxy
#Direct access to local network segments without going through the parent proxy
acl developersegments1 dst 192.168.0.0/24
always_direct allow developersegments1
never_direct allow all
#Do not cache
cache deny all
#cache_peer_access proxy.server.jp deny sorting
cache_peer_access proxy.server.jp deny blacklist sorting
cache_peer_access proxy.server.jp deny blog sorting
cache_peer_access proxy.server.jp deny blacklist_day
cache_peer_access proxy.server.jp deny status
Settings added with iptables A terminal (smartphone) is connected to ap0
iptables -t nat -A PREROUTING -i ap0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 7080
iptables -t nat -A PREROUTING -i ap0 -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 7443
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