Manipulate multiple proxies with Squid

A rough explanation of the environment

trouble

--Since smartphones cannot connect well with a proxy with authentication, they are always connected to a proxy built on Azure, so additional Azure communication charges will be incurred. --Some sites cannot be seen by authenticated Proxy: Youtube and other daily necessities

To solve

A Proxy was built locally using Squid, and the Proxy server destination to be connected as a proxy can be selected according to the time zone and the access destination site.

Example of environment with authenticated Proxy at 192.168.1.1:8080 and external Proxy at 0.0.0.0:8888 Excerpt of important settings

/etc/squid/squid.conf


(Omission)
cache_peer 192.168.1.1 parent 8080 0 no-query no-netdb-exchange no-digest login=User name:Password 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"

(Omission)

#Connect directly to the local environment without going through a higher-level proxy
acl developersegments1 dst 192.168.1.1/24
always_direct allow developersegments1

never_direct allow all

#Do not cache
cache deny all

# 1:00 to 6:192 when accessing a site listed on the blacklist at 00.168.1.Proxy connection to 1**Don't let me**
cache_peer_access 192.168.1.1 deny blacklist sorting

blacklist


.qiita.com
.youtube.com

.[domain]Can target the entire domain with

If you connect to the port set with this, it will be preferentially connected to 192.168.1.1 without ** authentication **, and if you try to access the site set to blacklist from 1:00 to 6:00, it will be 0.0.0.0. Connected to proxy.

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