Squid : Configure as Reverse Proxy2019/07/31

	Configure Squid as a reverse proxy server.
[1]	Get SSL Certificates to proxy HTTPS, too, refer to here.
[2]	Configure Squid.

root@prox:~#

vi /etc/squid/squid.conf

# line 1409: add (allow http access all)

http_access allow all

# line 1907: change like follows (specify backend Web server for defaultsite)

http_port 3128

http_port 80 accel defaultsite=www.srv.world
https_port 443 accel defaultsite=www.srv.world tls-cert=/etc/letsencrypt/live/prox.srv.world/fullchain.pem tls-key=/etc/letsencrypt/live/prox.srv.world/privkey.pem

# line 3239: add

cache_peer www.srv.world parent 80 0 no-query originserver

# line 3365: add (memory cache size)

cache_mem 256 MB

# line 3637: add

# number means ⇒ [disk cache size] [number of directories on top level] [number of directories on 2nd level]

cache_dir ufs /var/spool/squid 256 16 256

root@prox:~#

systemctl restart squid

[3]	Change DNS or Router's settings if need, and make it listen HTTP/HTTPS requests on Squid server. It's OK if backend http server responds like follows.

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