http://www.tcpipguide.com/free/t_HTTPTransitoryandPersistentConnectionsandPipelinin.htm https://bobcares.com/blog/edit-docker-image/ https://vsupalov.com/docker-env-vars/ https://httpd.apache.org/docs/2.4/vhosts/examples.html http://httpd.apache.org/docs/current/howto/auth.html https://www.digitalocean.com/community/tutorials/how-to-set-up-password-authentication-with-apache-on-ubuntu-14-04 https://www.cyberciti.biz/tips/linux-unix-squid-proxy-server-authentication.html

Squid: The Definitive Guide 1a edició ISBN: 0-596-00162-2 Duane Wessels O’Reilly Media, Inc.

https://www.helpsystems.com/resources/articles/snmp-basics-what-it-and-how-it-works http://www.squid-cache.org/Doc/config/cache_dir/

http://etutorials.org/Server+Administration/Squid.+The+definitive+guide/Chapter+7.+Disk+Cache+Basics/7.1+The+cache_dir+Directive/

http://artemisa.unicauca.edu.co/~dabravo/squid24s1/contents.htm https://www.josedomingo.org/pledin/2013/02/gestionando-la-cache-de-squid-parte-2/