Install squid3 by entering the following commands in the terminal:
sudo apt update sudo apt install squid3
Description:
Transitional package
Squid is a high-performance proxy caching server for web clients, supporting FTP, gopher, ICY and HTTP data objects. . This is a transitional package used to migrate from squid3 to squid.
Homepage: http://www.squid-cache.org
Version: 3.5.27-1ubuntu1
Section: web