Proxychains forces any application to route its traffic through configured proxies, without modifying each program individually.
apt install proxychains
cp /etc/proxychains.conf /etc/proxychains.conf.backup
The default proxy in the config file is Tor (socks4 127.0.0.1 9050).
service tor start
service tor status
proxychains firefox https://www.cual-es-mi-ip.net/
Get proxies at: hidemy.name/es/proxy-list/
Edit /etc/proxychains.conf β [ProxyList] section:
# Comment out Tor:
# socks4 127.0.0.1 9050
# Add your proxy:
socks5 PROXY_IP PORT
service tor stop
proxychains firefox https://www.cual-es-mi-ip.net/