## Curl
curl --proxy http://<RemoteIP>:3128 http://<RemoteIP>
curl --proxy http://<USERNAME>:'<PASSWORD>'@<RemoteIP>:3128 http://<RemoteIP>
## The proxychains file.
sudo vi /etc/proxychains4.conf
## add http <RemoteIP> 3128
proxychains nmap -sT -n -p- 127.0.0.1