Choose Apple menu > System Preferences, then click Network.
Choose the network service you use from the list, for example, Ethernet or Wi-Fi.
Click Advanced, then click Proxies.
Configure your proxy settings manually.
Select a proxy server, such as FTP Proxy, then type the IP address and port number in the fields on the right.
Do not select the “Proxy server requires password” checkbox.
Our proxy server is not protected by a password.
Next, open a browser to ip-check.net to verify that the IP displayed is the proxy's IP address.
If so, you have successfully proxied your internet connection.