To check if your proxy is connected following the following steps.
Step 1: Obtain Current IP Address
To obtain your current IP address, visit https://ipinfo.io and write down the IP for reference.
Step 2: Configure Proxy In Browser
For this example we will use FireFox as they have native support for Proxies.
Open Network Settings
Select Manual Proxy Configuration
Enter Hostname And Port Number
Select Also Use This Proxy For FTP and HTTPS
Open New Tab And Enter Credentials
Step 3: Obtain New IP Address
To obtain your new IP address, visit https://ipinfo.io and compare this IP address to the one form Step 1.