Use SafeSquid in front of the corporate proxy. A simple configuration in SafeSquid server, will forward all client requests to the forward proxy i.e. Parent Proxy.
Example scenarios:
Here am using two proxy servers as SafeSquid only
My client (Browser)'s network IP - 192.168.0.27
My Child Proxy's network IP - 192.168.27.50 (with no direct internet Access)
My Parent Proxy's network IP - 192.168.27.100
Configuration on child proxy:
1.Deploy SafeSquid proxy
2.Enabling SSL inspection in SafeSquid
3.Downloading ROOT CA certificate from SafeSquid
4.Deploy certificate in client browsers.
5.Enable forwarding to parent proxy using forwarding section
Configuration on Parent proxy:
Deploy SafeSquid, it is up and running, no extra configuration required in parent proxy
Prerequisites
Enable HTTPS inspection on child proxy (if you want,on Parent proxy also). Check our document to configure HTTPS inspection on SafeSquid - How to configure HTTPS inspection
Import SafeSquid child proxy ROOT CA in client browser
Note: No configuration required on Parent Proxy server. Just deploy the parent proxy and make sure that it is up and running.
Go to Application Setup
Go to Proxy chain
Enable Global section
Go to Forwarding proxies
Add an entry
In the example: my upstream proxy ip: 192.168.27.100
In example: my upstream proxy listening on port 8080
Testing
Save configuration
When you click on Save config, it will give a prompt for asking the confirmation to store your configuration into the cloud.
Select Yes only in below cases:
if you want to use this same configuration in other SafeSquid instances.
if your total configuration in all sections is completed and validated.
Otherwise select No and click on submit.