cnMaestro on Prem behind Proxy

With our current setup we have our on Prem server residing behind a Proxy server that allows it to connected to the Internet.  I would like to choose setup #2 where the cnMaestro instance provides the proxy connection for all AP and SM to communciate with Cambium Cloud SAS services.  Is there a setting in the config (ubuntu) that will allow me to imput the Proxy connection into the cnMaestro server so that it will be the only device on our network that needs the ability to hit the internet?