BDR Endpoint backup over the internet best practices

BDR Endpoint backup over the internet best practices

Hello,

I was wondering, outside of punching a hole through our firewall for the recommended ports (32004 and 42005), is there anything else we need to configure for better security when backing up endpoints over the internet?  For example, is there an option to configure a proxy?  How does backup over the internet work exactly?  

Thanks,
Christos