A separate server address for SFTP in node config

Is your feature request related to a problem? Please describe. Actually for the conection of nodes i use a subdomain in cloudflare, this subdomain are in proxy, then only work with SSL in for HTTP requests, in the case of SFTP details show the same subdomain but not work in conections for the proxy.

Describe the solution you'd like A optional variable for sftp server address in any node. in cases where the node is in proxy then can set a sftp connection (like ftp.domain.com or the IP).