SOCKS servers can be chained together in the same manner as Proxy Servers, meaning that a SOCKS server can route through another SOCKS server.
Access the Server Manager for a server instance and click the SOCKS tab.
Click the Set SOCKS v5 Routing link.
If the downstream proxy in the proxy chain requires authentication to serve any requests, in the Server Chaining section, type the user name and password for authenticating to chained Proxy Servers. Click OK.