# Structs
Config a Tunnel.
Proxy is the inbound portion of a Tunnel.
Tunnel represents an SSH tunnel with proxy capabilities.Both chisel client and server are Tunnels.chisel client has a single set of remotes, whereaschisel server has multiple sets of remotes (one set per client).Each remote has a 1:1 mapping to a proxy.Proxies listen, send data over ssh, and the other end of the ssh connectioncommunicates with the endpoint and returns the response.