class Net::SSH::Proxy::SOCKS5

def initialize(proxy_host, proxy_port = 1080, options = {})

identify the username and password with which to authenticate.
Optionally, :user and :password options may be given to
Create a new proxy connection to the given proxy host and port. 
def initialize(proxy_host, proxy_port = 1080, options = {})
  @proxy_host = proxy_host
  @proxy_port = proxy_port
  @options = options
end