+\c -L listen-port:host:port Forward local port to remote address
+\c -R listen-port:host:port Forward remote port to local address
+\c -X -x enable / disable X11 forwarding
+\c -A -a enable / disable agent forwarding
+\c -t -T enable / disable pty allocation
+\c -1 -2 force use of particular protocol version
+\c -C enable compression
+\c -i key private key file for authentication