+\c -D [listen-IP:]listen-port
+\c Dynamic SOCKS-based port forwarding
+\c -L [listen-IP:]listen-port:host:port
+\c Forward local port to remote address
+\c -R [listen-IP:]listen-port:host:port
+\c 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 -4 -6 force use of IPv4 or IPv6
+\c -C enable compression
+\c -i key private key file for authentication
+\c -s remote command is an SSH subsystem (SSH-2 only)
+\c -N don't start a shell/command (SSH-2 only)