+void ssh_send_port_open(void *channel, char *hostname, int port, char *org);
+
+/* Exports from portfwd.c */
+extern char *pfd_newconnect(Socket * s, char *hostname, int port, void *c);
+extern char *pfd_addforward(char *desthost, int destport, char *srcaddr,
+ int port, void *backhandle);
+extern void pfd_close(Socket s);
+extern int pfd_send(Socket s, char *data, int len);
+extern void pfd_confirm(Socket s);
+extern void pfd_unthrottle(Socket s);
+extern void pfd_override_throttle(Socket s, int enable);
+
+/* Exports from x11fwd.c */
+extern char *x11_init(Socket *, char *, void *, void *);
+extern void x11_close(Socket);
+extern int x11_send(Socket, char *, int);
+extern void *x11_invent_auth(char *, int, char *, int);
+extern void x11_unthrottle(Socket s);
+extern void x11_override_throttle(Socket s, int enable);
+extern int x11_get_screen_number(char *display);