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openssh-portable
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- stevesk@cvs.openbsd.org 2001/08/29 23:13:10 

[ssh.1 ssh.c]
     document -D and DynamicForward; ok markus
This commit is contained in:
Ben Lindstrom 2001-09-12 17:54:24 +00:00
parent 6f672c0954
commit 19ceb17040
3 changed files with 32 additions and 3 deletions
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5
ChangeLog
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@ -49,6 +49,9 @@
- stevesk@cvs.openbsd.org 2001/08/29 23:02:21
[sshd.8]
add text about -u0 preventing DNS requests; ok markus@
- stevesk@cvs.openbsd.org 2001/08/29 23:13:10
[ssh.1 ssh.c]
document -D and DynamicForward; ok markus@
20010815
- (bal) Fixed stray code in readconf.c that went in by mistake.
@ -6372,4 +6375,4 @@
- Wrote replacements for strlcpy and mkdtemp
- Released 1.0pre1
$Id: ChangeLog,v 1.1499 2001/09/12 17:51:55 mouring Exp $
$Id: ChangeLog,v 1.1500 2001/09/12 17:54:24 mouring Exp $

27
ssh.1
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@ -34,7 +34,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $OpenBSD: ssh.1,v 1.132 2001/08/28 15:39:48 markus Exp $
.\" $OpenBSD: ssh.1,v 1.133 2001/08/29 23:13:11 stevesk Exp $
.Dd September 25, 1999
.Dt SSH 1
.Os
@ -606,6 +606,20 @@ Privileged ports can be forwarded only when
logging in as root on the remote machine.
IPv6 addresses can be specified with an alternative syntax:
.Ar port/host/hostport
.It Fl D Ar port
Specifies a local
.Dq dynamic
application-level port forwarding.
This works by allocating a socket to listen to
.Ar port
on the local side, and whenever a connection is made to this port, the
connection is forwarded over the secure channel, and the application
protocol is then used to determine where to connect to from the
remote machine. Currently the SOCKS4 protocol is supported, and
.Nm
will act as a SOCKS4 server.
Only root can forward privileged ports.
Dynamic port forwardings can also be specified in the configuration file.
.It Fl 1
Forces
.Nm
@ -773,6 +787,17 @@ back to rsh or exiting.
The argument must be an integer.
This may be useful in scripts if the connection sometimes fails.
The default is 1.
.It Cm DynamicForward
Specifies that a TCP/IP port on the local machine be forwarded
over the secure channel, and the application
protocol is then used to determine where to connect to from the
remote machine. The argument must be a port number.
Currently the SOCKS4 protocol is supported, and
.Nm
will act as a SOCKS4 server.
Multiple forwardings may be specified, and
additional forwardings can be given on the command line. Only
the superuser can forward privileged ports.
.It Cm EscapeChar
Sets the escape character (default:
.Ql ~ ) .

3
ssh.c
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@ -39,7 +39,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: ssh.c,v 1.139 2001/08/28 15:39:48 markus Exp $");
RCSID("$OpenBSD: ssh.c,v 1.140 2001/08/29 23:13:10 stevesk Exp $");
#include <openssl/evp.h>
#include <openssl/err.h>
@ -194,6 +194,7 @@ usage(void)
fprintf(stderr, " -R listen-port:host:port Forward remote port to local address\n");
fprintf(stderr, " These cause %s to listen for connections on a port, and\n", __progname);
fprintf(stderr, " forward them to the other side by connecting to host:port.\n");
fprintf(stderr, " -D port Enable dynamic application-level port forwarding.\n");
fprintf(stderr, " -C Enable compression.\n");
fprintf(stderr, " -N Do not execute a shell or command.\n");
fprintf(stderr, " -g Allow remote hosts to connect to forwarded ports.\n");