.\" (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 1.179 2003/11/24 00:16:35 dtucker Exp $
+.\" $OpenBSD: ssh.1,v 1.188 2004/05/22 16:01:05 jmc Exp $
.Dd September 25, 1999
.Dt SSH 1
.Os
Send a BREAK to the remote system
(only useful for SSH protocol version 2 and if the peer supports it).
.It Cm ~C
-Open command line (only useful for adding port forwardings using the
+Open command line.
+Currently this allows the addition of port forwardings using the
.Fl L
and
.Fl R
-options).
+options (see below).
+It also allows the cancellation of existing remote port-forwardings
+using
+.Fl KR Ar hostport .
+Basic help is available, using the
+.Fl h
+option.
.It Cm ~R
Request rekeying of the connection
(only useful for SSH protocol version 2 and if the peer supports it).
.It Compression
.It CompressionLevel
.It ConnectionAttempts
-.It ConnectionTimeout
+.It ConnectTimeout
.It DynamicForward
.It EscapeChar
.It ForwardAgent
.It HostKeyAlias
.It HostName
.It IdentityFile
-.It KeepAlive
+.It IdentitiesOnly
.It LocalForward
.It LogLevel
.It MACs
.It RemoteForward
.It RhostsRSAAuthentication
.It RSAAuthentication
+.It SendEnv
+.It ServerAliveInterval
+.It ServerAliveCountMax
.It SmartcardDevice
.It StrictHostKeyChecking
+.It TCPKeepAlive
.It UsePrivilegedPort
.It User
.It UserKnownHostsFile
This is the per-user configuration file.
The file format and configuration options are described in
.Xr ssh_config 5 .
+Because of the potential for abuse, this file must have strict permissions:
+read/write for the user, and not accessible by others.
.It Pa $HOME/.ssh/authorized_keys
Lists the public keys (RSA/DSA) that can be used for logging in as this user.
The format of this file is described in the