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authorTheo de Raadt <deraadt@cvs.openbsd.org>1999-09-30 08:52:35 +0000
committerTheo de Raadt <deraadt@cvs.openbsd.org>1999-09-30 08:52:35 +0000
commit5756ea2552cc9ebe1d0757f4186a4ead8cab439c (patch)
treeb32571fb18e2f02e298996ba1c07a3e07af284c0 /usr.bin/ssh/ssh.1
parent8a5ad7ae8eb37f6092b601f9b502e0df0024ac89 (diff)
initial tweaking
Diffstat (limited to 'usr.bin/ssh/ssh.1')
-rw-r--r--usr.bin/ssh/ssh.165
1 files changed, 30 insertions, 35 deletions
diff --git a/usr.bin/ssh/ssh.1 b/usr.bin/ssh/ssh.1
index 37b972ddfcd..9ae47e9fbfa 100644
--- a/usr.bin/ssh/ssh.1
+++ b/usr.bin/ssh/ssh.1
@@ -9,7 +9,7 @@
.\"
.\" Created: Sat Apr 22 21:55:14 1995 ylo
.\"
-.\" $Id: ssh.1,v 1.4 1999/09/29 18:16:20 dugsong Exp $
+.\" $Id: ssh.1,v 1.5 1999/09/30 08:52:34 deraadt Exp $
.\"
.Dd September 25, 1999
.Dt SSH 1
@@ -20,12 +20,12 @@
.Sh SYNOPSIS
.Nm ssh
.Op Fl l Ar login_name
-.Ar hostname
+.Op Ar hostname | user@hostname
.Op Ar command
.Pp
.Nm ssh
.Op Fl agknqtvxXC
-.Op Fl c Ar blowfish|idea|des|3des|none
+.Op Fl c Ar blowfish|3des|none
.Op Fl e Ar escape_char
.Op Fl i Ar identity_file
.Op Fl l Ar login_name
@@ -33,12 +33,12 @@
.Op Fl p Ar port
.Op Fl L Ar port:host:hostport
.Op Fl R Ar port:host:hostport
-.Ar hostname
+.Op Ar hostname | user@hostname
.Op Ar command
.Sh DESCRIPTION
.Nm
-(Secure Shell) a program for logging into a remote machine and for
-executing commands in a remote machine. It is intended to replace
+(Secure Shell) is a program for logging into a remote machine and for
+executing commands on a remote machine. It is intended to replace
rlogin and rsh, and provide secure encrypted communications between
two untrusted hosts over an insecure network. X11 connections and
arbitrary TCP/IP ports can also be forwarded over the secure channel.
@@ -253,16 +253,18 @@ host key is not known or has changed.
.It Fl a
Disables forwarding of the authentication agent connection. This may
also be specified on a per-host basis in the configuration file.
-.It Fl c Ar blowfish|idea|des|3des|none
+.It Fl c Ar blowfish|3des|none
Selects the cipher to use for encrypting the session.
.Ar 3des
is used by default. It is believed to be secure.
-.Ar des
-is the data encryption standard, but is breakable by
-governments, large corporations, and major criminal organizations.
.Ar 3des
-(triple-des) is encrypt-decrypt-encrypt triple with three different keys.
-It is presumably more secure than DES.
+(triple-des) is an encrypt-decrypt-encrypt triple with three different keys.
+It is presumably more secure than the
+.Ar des
+cipher which is no longer supported in ssh.
+.Ar blowfish
+is a fast block cipher, it appears very secure and is much faster than
+.Ar 3des .
.Ar none
disables encryption entirely; it is only intended for debugging, and
it renders the connection insecure.
@@ -451,8 +453,6 @@ or
.It Cm Cipher
Specifies the cipher to use for encrypting the session. Currently,
.Dq blowfish ,
-.Dq idea ,
-.Dq des ,
.Dq 3des ,
and
.Dq none
@@ -893,32 +893,26 @@ started.
See the
.Xr sshd 8
manual page for more information.
-.Sh INSTALLATION
-.Nm
-is normally installed as suid root. It needs root privileges only for
-rhosts authentication (rhosts authentication requires that the
-connection must come from a privileged port, and allocating such a
-port requires root privileges). It also needs to be able to read
-.Pa /etc/ssh_host_key
-to perform RSA
-host authentication. It is possible to use
-.Nm
-without root privileges, but rhosts authentication will then be
-disabled.
-.Nm
-drops any extra privileges immediately after the connection to the
-remote host has been made.
-.Pp
-Considerable work has been put into making
-.Xr sshd 8
-secure. However, if you find a security problem, please report it
-immediately to <ssh-bugs@cs.hut.fi>.
+.It Pa libcrypto.so.X.1
+A version of this library which includes support for the RSA algorithm
+is required for proper operation.
.Sh AUTHOR
Tatu Ylonen <ylo@cs.hut.fi>
.Pp
Issues can be found from the SSH WWW home page:
.Pp
.Dl http://www.cs.hut.fi/ssh
+.Pp
+This version of
+.Nm
+is a derivative of the original 1.2.16 release, but with bugs removed and
+newer features re-added. Rapidly after 1.2.16 release newer versions bore
+successively more restrictive licenses. In this version, all components
+of a restrictive nature (ie. patents) have been directly removed from the
+source code; any licensed or patented components are chosen from external
+libraries. The libraries described in
+.Xr ssl 8
+are required for proper operation.
.Sh SEE ALSO
.Xr make-ssh-known-hosts 1 ,
.Xr rlogin 1 ,
@@ -928,4 +922,5 @@ Issues can be found from the SSH WWW home page:
.Xr ssh-agent 1 ,
.Xr ssh-keygen 1 ,
.Xr telnet 1 ,
-.Xr sshd 8
+.Xr sshd 8 ,
+.Xr ssl 8