- (dtucker) [defines.h] Remove now-undeeded PRIu64 define.

[openssh.git] / ssh-keyscan.1

diff --git a/ssh-keyscan.1 b/ssh-keyscan.1
index f6596c4813148a35ba771c604b41f57731944816..d9f7bedc6609977e61ea745b95e978c0cee8c062 100644 (file)
--- a/ssh-keyscan.1
+++ b/ssh-keyscan.1
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: ssh-keyscan.1,v 1.15 2003/03/28 10:11:43 jmc Exp $
+.\"    $OpenBSD: ssh-keyscan.1,v 1.27 2009/10/28 16:38:18 reyk Exp $

 .\"
 .\" Copyright 1995, 1996 by David Mazieres <dm@lcs.mit.edu>.
 .\"
 .\"
 .\" Copyright 1995, 1996 by David Mazieres <dm@lcs.mit.edu>.
 .\"


@@ -6,7 +6,7 @@
 .\" permitted provided that due credit is given to the author and the
 .\" OpenBSD project by leaving this copyright notice intact.
 .\"
 .\" permitted provided that due credit is given to the author and the
 .\" OpenBSD project by leaving this copyright notice intact.
 .\"

-.Dd January 1, 1996
+.Dd $Mdocdate$

 .Dt SSH-KEYSCAN 1
 .Os
 .Sh NAME
 .Dt SSH-KEYSCAN 1
 .Os
 .Sh NAME


@@ -15,13 +15,14 @@
 .Sh SYNOPSIS
 .Nm ssh-keyscan
 .Bk -words
 .Sh SYNOPSIS
 .Nm ssh-keyscan
 .Bk -words

-.Op Fl v46
+.Op Fl 46Hv
+.Op Fl f Ar file

 .Op Fl p Ar port
 .Op Fl T Ar timeout
 .Op Fl t Ar type
 .Op Fl p Ar port
 .Op Fl T Ar timeout
 .Op Fl t Ar type

-.Op Fl f Ar file
+.Op Fl V Ar rdomain

 .Op Ar host | addrlist namelist
 .Op Ar host | addrlist namelist

-.Op Ar ...
+.Ar ...

 .Ek
 .Sh DESCRIPTION
 .Nm
 .Ek
 .Sh DESCRIPTION
 .Nm


@@ -46,6 +47,33 @@ scanning process involve any encryption.
 .Pp
 The options are as follows:
 .Bl -tag -width Ds
 .Pp
 The options are as follows:
 .Bl -tag -width Ds

+.It Fl 4
+Forces
+.Nm
+to use IPv4 addresses only.
+.It Fl 6
+Forces
+.Nm
+to use IPv6 addresses only.
+.It Fl f Ar file
+Read hosts or
+.Pa addrlist namelist
+pairs from this file, one per line.
+If
+.Pa -
+is supplied instead of a filename,
+.Nm
+will read hosts or
+.Pa addrlist namelist
+pairs from the standard input.
+.It Fl H
+Hash all hostnames and addresses in the output.
+Hashed names may be used normally by
+.Nm ssh
+and
+.Nm sshd ,
+but they do not reveal identifying information should the file's contents
+be disclosed.

 .It Fl p Ar port
 Port to connect to on the remote host.
 .It Fl T Ar timeout
 .It Fl p Ar port
 Port to connect to on the remote host.
 .It Fl T Ar timeout


@@ -67,60 +95,25 @@ or
 for protocol version 2.
 Multiple values may be specified by separating them with commas.
 The default is
 for protocol version 2.
 Multiple values may be specified by separating them with commas.
 The default is

-.Dq rsa1 .
-.It Fl f Ar filename
-Read hosts or
-.Pa addrlist namelist
-pairs from this file, one per line.
-If
-.Pa -
-is supplied instead of a filename,
-.Nm
-will read hosts or
-.Pa addrlist namelist
-pairs from the standard input.
+.Dq rsa .
+.It Fl V Ar rdomain
+Set the routing domain.

 .It Fl v
 Verbose mode.
 Causes
 .Nm
 to print debugging messages about its progress.
 .It Fl v
 Verbose mode.
 Causes
 .Nm
 to print debugging messages about its progress.

-.It Fl 4
-Forces
-.Nm
-to use IPv4 addresses only.
-.It Fl 6
-Forces
-.Nm
-to use IPv6 addresses only.

 .El
 .Sh SECURITY
 .El
 .Sh SECURITY

-If a ssh_known_hosts file is constructed using
+If an ssh_known_hosts file is constructed using

 .Nm
 without verifying the keys, users will be vulnerable to
 .Nm
 without verifying the keys, users will be vulnerable to

-.I man in the middle
+.Em man in the middle

 attacks.
 On the other hand, if the security model allows such a risk,
 .Nm
 can help in the detection of tampered keyfiles or man in the middle
 attacks which have begun after the ssh_known_hosts file was created.
 attacks.
 On the other hand, if the security model allows such a risk,
 .Nm
 can help in the detection of tampered keyfiles or man in the middle
 attacks which have begun after the ssh_known_hosts file was created.

-.Sh EXAMPLES
-.Pp
-Print the
-.Pa rsa1
-host key for machine
-.Pa hostname :
-.Bd -literal
-$ ssh-keyscan hostname
-.Ed
-.Pp
-Find all hosts from the file
-.Pa ssh_hosts
-which have new or different keys from those in the sorted file
-.Pa ssh_known_hosts :
-.Bd -literal
-$ ssh-keyscan -t rsa,dsa -f ssh_hosts | \e\ 
-       sort -u - ssh_known_hosts | diff ssh_known_hosts -
-.Ed

 .Sh FILES
 .Pa Input format:
 .Bd -literal
 .Sh FILES
 .Pa Input format:
 .Bd -literal


@@ -142,19 +135,37 @@ Where
 is either
 .Dq ssh-rsa
 or
 is either
 .Dq ssh-rsa
 or

-.Dq ssh-dsa .
+.Dq ssh-dss .

 .Pp
 .Pa /etc/ssh/ssh_known_hosts
 .Pp
 .Pa /etc/ssh/ssh_known_hosts

-.Sh BUGS
-It generates "Connection closed by remote host" messages on the consoles
-of all the machines it scans if the server is older than version 2.9.
-This is because it opens a connection to the ssh port, reads the public
-key, and drops the connection as soon as it gets the key.
+.Sh EXAMPLES
+Print the
+.Pa rsa
+host key for machine
+.Pa hostname :
+.Bd -literal
+$ ssh-keyscan hostname
+.Ed
+.Pp
+Find all hosts from the file
+.Pa ssh_hosts
+which have new or different keys from those in the sorted file
+.Pa ssh_known_hosts :
+.Bd -literal
+$ ssh-keyscan -t rsa,dsa -f ssh_hosts | \e
+       sort -u - ssh_known_hosts | diff ssh_known_hosts -
+.Ed

 .Sh SEE ALSO
 .Xr ssh 1 ,
 .Xr sshd 8
 .Sh AUTHORS
 .Sh SEE ALSO
 .Xr ssh 1 ,
 .Xr sshd 8
 .Sh AUTHORS

-David Mazieres <dm@lcs.mit.edu>
+.An -nosplit
+.An David Mazieres Aq dm@lcs.mit.edu

 wrote the initial version, and
 wrote the initial version, and

-Wayne Davison <wayned@users.sourceforge.net>
+.An Wayne Davison Aq wayned@users.sourceforge.net

 added support for protocol version 2.
 added support for protocol version 2.

+.Sh BUGS
+It generates "Connection closed by remote host" messages on the consoles
+of all the machines it scans if the server is older than version 2.9.
+This is because it opens a connection to the ssh port, reads the public
+key, and drops the connection as soon as it gets the key.