- jmc@cvs.openbsd.org 2003/10/08 08:27:36
[scp.1 scp.c sftp-server.8 sftp.1 sftp.c ssh.1 sshd.8]
scp and sftp: add options list and sort options. options list requested
by deraadt@
sshd: use same format as ssh
ssh: remove wrong option from list
sftp-server: Subsystem is documented in ssh_config(5), not sshd(8)
ok deraadt@ markus@
This commit is contained in:
Darren Tucker
parent
439ce0daf9
commit
1f20394e92
13
ChangeLog
13
ChangeLog
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@ -1,3 +1,14 @@
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20031015
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- (dtucker) OpenBSD CVS Sync
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- jmc@cvs.openbsd.org 2003/10/08 08:27:36
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[scp.1 scp.c sftp-server.8 sftp.1 sftp.c ssh.1 sshd.8]
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scp and sftp: add options list and sort options. options list requested
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by deraadt@
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sshd: use same format as ssh
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ssh: remove wrong option from list
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sftp-server: Subsystem is documented in ssh_config(5), not sshd(8)
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ok deraadt@ markus@
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20031009
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- (dtucker) [sshd_config.5] UsePAM defaults to "no". ok djm@
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@ -1314,4 +1325,4 @@
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- Fix sshd BindAddress and -b options for systems using fake-getaddrinfo.
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Report from murple@murple.net, diagnosis from dtucker@zip.com.au
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$Id: ChangeLog,v 1.3069 2003/10/09 04:13:53 dtucker Exp $
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$Id: ChangeLog,v 1.3070 2003/10/15 05:50:42 dtucker Exp $
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200
scp.1
200
scp.1
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@ -9,7 +9,7 @@
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.\"
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.\" Created: Sun May 7 00:14:37 1995 ylo
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.\"
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.\" $OpenBSD: scp.1,v 1.28 2003/06/10 09:12:11 jmc Exp $
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.\" $OpenBSD: scp.1,v 1.29 2003/10/08 08:27:36 jmc Exp $
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.\"
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.Dd September 25, 1999
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.Dt SCP 1
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@ -20,24 +20,24 @@
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.Sh SYNOPSIS
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.Nm scp
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.Bk -words
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.Op Fl pqrvBC1246
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.Op Fl F Ar ssh_config
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.Op Fl S Ar program
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.Op Fl P Ar port
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.Op Fl 1246BCpqrv
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.Op Fl c Ar cipher
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.Op Fl F Ar ssh_config
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.Op Fl i Ar identity_file
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.Op Fl l Ar limit
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.Op Fl o Ar ssh_option
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.Op Fl P Ar port
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.Op Fl S Ar program
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.Sm off
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.Oo
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.Op Ar user@
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.Op Ar user No @
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.Ar host1 No :
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.Oc Ns Ar file1
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.Sm on
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.Op Ar ...
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.Sm off
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.Oo
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.Op Ar user@
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.Op Ar user No @
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.Ar host2 No :
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.Oc Ar file2
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.Sm on
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@ -62,72 +62,6 @@ Copies between two remote hosts are permitted.
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl c Ar cipher
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Selects the cipher to use for encrypting the data transfer.
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl i Ar identity_file
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Selects the file from which the identity (private key) for RSA
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authentication is read.
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl l Ar limit
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Limits the used bandwidth, specified in Kbit/s.
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.It Fl p
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Preserves modification times, access times, and modes from the
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original file.
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.It Fl r
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Recursively copy entire directories.
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.It Fl v
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Verbose mode.
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Causes
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.Nm
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and
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.Xr ssh 1
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to print debugging messages about their progress.
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This is helpful in
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debugging connection, authentication, and configuration problems.
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.It Fl B
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Selects batch mode (prevents asking for passwords or passphrases).
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.It Fl q
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Disables the progress meter.
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.It Fl C
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Compression enable.
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Passes the
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.Fl C
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flag to
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.Xr ssh 1
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to enable compression.
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.It Fl F Ar ssh_config
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Specifies an alternative
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per-user configuration file for
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.Nm ssh .
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl P Ar port
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Specifies the port to connect to on the remote host.
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Note that this option is written with a capital
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.Sq P ,
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because
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.Fl p
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is already reserved for preserving the times and modes of the file in
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.Xr rcp 1 .
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.It Fl S Ar program
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Name of
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.Ar program
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to use for the encrypted connection.
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The program must understand
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.Xr ssh 1
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options.
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.It Fl o Ar ssh_option
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Can be used to pass options to
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.Nm ssh
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in the format used in
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.Xr ssh_config 5 .
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This is useful for specifying options
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for which there is no separate
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.Nm scp
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command-line flag.
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.It Fl 1
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Forces
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.Nm
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@ -144,6 +78,125 @@ to use IPv4 addresses only.
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Forces
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.Nm
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to use IPv6 addresses only.
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.It Fl B
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Selects batch mode (prevents asking for passwords or passphrases).
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.It Fl C
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Compression enable.
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Passes the
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.Fl C
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flag to
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.Xr ssh 1
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to enable compression.
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.It Fl c Ar cipher
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Selects the cipher to use for encrypting the data transfer.
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl F Ar ssh_config
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Specifies an alternative
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per-user configuration file for
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.Nm ssh .
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl i Ar identity_file
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Selects the file from which the identity (private key) for RSA
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authentication is read.
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This option is directly passed to
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.Xr ssh 1 .
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.It Fl l Ar limit
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Limits the used bandwidth, specified in Kbit/s.
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.It Fl o Ar ssh_option
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Can be used to pass options to
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.Nm ssh
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in the format used in
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.Xr ssh_config 5 .
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This is useful for specifying options
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for which there is no separate
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.Nm scp
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command-line flag.
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For full details of the options listed below, and their possible values, see
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.Xr ssh_config 5 .
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.Pp
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.Bl -tag -width Ds -offset indent -compact
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.It AddressFamily
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.It BatchMode
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.It BindAddress
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.It ChallengeResponseAuthentication
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.It CheckHostIP
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.It Cipher
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.It Ciphers
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.It ClearAllForwardings
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.It Compression
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.It CompressionLevel
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.It ConnectionAttempts
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.It ConnectionTimeout
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.It DynamicForward
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.It EscapeChar
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.It ForwardAgent
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.It ForwardX11
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.It GatewayPorts
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.It GlobalKnownHostsFile
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.It GSSAPIAuthentication
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.It GSSAPIDelegateCredentials
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.It Host
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.It HostbasedAuthentication
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.It HostKeyAlgorithms
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.It HostKeyAlias
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.It HostName
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.It IdentityFile
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.It KeepAlive
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.It LocalForward
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.It LogLevel
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.It MACs
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.It NoHostAuthenticationForLocalhost
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.It NumberOfPasswordPrompts
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.It PasswordAuthentication
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.It Port
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.It PreferredAuthentications
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.It Protocol
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.It ProxyCommand
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.It PubkeyAuthentication
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.It RemoteForward
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.It RhostsRSAAuthentication
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.It RSAAuthentication
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.It SmartcardDevice
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.It StrictHostKeyChecking
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.It UsePrivilegedPort
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.It User
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.It UserKnownHostsFile
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.It VerifyHostKeyDNS
|
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.It XAuthLocation
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.El
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.It Fl P Ar port
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Specifies the port to connect to on the remote host.
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Note that this option is written with a capital
|
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.Sq P ,
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because
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.Fl p
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is already reserved for preserving the times and modes of the file in
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.Xr rcp 1 .
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.It Fl p
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Preserves modification times, access times, and modes from the
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original file.
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.It Fl q
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Disables the progress meter.
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.It Fl r
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||||
Recursively copy entire directories.
|
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.It Fl S Ar program
|
||||
Name of
|
||||
.Ar program
|
||||
to use for the encrypted connection.
|
||||
The program must understand
|
||||
.Xr ssh 1
|
||||
options.
|
||||
.It Fl v
|
||||
Verbose mode.
|
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Causes
|
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.Nm
|
||||
and
|
||||
.Xr ssh 1
|
||||
to print debugging messages about their progress.
|
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This is helpful in
|
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debugging connection, authentication, and configuration problems.
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.El
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.Sh DIAGNOSTICS
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.Nm
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@ -165,5 +218,4 @@ program in BSD source code from the Regents of the University of
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California.
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.Sh AUTHORS
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.An Timo Rinne Aq tri@iki.fi
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and
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.An Tatu Ylonen Aq ylo@cs.hut.fi
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|
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6
scp.c
6
scp.c
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@ -71,7 +71,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: scp.c,v 1.109 2003/09/19 17:40:20 markus Exp $");
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RCSID("$OpenBSD: scp.c,v 1.110 2003/10/08 08:27:36 jmc Exp $");
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#include "xmalloc.h"
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#include "atomicio.h"
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@ -1019,8 +1019,8 @@ void
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usage(void)
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{
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(void) fprintf(stderr,
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"usage: scp [-pqrvBC1246] [-F config] [-S program] [-P port]\n"
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" [-c cipher] [-i identity] [-l limit] [-o option]\n"
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"usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
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" [-l limit] [-o ssh_option] [-P port] [-S program]\n"
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" [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
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exit(1);
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}
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|
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@ -1,4 +1,4 @@
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.\" $OpenBSD: sftp-server.8,v 1.9 2003/06/10 09:12:11 jmc Exp $
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.\" $OpenBSD: sftp-server.8,v 1.10 2003/10/08 08:27:36 jmc Exp $
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.\"
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.\" Copyright (c) 2000 Markus Friedl. All rights reserved.
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.\"
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@ -41,11 +41,12 @@ using the
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|||
.Cm Subsystem
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||||
option.
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See
|
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.Xr sshd 8
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.Xr sshd_config 5
|
||||
for more information.
|
||||
.Sh SEE ALSO
|
||||
.Xr sftp 1 ,
|
||||
.Xr ssh 1 ,
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||||
.Xr sshd_config 5 ,
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||||
.Xr sshd 8
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.Rs
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.%A T. Ylonen
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|
|
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142
sftp.1
142
sftp.1
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@ -1,4 +1,4 @@
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.\" $OpenBSD: sftp.1,v 1.45 2003/09/02 18:50:06 jmc Exp $
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.\" $OpenBSD: sftp.1,v 1.46 2003/10/08 08:27:36 jmc Exp $
|
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.\"
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||||
.\" Copyright (c) 2001 Damien Miller. All rights reserved.
|
||||
.\"
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@ -31,15 +31,15 @@
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.Sh SYNOPSIS
|
||||
.Nm sftp
|
||||
.Bk -words
|
||||
.Op Fl vC1
|
||||
.Op Fl b Ar batchfile
|
||||
.Op Fl o Ar ssh_option
|
||||
.Op Fl s Ar subsystem | sftp_server
|
||||
.Op Fl 1Cv
|
||||
.Op Fl B Ar buffer_size
|
||||
.Op Fl b Ar batchfile
|
||||
.Op Fl F Ar ssh_config
|
||||
.Op Fl P Ar sftp_server path
|
||||
.Op Fl o Ar ssh_option
|
||||
.Op Fl P Ar sftp_server_path
|
||||
.Op Fl R Ar num_requests
|
||||
.Op Fl S Ar program
|
||||
.Op Fl s Ar subsystem | sftp_server
|
||||
.Ar host
|
||||
.Ek
|
||||
.Nm sftp
|
||||
|
|
@ -84,6 +84,15 @@ and
|
|||
for details).
|
||||
The options are as follows:
|
||||
.Bl -tag -width Ds
|
||||
.It Fl 1
|
||||
Specify the use of protocol version 1.
|
||||
.It Fl B Ar buffer_size
|
||||
Specify the size of the buffer that
|
||||
.Nm
|
||||
uses when transferring files.
|
||||
Larger buffers require fewer round trips at the cost of higher
|
||||
memory consumption.
|
||||
The default is 32768 bytes.
|
||||
.It Fl b Ar batchfile
|
||||
Batch mode reads a series of commands from an input
|
||||
.Ar batchfile
|
||||
|
|
@ -104,6 +113,16 @@ prefixing the command with a
|
|||
.Sq Ic \-
|
||||
character (for example,
|
||||
.Ic -rm /tmp/blah* ) .
|
||||
.It Fl C
|
||||
Enables compression (via ssh's
|
||||
.Fl C
|
||||
flag).
|
||||
.It Fl F Ar ssh_config
|
||||
Specifies an alternative
|
||||
per-user configuration file for
|
||||
.Xr ssh 1 .
|
||||
This option is directly passed to
|
||||
.Xr ssh 1 .
|
||||
.It Fl o Ar ssh_option
|
||||
Can be used to pass options to
|
||||
.Nm ssh
|
||||
|
|
@ -115,35 +134,60 @@ for which there is no separate
|
|||
command-line flag.
|
||||
For example, to specify an alternate port use:
|
||||
.Ic sftp -oPort=24 .
|
||||
.It Fl s Ar subsystem | sftp_server
|
||||
Specifies the SSH2 subsystem or the path for an sftp server
|
||||
on the remote host.
|
||||
A path is useful for using
|
||||
.Nm
|
||||
over protocol version 1, or when the remote
|
||||
.Xr sshd 8
|
||||
does not have an sftp subsystem configured.
|
||||
.It Fl v
|
||||
Raise logging level.
|
||||
This option is also passed to ssh.
|
||||
.It Fl B Ar buffer_size
|
||||
Specify the size of the buffer that
|
||||
.Nm
|
||||
uses when transferring files.
|
||||
Larger buffers require fewer round trips at the cost of higher
|
||||
memory consumption.
|
||||
The default is 32768 bytes.
|
||||
.It Fl C
|
||||
Enables compression (via ssh's
|
||||
.Fl C
|
||||
flag).
|
||||
.It Fl F Ar ssh_config
|
||||
Specifies an alternative
|
||||
per-user configuration file for
|
||||
.Xr ssh 1 .
|
||||
This option is directly passed to
|
||||
.Xr ssh 1 .
|
||||
.It Fl P Ar sftp_server path
|
||||
For full details of the options listed below, and their possible values, see
|
||||
.Xr ssh_config 5 .
|
||||
.Pp
|
||||
.Bl -tag -width Ds -offset indent -compact
|
||||
.It AddressFamily
|
||||
.It BatchMode
|
||||
.It BindAddress
|
||||
.It ChallengeResponseAuthentication
|
||||
.It CheckHostIP
|
||||
.It Cipher
|
||||
.It Ciphers
|
||||
.It ClearAllForwardings
|
||||
.It Compression
|
||||
.It CompressionLevel
|
||||
.It ConnectionAttempts
|
||||
.It ConnectionTimeout
|
||||
.It DynamicForward
|
||||
.It EscapeChar
|
||||
.It ForwardAgent
|
||||
.It ForwardX11
|
||||
.It GatewayPorts
|
||||
.It GlobalKnownHostsFile
|
||||
.It GSSAPIAuthentication
|
||||
.It GSSAPIDelegateCredentials
|
||||
.It Host
|
||||
.It HostbasedAuthentication
|
||||
.It HostKeyAlgorithms
|
||||
.It HostKeyAlias
|
||||
.It HostName
|
||||
.It IdentityFile
|
||||
.It KeepAlive
|
||||
.It LocalForward
|
||||
.It LogLevel
|
||||
.It MACs
|
||||
.It NoHostAuthenticationForLocalhost
|
||||
.It NumberOfPasswordPrompts
|
||||
.It PasswordAuthentication
|
||||
.It Port
|
||||
.It PreferredAuthentications
|
||||
.It Protocol
|
||||
.It ProxyCommand
|
||||
.It PubkeyAuthentication
|
||||
.It RemoteForward
|
||||
.It RhostsRSAAuthentication
|
||||
.It RSAAuthentication
|
||||
.It SmartcardDevice
|
||||
.It StrictHostKeyChecking
|
||||
.It UsePrivilegedPort
|
||||
.It User
|
||||
.It UserKnownHostsFile
|
||||
.It VerifyHostKeyDNS
|
||||
.It XAuthLocation
|
||||
.El
|
||||
.It Fl P Ar sftp_server_path
|
||||
Connect directly to a local sftp server
|
||||
(rather than via
|
||||
.Xr ssh 1 )
|
||||
|
|
@ -160,8 +204,17 @@ to use for the encrypted connection.
|
|||
The program must understand
|
||||
.Xr ssh 1
|
||||
options.
|
||||
.It Fl 1
|
||||
Specify the use of protocol version 1.
|
||||
.It Fl s Ar subsystem | sftp_server
|
||||
Specifies the SSH2 subsystem or the path for an sftp server
|
||||
on the remote host.
|
||||
A path is useful for using
|
||||
.Nm
|
||||
over protocol version 1, or when the remote
|
||||
.Xr sshd 8
|
||||
does not have an sftp subsystem configured.
|
||||
.It Fl v
|
||||
Raise logging level.
|
||||
This option is also passed to ssh.
|
||||
.El
|
||||
.Sh INTERACTIVE COMMANDS
|
||||
Once in interactive mode,
|
||||
|
|
@ -170,16 +223,13 @@ understands a set of commands similar to those of
|
|||
.Xr ftp 1 .
|
||||
Commands are case insensitive and pathnames may be enclosed in quotes if they
|
||||
contain spaces.
|
||||
.Bl -tag -width Ds
|
||||
.Bl -tag -width "lmdir path"
|
||||
.It Ic bye
|
||||
Quit
|
||||
.Nm sftp .
|
||||
.It Ic cd Ar path
|
||||
Change remote directory to
|
||||
.Ar path .
|
||||
.It Ic lcd Ar path
|
||||
Change local directory to
|
||||
.Ar path .
|
||||
.It Ic chgrp Ar grp Ar path
|
||||
Change group of file
|
||||
.Ar path
|
||||
|
|
@ -219,6 +269,9 @@ flag is specified, then the file's full permission and access time are
|
|||
copied too.
|
||||
.It Ic help
|
||||
Display help text.
|
||||
.It Ic lcd Ar path
|
||||
Change local directory to
|
||||
.Ar path .
|
||||
.It Ic lls Op Ar ls-options Op Ar path
|
||||
Display local directory listing of either
|
||||
.Ar path
|
||||
|
|
@ -280,12 +333,12 @@ Rename remote file from
|
|||
.Ar oldpath
|
||||
to
|
||||
.Ar newpath .
|
||||
.It Ic rmdir Ar path
|
||||
Remove remote directory specified by
|
||||
.Ar path .
|
||||
.It Ic rm Ar path
|
||||
Delete remote file specified by
|
||||
.Ar path .
|
||||
.It Ic rmdir Ar path
|
||||
Remove remote directory specified by
|
||||
.Ar path .
|
||||
.It Ic symlink Ar oldpath Ar newpath
|
||||
Create a symbolic link from
|
||||
.Ar oldpath
|
||||
|
|
@ -305,6 +358,7 @@ Escape to local shell.
|
|||
Synonym for help.
|
||||
.El
|
||||
.Sh SEE ALSO
|
||||
.Xr ftp 1 ,
|
||||
.Xr scp 1 ,
|
||||
.Xr ssh 1 ,
|
||||
.Xr ssh-add 1 ,
|
||||
|
|
|
|||
12
sftp.c
12
sftp.c
|
|
@ -24,7 +24,7 @@
|
|||
|
||||
#include "includes.h"
|
||||
|
||||
RCSID("$OpenBSD: sftp.c,v 1.37 2003/07/10 20:05:55 markus Exp $");
|
||||
RCSID("$OpenBSD: sftp.c,v 1.38 2003/10/08 08:27:36 jmc Exp $");
|
||||
|
||||
#include "buffer.h"
|
||||
#include "xmalloc.h"
|
||||
|
|
@ -112,10 +112,12 @@ usage(void)
|
|||
extern char *__progname;
|
||||
|
||||
fprintf(stderr,
|
||||
"usage: %s [-vC1] [-b batchfile] [-o ssh_option] [-s subsystem | sftp_server]\n"
|
||||
" [-B buffer_size] [-F ssh_config] [-P sftp_server path]\n"
|
||||
" [-R num_requests] [-S program]\n"
|
||||
" [user@]host[:file [file]]\n", __progname);
|
||||
"usage: %s [-1Cv] [-B buffer_size] [-b batchfile] [-F ssh_config]\n"
|
||||
" [-o ssh_option] [-P sftp_server_path] [-R num_requests]\n"
|
||||
" [-S program] [-s subsystem | sftp_server] host\n"
|
||||
" %s [[user@]host[:file [file]]]\n"
|
||||
" %s [[user@]host[:dir[/]]]\n"
|
||||
" %s -b batchfile [user@]host\n", __progname, __progname, __progname, __progname);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
|
|
|
|||
3
ssh.1
3
ssh.1
|
|
@ -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 1.176 2003/09/29 11:40:51 jmc Exp $
|
||||
.\" $OpenBSD: ssh.1,v 1.177 2003/10/08 08:27:36 jmc Exp $
|
||||
.Dd September 25, 1999
|
||||
.Dt SSH 1
|
||||
.Os
|
||||
|
|
@ -621,7 +621,6 @@ For full details of the options listed below, and their possible values, see
|
|||
.It ConnectionAttempts
|
||||
.It ConnectionTimeout
|
||||
.It DynamicForward
|
||||
.It EnableSSHKeysign
|
||||
.It EscapeChar
|
||||
.It ForwardAgent
|
||||
.It ForwardX11
|
||||
|
|
|
|||
85
sshd.8
85
sshd.8
|
|
@ -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: sshd.8,v 1.199 2003/08/13 08:46:31 markus Exp $
|
||||
.\" $OpenBSD: sshd.8,v 1.200 2003/10/08 08:27:36 jmc Exp $
|
||||
.Dd September 25, 1999
|
||||
.Dt SSHD 8
|
||||
.Os
|
||||
|
|
@ -44,7 +44,7 @@
|
|||
.Sh SYNOPSIS
|
||||
.Nm sshd
|
||||
.Bk -words
|
||||
.Op Fl deiqtD46
|
||||
.Op Fl 46Ddeiqt
|
||||
.Op Fl b Ar bits
|
||||
.Op Fl f Ar config_file
|
||||
.Op Fl g Ar login_grace_time
|
||||
|
|
@ -78,9 +78,7 @@ This implementation of
|
|||
supports both SSH protocol version 1 and 2 simultaneously.
|
||||
.Nm
|
||||
works as follows:
|
||||
.Pp
|
||||
.Ss SSH protocol version 1
|
||||
.Pp
|
||||
Each host has a host-specific RSA key
|
||||
(normally 1024 bits) used to identify the host.
|
||||
Additionally, when
|
||||
|
|
@ -92,7 +90,7 @@ Whenever a client connects, the daemon responds with its public
|
|||
host and server keys.
|
||||
The client compares the
|
||||
RSA host key against its own database to verify that it has not changed.
|
||||
The client then generates a 256 bit random number.
|
||||
The client then generates a 256-bit random number.
|
||||
It encrypts this
|
||||
random number using both the host key and the server key, and sends
|
||||
the encrypted number to the server.
|
||||
|
|
@ -107,9 +105,9 @@ to use from those offered by the server.
|
|||
.Pp
|
||||
Next, the server and the client enter an authentication dialog.
|
||||
The client tries to authenticate itself using
|
||||
.Pa .rhosts
|
||||
.Em .rhosts
|
||||
authentication,
|
||||
.Pa .rhosts
|
||||
.Em .rhosts
|
||||
authentication combined with RSA host
|
||||
authentication, RSA challenge-response authentication, or password
|
||||
based authentication.
|
||||
|
|
@ -137,7 +135,8 @@ or
|
|||
.Ql \&*NP\&*
|
||||
).
|
||||
.Pp
|
||||
Rhosts authentication is normally disabled
|
||||
.Em rhosts
|
||||
authentication is normally disabled
|
||||
because it is fundamentally insecure, but can be enabled in the server
|
||||
configuration file if desired.
|
||||
System security is not improved unless
|
||||
|
|
@ -150,9 +149,7 @@ are disabled (thus completely disabling
|
|||
and
|
||||
.Xr rsh
|
||||
into the machine).
|
||||
.Pp
|
||||
.Ss SSH protocol version 2
|
||||
.Pp
|
||||
Version 2 works similarly:
|
||||
Each host has a host-specific key (RSA or DSA) used to identify the host.
|
||||
However, when the daemon starts, it does not generate a server key.
|
||||
|
|
@ -160,7 +157,7 @@ Forward security is provided through a Diffie-Hellman key agreement.
|
|||
This key agreement results in a shared session key.
|
||||
.Pp
|
||||
The rest of the session is encrypted using a symmetric cipher, currently
|
||||
128 bit AES, Blowfish, 3DES, CAST128, Arcfour, 192 bit AES, or 256 bit AES.
|
||||
128-bit AES, Blowfish, 3DES, CAST128, Arcfour, 192-bit AES, or 256-bit AES.
|
||||
The client selects the encryption algorithm
|
||||
to use from those offered by the server.
|
||||
Additionally, session integrity is provided
|
||||
|
|
@ -171,9 +168,7 @@ Protocol version 2 provides a public key based
|
|||
user (PubkeyAuthentication) or
|
||||
client host (HostbasedAuthentication) authentication method,
|
||||
conventional password authentication and challenge response based methods.
|
||||
.Pp
|
||||
.Ss Command execution and data forwarding
|
||||
.Pp
|
||||
If the client successfully authenticates itself, a dialog for
|
||||
preparing the session is entered.
|
||||
At this time the client may request
|
||||
|
|
@ -192,8 +187,9 @@ connections have been closed, the server sends command exit status to
|
|||
the client, and both sides exit.
|
||||
.Pp
|
||||
.Nm
|
||||
can be configured using command-line options or a configuration
|
||||
file.
|
||||
can be configured using command-line options or a configuration file
|
||||
(by default
|
||||
.Xr sshd_config 5 ) .
|
||||
Command-line options override values specified in the
|
||||
configuration file.
|
||||
.Pp
|
||||
|
|
@ -205,9 +201,23 @@ by executing itself with the name it was started as, i.e.,
|
|||
.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 b Ar bits
|
||||
Specifies the number of bits in the ephemeral protocol version 1
|
||||
server key (default 768).
|
||||
.It Fl D
|
||||
When this option is specified,
|
||||
.Nm
|
||||
will not detach and does not become a daemon.
|
||||
This allows easy monitoring of
|
||||
.Nm sshd .
|
||||
.It Fl d
|
||||
Debug mode.
|
||||
The server sends verbose debug output to the system
|
||||
|
|
@ -267,7 +277,7 @@ be feasible.
|
|||
Specifies how often the ephemeral protocol version 1 server key is
|
||||
regenerated (default 3600 seconds, or one hour).
|
||||
The motivation for regenerating the key fairly
|
||||
often is that the key is not stored anywhere, and after about an hour,
|
||||
often is that the key is not stored anywhere, and after about an hour
|
||||
it becomes impossible to recover the key for decrypting intercepted
|
||||
communications even if the machine is cracked into or physically
|
||||
seized.
|
||||
|
|
@ -276,6 +286,8 @@ A value of zero indicates that the key will never be regenerated.
|
|||
Can be used to give options in the format used in the configuration file.
|
||||
This is useful for specifying options for which there is no separate
|
||||
command-line flag.
|
||||
For full details of the options, and their values, see
|
||||
.Xr sshd_config 5 .
|
||||
.It Fl p Ar port
|
||||
Specifies the port on which the server listens for connections
|
||||
(default 22).
|
||||
|
|
@ -325,20 +337,6 @@ USER@HOST pattern in
|
|||
.Cm AllowUsers
|
||||
or
|
||||
.Cm DenyUsers .
|
||||
.It Fl D
|
||||
When this option is specified
|
||||
.Nm
|
||||
will not detach and does not become a daemon.
|
||||
This allows easy monitoring of
|
||||
.Nm sshd .
|
||||
.It Fl 4
|
||||
Forces
|
||||
.Nm
|
||||
to use IPv4 addresses only.
|
||||
.It Fl 6
|
||||
Forces
|
||||
.Nm
|
||||
to use IPv6 addresses only.
|
||||
.El
|
||||
.Sh CONFIGURATION FILE
|
||||
.Nm
|
||||
|
|
@ -375,9 +373,9 @@ Changes to run with normal user privileges.
|
|||
.It
|
||||
Sets up basic environment.
|
||||
.It
|
||||
Reads
|
||||
.Pa $HOME/.ssh/environment
|
||||
if it exists and users are allowed to change their environment.
|
||||
Reads the file
|
||||
.Pa $HOME/.ssh/environment ,
|
||||
if it exists, and users are allowed to change their environment.
|
||||
See the
|
||||
.Cm PermitUserEnvironment
|
||||
option in
|
||||
|
|
@ -516,7 +514,7 @@ Limit local
|
|||
port forwarding such that it may only connect to the specified host and
|
||||
port.
|
||||
IPv6 addresses can be specified with an alternative syntax:
|
||||
.Ar host/port .
|
||||
.Ar host Ns / Ns Ar port .
|
||||
Multiple
|
||||
.Cm permitopen
|
||||
options may be applied separated by commas.
|
||||
|
|
@ -524,13 +522,13 @@ No pattern matching is performed on the specified hostnames,
|
|||
they must be literal domains or addresses.
|
||||
.El
|
||||
.Ss Examples
|
||||
1024 33 12121.\|.\|.\|312314325 ylo@foo.bar
|
||||
1024 33 12121...312314325 ylo@foo.bar
|
||||
.Pp
|
||||
from="*.niksula.hut.fi,!pc.niksula.hut.fi" 1024 35 23.\|.\|.\|2334 ylo@niksula
|
||||
from="*.niksula.hut.fi,!pc.niksula.hut.fi" 1024 35 23...2334 ylo@niksula
|
||||
.Pp
|
||||
command="dump /home",no-pty,no-port-forwarding 1024 33 23.\|.\|.\|2323 backup.hut.fi
|
||||
command="dump /home",no-pty,no-port-forwarding 1024 33 23...2323 backup.hut.fi
|
||||
.Pp
|
||||
permitopen="10.2.1.55:80",permitopen="10.2.1.56:25" 1024 33 23.\|.\|.\|2323
|
||||
permitopen="10.2.1.55:80",permitopen="10.2.1.56:25" 1024 33 23...2323
|
||||
.Sh SSH_KNOWN_HOSTS FILE FORMAT
|
||||
The
|
||||
.Pa /etc/ssh/ssh_known_hosts
|
||||
|
|
@ -588,7 +586,7 @@ or by taking
|
|||
and adding the host names at the front.
|
||||
.Ss Examples
|
||||
.Bd -literal
|
||||
closenet,.\|.\|.\|,130.233.208.41 1024 37 159.\|.\|.93 closenet.hut.fi
|
||||
closenet,...,130.233.208.41 1024 37 159...93 closenet.hut.fi
|
||||
cvs.openbsd.org,199.185.137.3 ssh-rsa AAAA1234.....=
|
||||
.Ed
|
||||
.Sh FILES
|
||||
|
|
@ -647,7 +645,7 @@ and/or
|
|||
.Pa id_rsa.pub
|
||||
files into this file, as described in
|
||||
.Xr ssh-keygen 1 .
|
||||
.It Pa "/etc/ssh/ssh_known_hosts" and "$HOME/.ssh/known_hosts"
|
||||
.It Pa "/etc/ssh/ssh_known_hosts", "$HOME/.ssh/known_hosts"
|
||||
These files are consulted when using rhosts with RSA host
|
||||
authentication or protocol version 2 hostbased authentication
|
||||
to check the public key of the host.
|
||||
|
|
@ -681,7 +679,7 @@ The file must
|
|||
be writable only by the user; it is recommended that it not be
|
||||
accessible by others.
|
||||
.Pp
|
||||
If is also possible to use netgroups in the file.
|
||||
It is also possible to use netgroups in the file.
|
||||
Either host or user
|
||||
name may be of the form +@groupname to specify all hosts or all users
|
||||
in the group.
|
||||
|
|
@ -693,7 +691,7 @@ However, this file is
|
|||
not used by rlogin and rshd, so using this permits access using SSH only.
|
||||
.It Pa /etc/hosts.equiv
|
||||
This file is used during
|
||||
.Pa .rhosts
|
||||
.Em rhosts
|
||||
authentication.
|
||||
In the simplest form, this file contains host names, one per line.
|
||||
Users on
|
||||
|
|
@ -800,9 +798,12 @@ This file should be writable only by root, and should be world-readable.
|
|||
.Xr ssh-add 1 ,
|
||||
.Xr ssh-agent 1 ,
|
||||
.Xr ssh-keygen 1 ,
|
||||
.Xr chroot 2 ,
|
||||
.Xr hosts_access 5 ,
|
||||
.Xr login.conf 5 ,
|
||||
.Xr moduli 5 ,
|
||||
.Xr sshd_config 5 ,
|
||||
.Xr inetd 8 ,
|
||||
.Xr sftp-server 8
|
||||
.Rs
|
||||
.%A T. Ylonen
|
||||
|
|
|
|||
Loading…
Reference in New Issue