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authordes <des@FreeBSD.org>2002-10-29 09:43:00 +0000
committerdes <des@FreeBSD.org>2002-10-29 09:43:00 +0000
commit099d1a58f7bc088a9f71af6d32542ca3949468a3 (patch)
tree49cef8938d7beb10016662d15546fa090865073d /crypto/openssh/sshd.8
parent1ba793a7c09e24d920de3983a3223770cb37ebff (diff)
downloadFreeBSD-src-099d1a58f7bc088a9f71af6d32542ca3949468a3.zip
FreeBSD-src-099d1a58f7bc088a9f71af6d32542ca3949468a3.tar.gz
Vendor import of OpenSSH-portable 3.5p1.
Diffstat (limited to 'crypto/openssh/sshd.8')
-rw-r--r--crypto/openssh/sshd.840
1 files changed, 27 insertions, 13 deletions
diff --git a/crypto/openssh/sshd.8 b/crypto/openssh/sshd.8
index 37a7b58..22ab70e 100644
--- a/crypto/openssh/sshd.8
+++ b/crypto/openssh/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 1.186 2002/06/22 16:45:29 stevesk Exp $
+.\" $OpenBSD: sshd.8,v 1.193 2002/09/24 20:59:44 todd Exp $
.Dd September 25, 1999
.Dt SSHD 8
.Os
@@ -203,7 +203,7 @@ The default is
refuses to start if there is no configuration file.
.It Fl g Ar login_grace_time
Gives the grace time for clients to authenticate themselves (default
-600 seconds).
+120 seconds).
If the client fails to authenticate the user within
this many seconds, the server disconnects and exits.
A value of zero indicates no limit.
@@ -350,7 +350,11 @@ Sets up basic environment.
.It
Reads
.Pa $HOME/.ssh/environment
-if it exists.
+if it exists and users are allowed to change their environment.
+See the
+.Cm PermitUserEnvironment
+option in
+.Xr sshd_config 5 .
.It
Changes to user's home directory.
.It
@@ -385,9 +389,9 @@ Each RSA public key consists of the following fields, separated by
spaces: options, bits, exponent, modulus, comment.
Each protocol version 2 public key consists of:
options, keytype, base64 encoded key, comment.
-The options fields
-are optional; its presence is determined by whether the line starts
-with a number or not (the option field never starts with a number).
+The options field
+is optional; its presence is determined by whether the line starts
+with a number or not (the options field never starts with a number).
The bits, exponent, modulus and comment fields give the RSA key for
protocol version 1; the
comment field is not used for anything (but may be convenient for the
@@ -398,7 +402,7 @@ or
.Dq ssh-rsa .
.Pp
Note that lines in this file are usually several hundred bytes long
-(because of the size of the RSA key modulus).
+(because of the size of the public key encoding).
You don't want to type them in; instead, copy the
.Pa identity.pub ,
.Pa id_dsa.pub
@@ -417,7 +421,7 @@ The following option specifications are supported (note
that option keywords are case-insensitive):
.Bl -tag -width Ds
.It Cm from="pattern-list"
-Specifies that in addition to RSA authentication, the canonical name
+Specifies that in addition to public key authentication, the canonical name
of the remote host must be present in the comma-separated list of
patterns
.Pf ( Ql *
@@ -429,7 +433,7 @@ patterns negated by prefixing them with
.Ql ! ;
if the canonical host name matches a negated pattern, the key is not accepted.
The purpose
-of this option is to optionally increase security: RSA authentication
+of this option is to optionally increase security: public key authentication
by itself does not trust the network or name servers or anything (but
the key); however, if somebody somehow steals the key, the key
permits an intruder to log in from anywhere in the world.
@@ -447,7 +451,7 @@ one must not request a pty or should specify
.Cm no-pty .
A quote may be included in the command by quoting it with a backslash.
This option might be useful
-to restrict certain RSA keys to perform just a specific operation.
+to restrict certain public keys to perform just a specific operation.
An example might be a key that permits remote backups but nothing else.
Note that the client may specify TCP/IP and/or X11
forwarding unless they are explicitly prohibited.
@@ -458,6 +462,10 @@ logging in using this key.
Environment variables set this way
override other default environment values.
Multiple options of this type are permitted.
+Environment processing is disabled by default and is
+controlled via the
+.Cm PermitUserEnvironment
+option.
This option is automatically disabled if
.Cm UseLogin
is enabled.
@@ -578,6 +586,8 @@ These files are created using
.Xr ssh-keygen 1 .
.It Pa /etc/moduli
Contains Diffie-Hellman groups used for the "Diffie-Hellman Group Exchange".
+The file format is described in
+.Xr moduli 5 .
.It Pa /var/empty
.Xr chroot 2
directory used by
@@ -698,6 +708,10 @@ It can only contain empty lines, comment lines (that start with
and assignment lines of the form name=value.
The file should be writable
only by the user; it need not be readable by anyone else.
+Environment processing is disabled by default and is
+controlled via the
+.Cm PermitUserEnvironment
+option.
.It Pa $HOME/.ssh/rc
If this file exists, it is run with /bin/sh after reading the
environment files but before starting the user's shell or command.
@@ -723,12 +737,12 @@ something similar to:
if read proto cookie && [ -n "$DISPLAY" ]; then
if [ `echo $DISPLAY | cut -c1-10` = 'localhost:' ]; then
# X11UseLocalhost=yes
- xauth add unix:`echo $DISPLAY |
+ echo add unix:`echo $DISPLAY |
cut -c11-` $proto $cookie
else
# X11UseLocalhost=no
- xauth add $DISPLAY $proto $cookie
- fi
+ echo add $DISPLAY $proto $cookie
+ fi | xauth -q -
fi
.Ed
.Pp
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