diff options
Diffstat (limited to 'sshd.8')
-rw-r--r-- | sshd.8 | 39 |
1 files changed, 22 insertions, 17 deletions
@@ -34,8 +34,8 @@ | |||
34 | .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 34 | .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
35 | .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 35 | .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
36 | .\" | 36 | .\" |
37 | .\" $OpenBSD: sshd.8,v 1.234 2006/08/21 08:15:57 dtucker Exp $ | 37 | .\" $OpenBSD: sshd.8,v 1.237 2007/06/07 19:37:34 pvalchev Exp $ |
38 | .Dd September 25, 1999 | 38 | .Dd $Mdocdate: August 16 2007 $ |
39 | .Dt SSHD 8 | 39 | .Dt SSHD 8 |
40 | .Os | 40 | .Os |
41 | .Sh NAME | 41 | .Sh NAME |
@@ -58,8 +58,11 @@ | |||
58 | .Nm | 58 | .Nm |
59 | (OpenSSH Daemon) is the daemon program for | 59 | (OpenSSH Daemon) is the daemon program for |
60 | .Xr ssh 1 . | 60 | .Xr ssh 1 . |
61 | Together these programs replace rlogin and rsh, and | 61 | Together these programs replace |
62 | provide secure encrypted communications between two untrusted hosts | 62 | .Xr rlogin 1 |
63 | and | ||
64 | .Xr rsh 1 , | ||
65 | and provide secure encrypted communications between two untrusted hosts | ||
63 | over an insecure network. | 66 | over an insecure network. |
64 | .Pp | 67 | .Pp |
65 | .Nm | 68 | .Nm |
@@ -117,7 +120,7 @@ Maximum is 3. | |||
117 | When this option is specified, | 120 | When this option is specified, |
118 | .Nm | 121 | .Nm |
119 | will send the output to the standard error instead of the system log. | 122 | will send the output to the standard error instead of the system log. |
120 | .It Fl f Ar configuration_file | 123 | .It Fl f Ar config_file |
121 | Specifies the name of the configuration file. | 124 | Specifies the name of the configuration file. |
122 | The default is | 125 | The default is |
123 | .Pa /etc/ssh/sshd_config . | 126 | .Pa /etc/ssh/sshd_config . |
@@ -273,7 +276,7 @@ The client selects the encryption algorithm | |||
273 | to use from those offered by the server. | 276 | to use from those offered by the server. |
274 | Additionally, session integrity is provided | 277 | Additionally, session integrity is provided |
275 | through a cryptographic message authentication code | 278 | through a cryptographic message authentication code |
276 | (hmac-sha1 or hmac-md5). | 279 | (hmac-md5, hmac-sha1, umac-64 or hmac-ripemd160). |
277 | .Pp | 280 | .Pp |
278 | Finally, the server and the client enter an authentication dialog. | 281 | Finally, the server and the client enter an authentication dialog. |
279 | The client tries to authenticate itself using | 282 | The client tries to authenticate itself using |
@@ -299,8 +302,9 @@ on Tru64, | |||
299 | a leading | 302 | a leading |
300 | .Ql \&*LOCKED\&* | 303 | .Ql \&*LOCKED\&* |
301 | on FreeBSD and a leading | 304 | on FreeBSD and a leading |
302 | .Ql \&!! | 305 | .Ql \&! |
303 | on Linux). If there is a requirement to disable password authentication | 306 | on most Linuxes). |
307 | If there is a requirement to disable password authentication | ||
304 | for the account while allowing still public-key, then the passwd field | 308 | for the account while allowing still public-key, then the passwd field |
305 | should be set to something other than these values (eg | 309 | should be set to something other than these values (eg |
306 | .Ql NP | 310 | .Ql NP |
@@ -758,15 +762,6 @@ This file is used in exactly the same way as | |||
758 | but allows host-based authentication without permitting login with | 762 | but allows host-based authentication without permitting login with |
759 | rlogin/rsh. | 763 | rlogin/rsh. |
760 | .Pp | 764 | .Pp |
761 | .It /etc/ssh/ssh_known_hosts | ||
762 | Systemwide list of known host keys. | ||
763 | This file should be prepared by the | ||
764 | system administrator to contain the public host keys of all machines in the | ||
765 | organization. | ||
766 | The format of this file is described above. | ||
767 | This file should be writable only by root/the owner and | ||
768 | should be world-readable. | ||
769 | .Pp | ||
770 | .It /etc/ssh/ssh_host_key | 765 | .It /etc/ssh/ssh_host_key |
771 | .It /etc/ssh/ssh_host_dsa_key | 766 | .It /etc/ssh/ssh_host_dsa_key |
772 | .It /etc/ssh/ssh_host_rsa_key | 767 | .It /etc/ssh/ssh_host_rsa_key |
@@ -790,6 +785,15 @@ the user so their contents can be copied to known hosts files. | |||
790 | These files are created using | 785 | These files are created using |
791 | .Xr ssh-keygen 1 . | 786 | .Xr ssh-keygen 1 . |
792 | .Pp | 787 | .Pp |
788 | .It /etc/ssh/ssh_known_hosts | ||
789 | Systemwide list of known host keys. | ||
790 | This file should be prepared by the | ||
791 | system administrator to contain the public host keys of all machines in the | ||
792 | organization. | ||
793 | The format of this file is described above. | ||
794 | This file should be writable only by root/the owner and | ||
795 | should be world-readable. | ||
796 | .Pp | ||
793 | .It /etc/ssh/sshd_config | 797 | .It /etc/ssh/sshd_config |
794 | Contains configuration data for | 798 | Contains configuration data for |
795 | .Nm sshd . | 799 | .Nm sshd . |
@@ -826,6 +830,7 @@ The content of this file is not sensitive; it can be world-readable. | |||
826 | .Xr ssh-add 1 , | 830 | .Xr ssh-add 1 , |
827 | .Xr ssh-agent 1 , | 831 | .Xr ssh-agent 1 , |
828 | .Xr ssh-keygen 1 , | 832 | .Xr ssh-keygen 1 , |
833 | .Xr ssh-keyscan 1 , | ||
829 | .Xr chroot 2 , | 834 | .Xr chroot 2 , |
830 | .Xr hosts_access 5 , | 835 | .Xr hosts_access 5 , |
831 | .Xr login.conf 5 , | 836 | .Xr login.conf 5 , |