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authorColin Watson <cjwatson@debian.org>2014-10-07 13:33:15 +0100
committerColin Watson <cjwatson@debian.org>2014-10-07 14:27:30 +0100
commitf0b009aea83e9ff3a50be30f51012099a5143c16 (patch)
tree3825e6f7e3b7ea4481d06ed89aba9a7a95150df5 /ssh.1
parent47f0bad4330b16ec3bad870fcf9839c196e42c12 (diff)
parent762c062828f5a8f6ed189ed6e44ad38fd92f8b36 (diff)
Merge 6.7p1.
* New upstream release (http://www.openssh.com/txt/release-6.7): - sshd(8): The default set of ciphers and MACs has been altered to remove unsafe algorithms. In particular, CBC ciphers and arcfour* are disabled by default. The full set of algorithms remains available if configured explicitly via the Ciphers and MACs sshd_config options. - ssh(1), sshd(8): Add support for Unix domain socket forwarding. A remote TCP port may be forwarded to a local Unix domain socket and vice versa or both ends may be a Unix domain socket (closes: #236718). - ssh(1), ssh-keygen(1): Add support for SSHFP DNS records for ED25519 key types. - sftp(1): Allow resumption of interrupted uploads. - ssh(1): When rekeying, skip file/DNS lookups of the hostkey if it is the same as the one sent during initial key exchange. - sshd(8): Allow explicit ::1 and 127.0.0.1 forwarding bind addresses when GatewayPorts=no; allows client to choose address family. - sshd(8): Add a sshd_config PermitUserRC option to control whether ~/.ssh/rc is executed, mirroring the no-user-rc authorized_keys option. - ssh(1): Add a %C escape sequence for LocalCommand and ControlPath that expands to a unique identifer based on a hash of the tuple of (local host, remote user, hostname, port). Helps avoid exceeding miserly pathname limits for Unix domain sockets in multiplexing control paths. - sshd(8): Make the "Too many authentication failures" message include the user, source address, port and protocol in a format similar to the authentication success / failure messages. - Use CLOCK_BOOTTIME in preference to CLOCK_MONOTONIC when it is available. It considers time spent suspended, thereby ensuring timeouts (e.g. for expiring agent keys) fire correctly (closes: #734553). - Use prctl() to prevent sftp-server from accessing /proc/self/{mem,maps}. * Restore TCP wrappers support, removed upstream in 6.7. It is true that dropping this reduces preauth attack surface in sshd. On the other hand, this support seems to be quite widely used, and abruptly dropping it (from the perspective of users who don't read openssh-unix-dev) could easily cause more serious problems in practice. It's not entirely clear what the right long-term answer for Debian is, but it at least probably doesn't involve dropping this feature shortly before a freeze. * Replace patch to disable OpenSSL version check with an updated version of Kurt Roeckx's patch from #732940 to just avoid checking the status field.
Diffstat (limited to 'ssh.1')
-rw-r--r--ssh.135
1 files changed, 12 insertions, 23 deletions
diff --git a/ssh.1 b/ssh.1
index 986802598..2606b15b1 100644
--- a/ssh.1
+++ b/ssh.1
@@ -33,8 +33,8 @@
33.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35.\" 35.\"
36.\" $OpenBSD: ssh.1,v 1.343 2013/12/07 11:58:46 naddy Exp $ 36.\" $OpenBSD: ssh.1,v 1.348 2014/07/24 22:57:10 millert Exp $
37.Dd $Mdocdate: December 7 2013 $ 37.Dd $Mdocdate: July 24 2014 $
38.Dt SSH 1 38.Dt SSH 1
39.Os 39.Os
40.Sh NAME 40.Sh NAME
@@ -73,8 +73,9 @@ executing commands on a remote machine.
73It is intended to replace rlogin and rsh, 73It is intended to replace rlogin and rsh,
74and provide secure encrypted communications between 74and provide secure encrypted communications between
75two untrusted hosts over an insecure network. 75two untrusted hosts over an insecure network.
76X11 connections and arbitrary TCP ports 76X11 connections, arbitrary TCP ports and
77can also be forwarded over the secure channel. 77.Ux Ns -domain
78sockets can also be forwarded over the secure channel.
78.Pp 79.Pp
79.Nm 80.Nm
80connects and logs into the specified 81connects and logs into the specified
@@ -131,7 +132,9 @@ of the connection.
131Only useful on systems with more than one address. 132Only useful on systems with more than one address.
132.It Fl C 133.It Fl C
133Requests compression of all data (including stdin, stdout, stderr, and 134Requests compression of all data (including stdin, stdout, stderr, and
134data for forwarded X11 and TCP connections). 135data for forwarded X11, TCP and
136.Ux Ns -domain
137connections).
135The compression algorithm is the same used by 138The compression algorithm is the same used by
136.Xr gzip 1 , 139.Xr gzip 1 ,
137and the 140and the
@@ -154,23 +157,6 @@ The supported values are
154.Dq blowfish , 157.Dq blowfish ,
155and 158and
156.Dq des . 159.Dq des .
157.Ar 3des
158(triple-des) is an encrypt-decrypt-encrypt triple with three different keys.
159It is believed to be secure.
160.Ar blowfish
161is a fast block cipher; it appears very secure and is much faster than
162.Ar 3des .
163.Ar des
164is only supported in the
165.Nm
166client for interoperability with legacy protocol 1 implementations
167that do not support the
168.Ar 3des
169cipher.
170Its use is strongly discouraged due to cryptographic weaknesses.
171The default is
172.Dq 3des .
173.Pp
174For protocol version 2, 160For protocol version 2,
175.Ar cipher_spec 161.Ar cipher_spec
176is a comma-separated list of ciphers 162is a comma-separated list of ciphers
@@ -267,6 +253,8 @@ will wait for all remote port forwards to be successfully established
267before placing itself in the background. 253before placing itself in the background.
268.It Fl g 254.It Fl g
269Allows remote hosts to connect to local forwarded ports. 255Allows remote hosts to connect to local forwarded ports.
256If used on a multiplexed connection, then this option must be specified
257on the master process.
270.It Fl I Ar pkcs11 258.It Fl I Ar pkcs11
271Specify the PKCS#11 shared library 259Specify the PKCS#11 shared library
272.Nm 260.Nm
@@ -481,6 +469,8 @@ For full details of the options listed below, and their possible values, see
481.It SendEnv 469.It SendEnv
482.It ServerAliveInterval 470.It ServerAliveInterval
483.It ServerAliveCountMax 471.It ServerAliveCountMax
472.It StreamLocalBindMask
473.It StreamLocalBindUnlink
484.It StrictHostKeyChecking 474.It StrictHostKeyChecking
485.It TCPKeepAlive 475.It TCPKeepAlive
486.It Tunnel 476.It Tunnel
@@ -1472,7 +1462,6 @@ if an error occurred.
1472.Xr ssh-keygen 1 , 1462.Xr ssh-keygen 1 ,
1473.Xr ssh-keyscan 1 , 1463.Xr ssh-keyscan 1 ,
1474.Xr tun 4 , 1464.Xr tun 4 ,
1475.Xr hosts.equiv 5 ,
1476.Xr ssh_config 5 , 1465.Xr ssh_config 5 ,
1477.Xr ssh-keysign 8 , 1466.Xr ssh-keysign 8 ,
1478.Xr sshd 8 1467.Xr sshd 8