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sshd_config(5).
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changes not previously backported to 4.3p2:
- 4.4/4.4p1 (http://www.openssh.org/txt/release-4.4):
+ On portable OpenSSH, fix a GSSAPI authentication abort that could be
used to determine the validity of usernames on some platforms.
+ Implemented conditional configuration in sshd_config(5) using the
"Match" directive. This allows some configuration options to be
selectively overridden if specific criteria (based on user, group,
hostname and/or address) are met. So far a useful subset of
post-authentication options are supported and more are expected to
be added in future releases.
+ Add support for Diffie-Hellman group exchange key agreement with a
final hash of SHA256.
+ Added a "ForceCommand" directive to sshd_config(5). Similar to the
command="..." option accepted in ~/.ssh/authorized_keys, this forces
the execution of the specified command regardless of what the user
requested. This is very useful in conjunction with the new "Match"
option.
+ Add a "PermitOpen" directive to sshd_config(5). This mirrors the
permitopen="..." authorized_keys option, allowing fine-grained
control over the port-forwardings that a user is allowed to
establish.
+ Add optional logging of transactions to sftp-server(8).
+ ssh(1) will now record port numbers for hosts stored in
~/.ssh/known_hosts when a non-standard port has been requested
(closes: #50612).
+ Add an "ExitOnForwardFailure" option to cause ssh(1) to exit (with a
non-zero exit code) when requested port forwardings could not be
established.
+ Extend sshd_config(5) "SubSystem" declarations to allow the
specification of command-line arguments.
+ Replacement of all integer overflow susceptible invocations of
malloc(3) and realloc(3) with overflow-checking equivalents.
+ Many manpage fixes and improvements.
+ Add optional support for OpenSSL hardware accelerators (engines),
enabled using the --with-ssl-engine configure option.
+ Tokens in configuration files may be double-quoted in order to
contain spaces (closes: #319639).
+ Move a debug() call out of a SIGCHLD handler, fixing a hang when the
session exits very quickly (closes: #307890).
+ Fix some incorrect buffer allocation calculations (closes: #410599).
+ ssh-add doesn't ask for a passphrase if key file permissions are too
liberal (closes: #103677).
+ Likewise, ssh doesn't ask either (closes: #99675).
- 4.6/4.6p1 (http://www.openssh.org/txt/release-4.6):
+ sshd now allows the enabling and disabling of authentication methods
on a per user, group, host and network basis via the Match directive
in sshd_config.
+ Fixed an inconsistent check for a terminal when displaying scp
progress meter (closes: #257524).
+ Fix "hang on exit" when background processes are running at the time
of exit on a ttyful/login session (closes: #88337).
* Update to current GSSAPI patch from
http://www.sxw.org.uk/computing/patches/openssh-4.6p1-gsskex-20070312.patch;
install ChangeLog.gssapi.
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[ssh_config.5]
do not use a list for SYNOPSIS;
this is actually part of a larger report sent by eric s. raymond
and forwarded by brad, but i only read half of it. spotted by brad.
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[ssh_config.5]
avoid confusing wording in HashKnownHosts:
originally spotted by alan amesbury;
ok deraadt
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[clientloop.c ssh.1 ssh.c channels.c ssh_config.5 readconf.h session.c
channels.h readconf.c]
add ExitOnForwardFailure: terminate the connection if ssh(1)
cannot set up all requested dynamic, local, and remote port
forwardings. ok djm, dtucker, stevesk, jmc
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[ssh.1 ssh.c ssh_config.5 sshd_config.5]
more details and clarity for tun(4) device forwarding; ok and help
jmc@
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[ssh_config.5]
oops - previous was too long; split the list of auths up
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[ssh_config.5]
Add gssapi-with-mic to PreferredAuthentications default list; ok jmc
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http://www.sxw.org.uk/computing/patches/openssh-4.3p2-gsskex-20060223.patch
(closes: #352042).
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[ssh_config.5]
remote user escape is %r not %h; spotted by jmc@
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[ssh_config.5]
kill trailing whitespace;
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[ssh.c ssh_config.5]
add percent escape chars to the IdentityFile option, bz #1159 based
on a patch by imaging AT math.ualberta.ca; feedback and ok dtucker@
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[ssh_config.5 sshd_config.5]
*AliveCountMax applies to protcol v2 only; ok dtucker, djm
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[misc.c ssh_config.5 sshd_config.5]
Allow config directives to contain whitespace by surrounding them by double
quotes. mindrot #482, man page help from jmc@, ok djm@
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[ssh_config.5]
comma;
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[ssh_config.5]
move PATTERNS to the end of the main body; requested by dtucker
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[ssh_config.5]
document the possible values for KbdInteractiveDevices;
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[ssh_config.5]
some grammar/wording fixes;
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[ssh.1 ssh_config.5 sshd.8 sshd_config.5]
more consistency fixes;
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[ssh-keysign.8 ssh_config.5 sshd_config.5]
some consistency fixes;
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[ssh_config.5]
tidy up the refs to PATTERNS;
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[ssh_config.5]
add section on patterns;
from dtucker + myself
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[ssh_config.5]
add some vertical space;
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[ssh_config.5]
slight rewording; ok djm
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[ssh.c ssh_config.5]
add a %l expansion code to the ControlPath, which is filled in with the
local hostname at runtime. Requested by henning@ to avoid some problems
with /home on NFS; ok dtucker@
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[ssh_config.5]
- word change, agreed w/ markus
- consistency fixes
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[scp.1 ssh.1 ssh_config.5 sftp.1]
Document RekeyLimit. Based on patch from jan.iven at cern.ch from mindrot
#1056 with feedback from jmc, djm and markus; ok jmc@ djm@
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[ssh_config.5]
refer to TCP forwarding, rather than TCP/IP forwarding;
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- jmc@cvs.openbsd.org 2006/01/02 17:09:49
[ssh_config.5 sshd_config.5]
some corrections from michael knudsen;
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[ssh_config.5]
put the description of "UsePrivilegedPort" in the correct place;
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[ssh_config.5]
spelling: intented -> intended
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[ssh_config.5 session.c]
spelling: fowarding, fowarded
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[ssh_config.5]
new sentence, new line;
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[auth-options.c includes.h misc.c misc.h readconf.c servconf.c]
[serverloop.c ssh.c ssh_config.5 sshd_config.5 configure.ac]
two changes to the new ssh tunnel support. this breaks compatibility
with the initial commit but is required for a portable approach.
- make the tunnel id u_int and platform friendly, use predefined types.
- support configuration of layer 2 (ethernet) or layer 3
(point-to-point, default) modes. configuration is done using the
Tunnel (yes|point-to-point|ethernet|no) option is ssh_config(5) and
restricted by the PermitTunnel (yes|point-to-point|ethernet|no) option
in sshd_config(5).
ok djm@, man page bits by jmc@
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[ssh_config.5]
keep options in order;
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[ssh.1 ssh_config.5]
make `!command' a little clearer;
ok reyk
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[auth-options.c auth-options.h channels.c channels.h clientloop.c]
[misc.c misc.h readconf.c readconf.h scp.c servconf.c servconf.h]
[serverloop.c sftp.c ssh.1 ssh.c ssh_config ssh_config.5 sshconnect.c]
[sshconnect.h sshd.8 sshd_config sshd_config.5]
Add support for tun(4) forwarding over OpenSSH, based on an idea and
initial channel code bits by markus@. This is a simple and easy way to
use OpenSSH for ad hoc virtual private network connections, e.g.
administrative tunnels or secure wireless access. It's based on a new
ssh channel and works similar to the existing TCP forwarding support,
except that it depends on the tun(4) network interface on both ends of
the connection for layer 2 or layer 3 tunneling. This diff also adds
support for LocalCommand in the ssh(1) client.
ok djm@, markus@, jmc@ (manpages), tested and discussed with others
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[ssh_config.5]
remove trailing whitespace;
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[ssh_config.5]
mention control socket fallback behaviour, reported by
tryponraj AT gmail.com
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[ssh_config.5 ssh.1]
mention ability to specify bind_address for DynamicForward and -D options;
bz#1077 spotted by Haruyama Seigo
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[ssh_config.5]
new sentence, new line;
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[ssh_config.5]
change BindAddress to match recent ssh -b change; prompted by markus@
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[ssh_config.5]
fix Xr and a little grammar;
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[channels.c clientloop.c clientloop.h misc.c misc.h ssh.c ssh_config.5]
implement support for X11 and agent forwarding over multiplex slave
connections. Because of protocol limitations, the slave connections inherit
the master's DISPLAY and SSH_AUTH_SOCK rather than distinctly forwarding
their own.
ok dtucker@ "put it in" deraadt@
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[ssh.c ssh_config.5]
allow ControlPath=none, patch from dwmw2 AT infradead.org; ok dtucker@
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[clientloop.c readconf.c readconf.h ssh.c ssh_config.5]
add ControlMaster=auto/autoask options to support opportunistic
multiplexing; tested avsm@ and jakob@, ok markus@
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