keys.
Update the list of default host key algorithms in ssh_config.5 and
sshd_config.5. Copy the description of the SecurityKeyProvider
option to sshd_config.5.
ok jmc@
OpenBSD-Commit-ID: edadf3566ab5e94582df4377fee3b8b702c7eca0
This directive has a single valid option "no-touch-required" that
causes sshd to skip checking whether user presence was tested before
a security key signature was made (usually by the user touching the
key).
ok markus@
OpenBSD-Commit-ID: 46e434a49802d4ed82bc0aa38cb985c198c407de
Mention the new key types, the ~/.ssh/id_ecdsa_sk file, ssh's
SecurityKeyProvider keyword, the SSH_SK_PROVIDER environment variable,
and ssh-keygen's new -w and -x options.
Copy the ssh-sk-helper man page from ssh-pkcs11-helper with minimal
substitutions.
ok djm@
OpenBSD-Commit-ID: ef2e8f83d0c0ce11ad9b8c28945747e5ca337ac4
by starting the list with the '^' character, e.g.
HostKeyAlgorithms ^ssh-ed25519
Ciphers ^aes128-gcm@openssh.com,aes256-gcm@openssh.com
ok djm@ dtucker@
OpenBSD-Commit-ID: 1e1996fac0dc8a4b0d0ff58395135848287f6f97
Options such as Ciphers take values that may be a list of ciphers; the
complete list, not indiviual elements, may be prefixed with a dash or plus
character to remove from or append to the default list, respectively.
Users might read the current text as if each elment took an optional prefix,
so tweak the wording from "values" to "list" to prevent such ambiguity for
all options supporting these semantics.
Fix instances missed in first commit. ok jmc@ kn@
OpenBSD-Commit-ID: 7112522430a54fb9f15a7a26d26190ed84d5e417
"unresponsive" to clarify what it checks for. Patch from jblaine at
kickflop.net via github pr#129, ok djm@.
OpenBSD-Commit-ID: 3682f8ec7227f5697945daa25d11ce2d933899e9
the "Hostname" and "X11UseLocalhost" keywords; this makes things consistent
(effectively reversing my commit of yesterday);
ok deraadt markus djm
OpenBSD-Commit-ID: 255c02adb29186ac91dcf47dfad7adb1b1e54667
control over which signature algorithms a CA may use when signing
certificates. In particular, this allows a sshd to ban certificates signed
with RSA/SHA1.
ok markus@
OpenBSD-Commit-ID: b05c86ef8b52b913ed48d54a9b9c1a7714d96bac
Most people will 1) be using modern multi-factor authentication methods
like TOTP/OATH etc and 2) be getting support for multi-factor
authentication via PAM or BSD Auth.
signature work - returns ability to add/remove/specify algorithms by
wildcard.
Algorithm lists are now fully expanded when the server/client configs
are finalised, so errors are reported early and the config dumps
(e.g. "ssh -G ...") now list the actual algorithms selected.
Clarify that, while wildcards are accepted in algorithm lists, they
aren't full pattern-lists that support negation.
(lots of) feedback, ok markus@
OpenBSD-Commit-ID: a8894c5c81f399a002f02ff4fe6b4fa46b1f3207
In ssh, when an agent fails to return a RSA-SHA2 signature when
requested and falls back to RSA-SHA1 instead, retry the signature to
ensure that the public key algorithm sent in the SSH_MSG_USERAUTH
matches the one in the signature itself.
In sshd, strictly enforce that the public key algorithm sent in the
SSH_MSG_USERAUTH message matches what appears in the signature.
Make the sshd_config PubkeyAcceptedKeyTypes and
HostbasedAcceptedKeyTypes options control accepted signature algorithms
(previously they selected supported key types). This allows these
options to ban RSA-SHA1 in favour of RSA-SHA2.
Add new signature algorithms "rsa-sha2-256-cert-v01@openssh.com" and
"rsa-sha2-512-cert-v01@openssh.com" to force use of RSA-SHA2 signatures
with certificate keys.
feedback and ok markus@
OpenBSD-Commit-ID: c6e9f6d45eed8962ad502d315d7eaef32c419dde
pattern-list of whitelisted environment variable names in addition to yes|no.
bz#1800, feedback and ok markus@
OpenBSD-Commit-ID: 77dc2b468e0bf04b53f333434ba257008a1fdf24
e.g.
PermitListen 2222 8080
is equivalent to:
PermitListen *:2222 *:8080
Some bonus manpage improvements, mostly from markus@
"looks fine" markus@
OpenBSD-Commit-ID: 6546b0cc5aab7f53d65ad0a348ca0ae591d6dd24
administrator to explicitly specify environment variables set in sessions
started by sshd. These override the default environment and any variables set
by user configuration (PermitUserEnvironment, etc), but not the SSH_*
variables set by sshd itself.
ok markus@
OpenBSD-Commit-ID: b6a96c0001ccd7dd211df6cae9e961c20fd718c0
environment variables for the remote session (subject to the server accepting
them)
refactor SendEnv to remove the arbitrary limit of variable names.
ok markus@
OpenBSD-Commit-ID: cfbb00d9b0e10c1ffff1d83424351fd961d1f2be
username is available currently. In the client this is via %i, in the server
%U (since %i was already used in the client in some places for this, but used
for something different in the server); bz#2870, ok dtucker@
OpenBSD-Commit-ID: c7e912b0213713316cb55db194b3a6415b3d4b95
interactive and CS1 for bulk
AF21 was selected as this is the highest priority within the low-latency
service class (and it is higher than what we have today). SSH is elastic
and time-sensitive data, where a user is waiting for a response via the
network in order to continue with a task at hand. As such, these flows
should be considered foreground traffic, with delays or drops to such
traffic directly impacting user-productivity.
For bulk SSH traffic, the CS1 "Lower Effort" marker was chosen to enable
networks implementing a scavanger/lower-than-best effort class to
discriminate scp(1) below normal activities, such as web surfing. In
general this type of bulk SSH traffic is a background activity.
An advantage of using "AF21" for interactive SSH and "CS1" for bulk SSH
is that they are recognisable values on all common platforms (IANA
https://www.iana.org/assignments/dscp-registry/dscp-registry.xml), and
for AF21 specifically a definition of the intended behavior exists
https://tools.ietf.org/html/rfc4594#section-4.7 in addition to the definition
of the Assured Forwarding PHB group https://tools.ietf.org/html/rfc2597, and
for CS1 (Lower Effort) there is https://tools.ietf.org/html/rfc3662
The first three bits of "AF21" map to the equivalent IEEEE 802.1D PCP, IEEE
802.11e, MPLS EXP/CoS and IP Precedence value of 2 (also known as "Immediate",
or "AC_BE"), and CS1's first 3 bits map to IEEEE 802.1D PCP, IEEE 802.11e,
MPLS/CoS and IP Precedence value 1 ("Background" or "AC_BK").
OK deraadt@, "no objection" djm@
OpenBSD-Commit-ID: d11d2a4484f461524ef0c20870523dfcdeb52181
diffie-hellman-group14-sha256
diffie-hellman-group16-sha512
diffie-hellman-group18-sha512
From Jakub Jelen via bz#2826
OpenBSD-Commit-ID: 51bf769f06e55447f4bfa7306949e62d2401907a
add a "rdomain" criteria for the sshd_config Match
keyword to allow conditional configuration that depends on which rdomain(4) a
connection was recevied on. ok markus@
Upstream-ID: 27d8fd5a3f1bae18c9c6e533afdf99bff887a4fb
add sshd_config RDomain keyword to place sshd and the
subsequent user session (including the shell and any TCP/IP forwardings) into
the specified rdomain(4)
ok markus@
Upstream-ID: be2358e86346b5cacf20d90f59f980b87d1af0f5
Add optional rdomain qualifier to sshd_config's
ListenAddress option to allow listening on a different rdomain(4), e.g.
ListenAddress 0.0.0.0 rdomain 4
Upstream-ID: 24b6622c376feeed9e9be8b9605e593695ac9091
trim permitrootlogin description somewhat, to avoid
ambiguity; original diff from walter alejandro iglesias, tweaked by sthen and
myself
ok sthen schwarze deraadt
Upstream-ID: 1749418b2bc073f3fdd25fe21f8263c3637fe5d2
Allow IPQoS=none in ssh/sshd to not set an explicit
ToS/DSCP value and just use the operating system default; ok dtucker@
Upstream-ID: 77906ff8c7b660b02ba7cb1e47b17d66f54f1f7e
