diff options
Diffstat (limited to 'ssh_config.5')
| -rw-r--r-- | ssh_config.5 | 72 |
1 files changed, 62 insertions, 10 deletions
diff --git a/ssh_config.5 b/ssh_config.5 index 268a627b2bc0..5b0975f87e2f 100644 --- a/ssh_config.5 +++ b/ssh_config.5 @@ -33,8 +33,8 @@ .\" (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: ssh_config.5,v 1.211 2015/06/02 09:10:40 djm Exp $ -.Dd $Mdocdate: June 2 2015 $ +.\" $OpenBSD: ssh_config.5,v 1.214 2015/07/30 00:01:34 djm Exp $ +.Dd $Mdocdate: July 30 2015 $ .Dt SSH_CONFIG 5 .Os .Sh NAME @@ -373,6 +373,11 @@ The default is Specifies the ciphers allowed for protocol version 2 in order of preference. Multiple ciphers must be comma-separated. +If the specified value begins with a +.Sq + +character, then the specified ciphers will be appended to the default set +instead of replacing them. +.Pp The supported ciphers are: .Pp .Bl -item -compact -offset indent @@ -781,9 +786,21 @@ is similar to .It Cm HostbasedKeyTypes Specifies the key types that will be used for hostbased authentication as a comma-separated pattern list. -The default -.Dq * -will allow all key types. +Alternately if the specified value begins with a +.Sq + +character, then the specified key types will be appended to the default set +instead of replacing them. +The default for this option is: +.Bd -literal -offset 3n +ecdsa-sha2-nistp256-cert-v01@openssh.com, +ecdsa-sha2-nistp384-cert-v01@openssh.com, +ecdsa-sha2-nistp521-cert-v01@openssh.com, +ssh-ed25519-cert-v01@openssh.com, +ssh-rsa-cert-v01@openssh.com, +ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521, +ssh-ed25519,ssh-rsa +.Ed +.Pp The .Fl Q option of @@ -792,16 +809,19 @@ may be used to list supported key types. .It Cm HostKeyAlgorithms Specifies the protocol version 2 host key algorithms that the client wants to use in order of preference. +Alternately if the specified value begins with a +.Sq + +character, then the specified key types will be appended to the default set +instead of replacing them. The default for this option is: .Bd -literal -offset 3n ecdsa-sha2-nistp256-cert-v01@openssh.com, ecdsa-sha2-nistp384-cert-v01@openssh.com, ecdsa-sha2-nistp521-cert-v01@openssh.com, ssh-ed25519-cert-v01@openssh.com, -ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com, -ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com, +ssh-rsa-cert-v01@openssh.com, ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521, -ssh-ed25519,ssh-rsa,ssh-dss +ssh-ed25519,ssh-rsa .Ed .Pp If hostkeys are known for the destination host then this default is modified @@ -974,14 +994,17 @@ and .It Cm KexAlgorithms Specifies the available KEX (Key Exchange) algorithms. Multiple algorithms must be comma-separated. +Alternately if the specified value begins with a +.Sq + +character, then the specified methods will be appended to the default set +instead of replacing them. The default is: .Bd -literal -offset indent curve25519-sha256@libssh.org, ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521, diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, -diffie-hellman-group14-sha1, -diffie-hellman-group1-sha1 +diffie-hellman-group14-sha1 .Ed .Pp The list of available key exchange algorithms may also be obtained using the @@ -1063,10 +1086,16 @@ in order of preference. The MAC algorithm is used in protocol version 2 for data integrity protection. Multiple algorithms must be comma-separated. +If the specified value begins with a +.Sq + +character, then the specified algorithms will be appended to the default set +instead of replacing them. +.Pp The algorithms that contain .Dq -etm calculate the MAC after encryption (encrypt-then-mac). These are considered safer and their use recommended. +.Pp The default is: .Bd -literal -offset indent umac-64-etm@openssh.com,umac-128-etm@openssh.com, @@ -1207,6 +1236,29 @@ will pass a connected file descriptor back to instead of continuing to execute and pass data. The default is .Dq no . +.It Cm PubkeyAcceptedKeyTypes +Specifies the key types that will be used for public key authentication +as a comma-separated pattern list. +Alternately if the specified value begins with a +.Sq + +character, then the key types after it will be appended to the default +instead of replacing it. +The default for this option is: +.Bd -literal -offset 3n +ecdsa-sha2-nistp256-cert-v01@openssh.com, +ecdsa-sha2-nistp384-cert-v01@openssh.com, +ecdsa-sha2-nistp521-cert-v01@openssh.com, +ssh-ed25519-cert-v01@openssh.com, +ssh-rsa-cert-v01@openssh.com, +ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521, +ssh-ed25519,ssh-rsa +.Ed +.Pp +The +.Fl Q +option of +.Xr ssh 1 +may be used to list supported key types. .It Cm PubkeyAuthentication Specifies whether to try public key authentication. The argument to this keyword must be |