Internet Assigned Numbers Authority
Secure Shell (SSH) Protocol Parameters
Created
2005-06-02
Last Updated
2025-02-18
Available Formats
[IMG]
XML [IMG]
HTML [IMG]
Plain text
Registries included below
??Message Numbers
??Disconnection Messages Reason Codes and Descriptions
??Channel Connection Failure Reason Codes and Descriptions
??Extended Channel Data Transfer data_type_code and Data
??Pseudo-Terminal Encoded Terminal Modes
??Service Names
??Authentication Method Names
??Connection Protocol Channel Types
??Connection Protocol Global Request Names
??Connection Protocol Channel Request Names
??Signal Names
??Connection Protocol Subsystem Names
??Key Exchange Method Names
??Encryption Algorithm Names
??MAC Algorithm Names
??Public Key Algorithm Names
??Compression Algorithm Names
??SSH Public-Key File Header Tags
??Publickey Subsystem Request Names
??Publickey Subsystem Response Names
??Publickey Subsystem Attributes
??Publickey Subsystem Status Codes
??Extension Names
Message Numbers
Registration Procedure(s)
Standards Action
Reference
[RFC4250]
Available Formats
[IMG]
CSV
Value Message ID Reference
0 Reserved
1 SSH_MSG_DISCONNECT [RFC4253]
2 SSH_MSG_IGNORE [RFC4253]
3 SSH_MSG_UNIMPLEMENTED [RFC4253]
4 SSH_MSG_DEBUG [RFC4253]
5 SSH_MSG_SERVICE_REQUEST [RFC4253]
6 SSH_MSG_SERVICE_ACCEPT [RFC4253]
7 SSH_MSG_EXT_INFO [RFC8308]
8 SSH_MSG_NEWCOMPRESS [RFC8308]
9-19 Unassigned (Transport layer generic)
20 SSH_MSG_KEXINIT [RFC4253]
21 SSH_MSG_NEWKEYS [RFC4253]
22-29 Unassigned (Algorithm negotiation)
30-49 Reserved (key exchange method specific) [RFC4251]
50 SSH_MSG_USERAUTH_REQUEST [RFC4252]
51 SSH_MSG_USERAUTH_FAILURE [RFC4252]
52 SSH_MSG_USERAUTH_SUCCESS [RFC4252]
53 SSH_MSG_USERAUTH_BANNER [RFC4252]
54-59 Unassigned (User authentication generic)
60 SSH_MSG_USERAUTH_INFO_REQUEST [RFC4256]
61 SSH_MSG_USERAUTH_INFO_RESPONSE [RFC4256]
62-79 Reserved (User authentication method specific) [RFC4251]
80 SSH_MSG_GLOBAL_REQUEST [RFC4254]
81 SSH_MSG_REQUEST_SUCCESS [RFC4254]
82 SSH_MSG_REQUEST_FAILURE [RFC4254]
83-89 Unassigned (Connection protocol generic)
90 SSH_MSG_CHANNEL_OPEN [RFC4254]
91 SSH_MSG_CHANNEL_OPEN_CONFIRMATION [RFC4254]
92 SSH_MSG_CHANNEL_OPEN_FAILURE [RFC4254]
93 SSH_MSG_CHANNEL_WINDOW_ADJUST [RFC4254]
94 SSH_MSG_CHANNEL_DATA [RFC4254]
95 SSH_MSG_CHANNEL_EXTENDED_DATA [RFC4254]
96 SSH_MSG_CHANNEL_EOF [RFC4254]
97 SSH_MSG_CHANNEL_CLOSE [RFC4254]
98 SSH_MSG_CHANNEL_REQUEST [RFC4254]
99 SSH_MSG_CHANNEL_SUCCESS [RFC4254]
100 SSH_MSG_CHANNEL_FAILURE [RFC4254]
101-127 Unassigned (Channel related messages)
128-191 Reserved (for client protocols)
192-255 Reserved for Private Use (local extensions)
Disconnection Messages Reason Codes and Descriptions
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
SSH_MSG_DISCONNECT 'description' and 'reason code' values
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Range Registration Procedures
0x00000001-0xFDFFFFFF Expert Review
0xFE000000-0xFFFFFFFF Reserved for Private Use
Reason Code Symbolic Name Reference
0x00000000 Reserved
0x00000001 SSH_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT [RFC4253]
0x00000002 SSH_DISCONNECT_PROTOCOL_ERROR [RFC4253]
0x00000003 SSH_DISCONNECT_KEY_EXCHANGE_FAILED [RFC4253]
0x00000004 SSH_DISCONNECT_RESERVED [RFC4253]
0x00000005 SSH_DISCONNECT_MAC_ERROR [RFC4253]
0x00000006 SSH_DISCONNECT_COMPRESSION_ERROR [RFC4253]
0x00000007 SSH_DISCONNECT_SERVICE_NOT_AVAILABLE [RFC4253]
0x00000008 SSH_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED [RFC4253]
0x00000009 SSH_DISCONNECT_HOST_KEY_NOT_VERIFIABLE [RFC4253]
0x0000000A SSH_DISCONNECT_CONNECTION_LOST [RFC4253]
0x0000000B SSH_DISCONNECT_BY_APPLICATION [RFC4253]
0x0000000C SSH_DISCONNECT_TOO_MANY_CONNECTIONS [RFC4253]
0x0000000D SSH_DISCONNECT_AUTH_CANCELLED_BY_USER [RFC4253]
0x0000000E SSH_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE [RFC4253]
0x0000000F SSH_DISCONNECT_ILLEGAL_USER_NAME [RFC4253]
0x00000010-0xFDFFFFFF Unassigned
0xFE000000-0xFFFFFFFF Reserved for Private Use
Channel Connection Failure Reason Codes and Descriptions
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
'reason code' values and 'description' values
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Range Registration Procedures
0x00000001-0xFDFFFFFF Expert Review
0xFE000000-0xFFFFFFFF Reserved for Private Use
Reason Code Symbolic Name Reference
0x00000000 Reserved
0x00000001 SSH_OPEN_ADMINISTRATIVELY_PROHIBITED [RFC4254]
0x00000002 SSH_OPEN_CONNECT_FAILED [RFC4254]
0x00000003 SSH_OPEN_UNKNOWN_CHANNEL_TYPE [RFC4254]
0x00000004 SSH_OPEN_RESOURCE_SHORTAGE [RFC4254]
0x00000005-0xFDFFFFFF Unassigned
0xFE000000-0xFFFFFFFF Reserved for Private Use
Extended Channel Data Transfer data_type_code and Data
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
'data_type_code' values and 'data' values
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Range Registration Procedures
0x00000001-0xFDFFFFFF Expert Review
0xFE000000-0xFFFFFFFF Reserved for Private Use
data_type_code Symbolic Name Reference
0x00000000 Reserved
0x00000001 SSH_EXTENDED_DATA_STDERR [RFC4254]
0x00000002-0xFDFFFFFF Unassigned
0xFE000000-0xFFFFFFFF Reserved for Private Use
Pseudo-Terminal Encoded Terminal Modes
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
opcode and argument values which make up the "encoded terminal modes" values
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Opcode Argument Description Reference Note
0 TTY_OP_END Indicates end of options. [RFC4250]
1 VINTR Interrupt character; 255 if none. Similarly for the other characters. Not all of these characters are [RFC4254] Section 8
supported on all systems.
2 VQUIT The quit character (sends SIGQUIT signal on POSIX systems). [RFC4254] Section 8
3 VERASE Erase the character to left of the cursor. [RFC4254] Section 8
4 VKILL Kill the current input line. [RFC4254] Section 8
5 VEOF End-of-file character (sends EOF from the terminal). [RFC4254] Section 8
6 VEOL End-of-line character in addition to carriage return and/or linefeed. [RFC4254] Section 8
7 VEOL2 Additional end-of-line character. [RFC4254] Section 8
8 VSTART Continues paused output (normally control-Q). [RFC4254] Section 8
9 VSTOP Pauses output (normally control-S). [RFC4254] Section 8
10 VSUSP Suspends the current program. [RFC4254] Section 8
11 VDSUSP Another suspend character. [RFC4254] Section 8
12 VREPRINT Reprints the current input line. [RFC4254] Section 8
13 VWERASE Erases a word left of cursor. [RFC4254] Section 8
14 VLNEXT Enter the next character typed literally, even if it is a special character [RFC4254] Section 8
15 VFLUSH Character to flush output. [RFC4254] Section 8
16 VSWTCH Switch to a different shell layer. [RFC4254] Section 8
17 VSTATUS Prints system status line (load, command, pid, etc). [RFC4254] Section 8
18 VDISCARD Toggles the flushing of terminal output. [RFC4254] Section 8
19-29 Unassigned
30 IGNPAR The ignore parity flag. The parameter SHOULD be 0 if this flag is FALSE, and 1 if it is TRUE. [RFC4254] Section 8
31 PARMRK Mark parity and framing errors. [RFC4254] Section 8
32 INPCK Enable checking of parity errors. [RFC4254] Section 8
33 ISTRIP Strip 8th bit off characters. [RFC4254] Section 8
34 INLCR Map NL into CR on input. [RFC4254] Section 8
35 IGNCR Ignore CR on input. [RFC4254] Section 8
36 ICRNL Map CR to NL on input. [RFC4254] Section 8
37 IUCLC Translate uppercase characters to lowercase. [RFC4254] Section 8
38 IXON Enable output flow control. [RFC4254] Section 8
39 IXANY Any char will restart after stop. [RFC4254] Section 8
40 IXOFF Enable input flow control. [RFC4254] Section 8
41 IMAXBEL Ring bell on input queue full. [RFC4254] Section 8
42 IUTF8 Terminal input and output is assumed to be encoded in UTF-8. [RFC8160]
43-49 Unassigned
50 ISIG Enable signals INTR, QUIT, [D]SUSP. [RFC4254] Section 8
51 ICANON Canonicalize input lines. [RFC4254] Section 8
52 XCASE Enable input and output of uppercase characters by preceding their lowercase equivalents with "\". [RFC4254] Section 8
53 ECHO Enable echoing. [RFC4254] Section 8
54 ECHOE Visually erase chars. [RFC4254] Section 8
55 ECHOK Kill character discards current line. [RFC4254] Section 8
56 ECHONL Echo NL even if ECHO is off. [RFC4254] Section 8
57 NOFLSH Don't flush after interrupt. [RFC4254] Section 8
58 TOSTOP Stop background jobs from output. [RFC4254] Section 8
59 IEXTEN Enable extensions. [RFC4254] Section 8
60 ECHOCTL Echo control characters as ^(Char). [RFC4254] Section 8
61 ECHOKE Visual erase for line kill. [RFC4254] Section 8
62 PENDIN Retype pending input. [RFC4254] Section 8
63-69 Unassigned
70 OPOST Enable output processing. [RFC4254] Section 8
71 OLCUC Convert lowercase to uppercase. [RFC4254] Section 8
72 ONLCR Map NL to CR-NL. [RFC4254] Section 8
73 OCRNL Translate carriage return to newline (output). [RFC4254] Section 8
74 ONOCR Translate newline to carriage return-newline (output). [RFC4254] Section 8
75 ONLRET Newline performs a carriage return (output). [RFC4254] Section 8
76-89 Unassigned
90 CS7 7 bit mode. [RFC4254] Section 8
91 CS8 8 bit mode. [RFC4254] Section 8
92 PARENB Parity enable. [RFC4254] Section 8
93 PARODD Odd parity, else even. [RFC4254] Section 8
94-127 Unassigned
128 TTY_OP_ISPEED Specifies the input baud rate in bits per second. [RFC4254] Section 8
129 TTY_OP_OSPEED Specifies the output baud rate in bits per second. [RFC4254] Section 8
130-255 Unassigned
Service Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Service Name Reference
ssh-userauth [RFC4252]
ssh-connection [RFC4254]
Authentication Method Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Method Name Reference Note
publickey [RFC4252] Section 7
password [RFC4252] Section 8
hostbased [RFC4252] Section 9
none [RFC4252] Section 5.2
keyboard-interactive [RFC4256]
gssapi-with-mic [RFC4462]
gssapi-keyex [RFC4462]
gssapi [RFC4462]
external-keyx [RFC4462]
Connection Protocol Channel Types
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Channel Type Reference Note
session [RFC4254] Section 6.1
x11 [RFC4254] Section 6.3.2
forwarded-tcpip [RFC4254] Section 7.2
direct-tcpip [RFC4254] Section 7.2
Connection Protocol Global Request Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Request Type Reference Note
tcpip-forward [RFC4254] Section 7.1
cancel-tcpip-forward [RFC4254] Section 7.1
Connection Protocol Channel Request Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Request Type Reference Note
pty-req [RFC4254] Section 6.2
x11-req [RFC4254] Section 6.3.1
env [RFC4254] Section 6.4
shell [RFC4254] Section 6.5
exec [RFC4254] Section 6.5
subsystem [RFC4254] Section 6.5
window-change [RFC4254] Section 6.7
xon-xoff [RFC4254] Section 6.8
signal [RFC4254] Section 6.9
exit-status [RFC4254] Section 6.10
exit-signal [RFC4254] Section 6.10
break [RFC4335]
Signal Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Signal Reference
ABRT [RFC4254]
ALRM [RFC4254]
FPE [RFC4254]
HUP [RFC4254]
ILL [RFC4254]
INT [RFC4254]
KILL [RFC4254]
PIPE [RFC4254]
QUIT [RFC4254]
SEGV [RFC4254]
TERM [RFC4254]
USR1 [RFC4254]
USR2 [RFC4254]
Connection Protocol Subsystem Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Subsystem Name Reference
publickey [RFC4819]
snmp [RFC5592]
netconf [RFC6242]
rpki-rtr [RFC6810]
Key Exchange Method Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9142][RFC9519]
Note
*All values beginning with the specified string and not containing "@".
Note
¡°OK to Implement¡± guidance entries for registrations that pre-date
[RFC9142] are found in Table 12 in Section 4 of [RFC9142].
Note
When this registry is modified, the YANG module
"iana-ssh-key-exchange-algs" [IANA registry yang-parameters] must be
updated as defined in [RFC9644].
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Method Name Reference Note OK to Implement
diffie-hellman-group-exchange-sha1 [RFC4419][RFC8270] Section 4.1 SHOULD NOT
diffie-hellman-group-exchange-sha256 [RFC4419][RFC8270] Section 4.2 MAY
diffie-hellman-group1-sha1 [RFC4253] Section 8.1 SHOULD NOT
diffie-hellman-group14-sha1 [RFC4253] Section 8.2 MAY
diffie-hellman-group14-sha256 [RFC8268] MUST
diffie-hellman-group15-sha512 [RFC8268] MAY
diffie-hellman-group16-sha512 [RFC8268] SHOULD
diffie-hellman-group17-sha512 [RFC8268] MAY
diffie-hellman-group18-sha512 [RFC8268] MAY
ecdh-sha2-* [RFC5656] MAY
ecmqv-sha2 [RFC5656] MAY
gss-group1-sha1-* [RFC4462][RFC8732] SHOULD NOT
gss-group14-sha1-* [RFC4462][RFC8732] SHOULD NOT
gss-gex-sha1-* [RFC4462][RFC8732] SHOULD NOT
gss- [RFC4462] Section 2.6 reserved
rsa1024-sha1 [RFC4432] MUST NOT
rsa2048-sha256 [RFC4432] MAY
ext-info-s [RFC8308] Section 2 SHOULD
ext-info-c [RFC8308] Section 2 SHOULD
gss-group14-sha256-* [RFC8732] SHOULD
gss-group15-sha512-* [RFC8732] MAY
gss-group16-sha512-* [RFC8732] MAY
gss-group17-sha512-* [RFC8732] MAY
gss-group18-sha512-* [RFC8732] MAY
gss-nistp256-sha256-* [RFC8732] SHOULD
gss-nistp384-sha384-* [RFC8732] SHOULD
gss-nistp521-sha512-* [RFC8732] SHOULD
gss-curve25519-sha256-* [RFC8732] SHOULD
gss-curve448-sha512-* [RFC8732] MAY
curve25519-sha256 [RFC8731] SHOULD
curve448-sha512 [RFC8731] MAY
ecdh-sha2-nistp256 [RFC5656] SHOULD
ecdh-sha2-nistp384 [RFC5656] SHOULD
ecdh-sha2-nistp521 [RFC5656] SHOULD
sntrup761x25519-sha512 [draft-josefsson-ntruprime-ssh-02] MAY
mlkem768nistp256-sha256 [draft-kampanakis-curdle-ssh-pq-ke-04] MAY
mlkem1024nistp384-sha384 [draft-kampanakis-curdle-ssh-pq-ke-04] MAY
mlkem768x25519-sha256 [draft-kampanakis-curdle-ssh-pq-ke-04] MAY
mlkem512-sha256 [draft-harrison-mlkem-ssh-01] MAY
mlkem768-sha256 [draft-harrison-mlkem-ssh-01] MAY
mlkem1024-sha384 [draft-harrison-mlkem-ssh-01] MAY
Encryption Algorithm Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
When this registry is modified, the YANG module
"iana-ssh-encryption-algs" [IANA registry yang-parameters] must be
updated as defined in [RFC9644].
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Encryption Algorithm Name Reference Note
3des-cbc [RFC4253] Section 6.3
blowfish-cbc [RFC4253] Section 6.3
twofish256-cbc [RFC4253] Section 6.3
twofish-cbc [RFC4253] Section 6.3
twofish192-cbc [RFC4253] Section 6.3
twofish128-cbc [RFC4253] Section 6.3
aes256-cbc [RFC4253] Section 6.3
aes192-cbc [RFC4253] Section 6.3
aes128-cbc [RFC4253] Section 6.3
serpent256-cbc [RFC4253] Section 6.3
serpent192-cbc [RFC4253] Section 6.3
serpent128-cbc [RFC4253] Section 6.3
arcfour [RFC8758] HISTORIC
idea-cbc [RFC4253] Section 6.3
cast128-cbc [RFC4253] Section 6.3
none [RFC4253] Section 6.3
des-cbc [FIPS-46-3] HISTORIC, See page 4
arcfour128 [RFC8758] HISTORIC
arcfour256 [RFC8758] HISTORIC
aes128-ctr [RFC4344]
aes192-ctr [RFC4344]
aes256-ctr [RFC4344]
3des-ctr [RFC4344]
blowfish-ctr [RFC4344]
twofish128-ctr [RFC4344]
twofish192-ctr [RFC4344]
twofish256-ctr [RFC4344]
serpent128-ctr [RFC4344]
serpent192-ctr [RFC4344]
serpent256-ctr [RFC4344]
idea-ctr [RFC4344]
cast128-ctr [RFC4344]
AEAD_AES_128_GCM [RFC5647] Section 6.1
AEAD_AES_256_GCM [RFC5647] Section 6.2
chacha20-poly1305 [draft-josefsson-ssh-chacha20-poly1305-openssh-01]
MAC Algorithm Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
When this registry is modified, the YANG module "iana-ssh-mac-algs"
[IANA registry yang-parameters] must be updated as defined in
[RFC9644].
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
MAC Algorithm Name Reference Note
hmac-sha1 [RFC4253] Section 6.4
hmac-sha1-96 [RFC4253] Section 6.4
hmac-md5 [RFC4253] Section 6.4
hmac-md5-96 [RFC4253] Section 6.4
none [RFC4253] Section 6.4
AEAD_AES_128_GCM [RFC5647] Section 6.1
AEAD_AES_256_GCM [RFC5647] Section 6.2
hmac-sha2-256 [RFC6668] Section 2
hmac-sha2-512 [RFC6668] Section 2
Public Key Algorithm Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
*All values beginning with the specified string and not containing "@".
Note
When this registry is modified, the YANG module
"iana-ssh-public-key-algs" [IANA registry yang-parameters] must be
updated as defined in [RFC9644].
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Public Key Algorithm Name Public Key Format Reference Note
ssh-dss ssh-dss [RFC4253] Section 6.6
ssh-rsa ssh-rsa [RFC4253] Section 6.6
rsa-sha2-256 ssh-rsa [RFC8332] Section 3
rsa-sha2-512 ssh-rsa [RFC8332] Section 3
spki-sign-rsa spki-sign-rsa [RFC4253] Section 6.6
spki-sign-dss spki-sign-dss [RFC4253] Section 6.6
pgp-sign-rsa pgp-sign-rsa [RFC4253] Section 6.6
pgp-sign-dss pgp-sign-dss [RFC4253] Section 6.6
null null [RFC4462] Section 5
ecdsa-sha2-* ecdsa-sha2-* [RFC5656]
x509v3-ssh-dss x509v3-ssh-dss [RFC6187]
x509v3-ssh-rsa x509v3-ssh-rsa [RFC6187]
x509v3-rsa2048-sha256 x509v3-rsa2048-sha256 [RFC6187]
x509v3-ecdsa-sha2-* x509v3-ecdsa-sha2-* [RFC6187]
ssh-ed25519 ssh-ed25519 [RFC8709]
ssh-ed448 ssh-ed448 [RFC8709]
Compression Algorithm Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4250][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Compression Algorithm Name Reference Note
none [RFC4253] Section 6.2
zlib [RFC4253] Section 6.2
SSH Public-Key File Header Tags
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4716][RFC9519]
Note
Tags beginning with x- Reserved for Private Use
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Header Tag Reference Note
subject [RFC4716] Section 3.3.1
comment [RFC4716] Section 3.3.2
Publickey Subsystem Request Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4819][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Request Name Reference
version [RFC4819]
add [RFC4819]
remove [RFC4819]
list [RFC4819]
listattributes [RFC4819]
Publickey Subsystem Response Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4819][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Response Name Reference
version [RFC4819]
status [RFC4819]
publickey [RFC4819]
attribute [RFC4819]
Publickey Subsystem Attributes
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC4819][RFC9519]
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Attribute Name Reference
comment [RFC4819]
comment-language [RFC4819]
command-override [RFC4819]
subsystem [RFC4819]
x11 [RFC4819]
shell [RFC4819]
exec [RFC4819]
agent [RFC4819]
env [RFC4819]
from [RFC4819]
port-forward [RFC4819]
reverse-forward [RFC4819]
Publickey Subsystem Status Codes
Reference
[RFC4819]
Available Formats
[IMG]
CSV
Range Registration Procedures
0-191 Standards Action
192-255 Reserved for Private Use
Value Status Code Reference
0 SSH_PUBLICKEY_SUCCESS [RFC4819]
1 SSH_PUBLICKEY_ACCESS_DENIED [RFC4819]
2 SSH_PUBLICKEY_STORAGE_EXCEEDED [RFC4819]
3 SSH_PUBLICKEY_VERSION_NOT_SUPPORTED [RFC4819]
4 SSH_PUBLICKEY_KEY_NOT_FOUND [RFC4819]
5 SSH_PUBLICKEY_KEY_NOT_SUPPORTED [RFC4819]
6 SSH_PUBLICKEY_KEY_ALREADY_PRESENT [RFC4819]
7 SSH_PUBLICKEY_GENERAL_FAILURE [RFC4819]
8 SSH_PUBLICKEY_REQUEST_NOT_SUPPORTED [RFC4819]
9 SSH_PUBLICKEY_ATTRIBUTE_NOT_SUPPORTED [RFC4819]
10-191 Standards Action
192-255 Reserved
Extension Names
Registration Procedure(s)
Expert Review
Expert(s)
Peter Yee, Markus Stenberg
Reference
[RFC8308][RFC9519]
Note
Names in the Extension Names table MUST follow the Conventions for
Names defined in [RFC4250], Section 4.6.1.
Note
Registration requests should be sent to the mailing list described in
[RFC9519]. If approved, designated experts should notify IANA within
three weeks. For assistance, please contact iana@iana.org.
Available Formats
[IMG]
CSV
Extension Name Reference Note
server-sig-algs [RFC8308] Section 3.1
delay-compression [RFC8308] Section 3.2
no-flow-control [RFC8308] Section 3.3
elevation [RFC8308] Section 3.4
Licensing Terms
Presently we were in a very dark road, and at a point where it dropped suddenly between steep sides we halted in black shadow. A gleam of pale sand, a whisper of deep flowing waters, and a farther glimmer of more sands beyond them challenged our advance. We had come to a "grapevine ferry." The scow was on the other side, the water too shoal for the horses to swim, and the bottom, most likely, quicksand. Out of the blackness of the opposite shore came a soft, high-pitched, quavering, long-drawn, smothered moan of woe, the call of that snivelling little sinner the screech-owl. Ferry murmured to me to answer it and I sent the same faint horror-stricken tremolo back. Again it came to us, from not farther than one might toss his cap, and I followed Ferry down to the water's edge. The grapevine guy swayed at our side, we heard the scow slide from the sands, and in a few moments, moved by two videttes, it touched our shore. Soon we were across, the two videttes riding with us, and beyond a sharp rise, in an old opening made by the swoop of a hurricane, we entered the silent unlighted bivouac of Ferry's scouts. Ferry got down and sat on the earth talking with Quinn, while the sergeants quietly roused the sleepers to horse. Plotinus is driven by this perplexity to reconsider the whole theory of Matter.477 He takes Aristotle¡¯s doctrine as the groundwork of his investigation. According to this, all existence is divided into Matter and Form. What we know of things¡ªin other words, the sum of their differential characteristics¡ªis their Form. Take away this, and the unknowable residuum is their Matter. Again, Matter is the vague indeterminate something out of which particular Forms are developed. The two are related as Possibility to Actuality, as the more generic to the more specific substance through every grade of classification and composition. Thus there are two Matters, the one sensible and the other intelligible. The former constitutes the common substratum of bodies, the other the common element of ideas.478 The general distinction between Matter and Form was originally suggested to Aristotle by Plato¡¯s remarks on the same subject; but he differs325 from his master in two important particulars. Plato, in his Timaeus, seems to identify Matter with space.479 So far, it is a much more positive conception than the ?λη of the Metaphysics. On the other hand, he constantly opposes it to reality as something non-existent; and he at least implies that it is opposed to absolute good as a principle of absolute evil.480 Thus while the Aristotelian world is formed by the development of Power into Actuality, the Platonic world is composed by the union of Being and not-Being, of the Same and the Different, of the One and the Many, of the Limit and the Unlimited, of Good and Evil, in varying proportions with each other. The Lawton woman had heard of an officer's family at Grant, which was in need of a cook, and had gone there. [See larger version] On the 8th of July an extraordinary Privy Council was summoned. All the members, of whatever party, were desired to attend, and many were the speculations as to the object of their meeting. The general notion was that it involved the continuing or the ending of the war. It turned out to be for the announcement of the king's intended marriage. The lady selected was Charlotte, the second sister of the Duke of Mecklenburg-Strelitz. Apart from the narrowness of her education, the young princess had a considerable amount of amiability, good sense, and domestic taste. These she shared with her intended husband, and whilst they made the royal couple always retiring, at the same time they caused them to give, during their lives, a moral air to their court. On the 8th of September Charlotte arrived at St. James's, and that afternoon the marriage took place, the ceremony being performed by the Archbishop of Canterbury. On the 22nd the coronation took place with the greatest splendour. Mother and girls were inconsolable, for each had something that they were sure "Si would like," and would "do him good," but they knew Josiah Klegg, Sr., well enough to understand what was the condition when he had once made up his mind. CHAPTER V. THE YOUNG RECRUITS Si proceeded to deftly construct a litter out of the two guns, with some sticks that he cut with a knife, and bound with pawpaw strips. His voice had sunk very low, almost to sweetness. A soft flurry of pink went over her face, and her eyelids drooped. Then suddenly she braced herself, pulled herself taut, grew combative again, though her voice shook. HoME²Ô¾®Ïè̫ʲôÐÇ×ù
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