- It is important to distinguish the Secure Shell (SSH) protocol version from the SSH File Transfer Protocol (SFTP) version, and each of these from the more granular SSH library implementation version. Secure Shell (SSH) Protocol. The SSH protocol has a variety of versions which are grouped into the following two categories.
- As used herein, “this License” refers to version 3 of the GNU Lesser General Public License, and the “ GNU GPL ” refers to version 3 of the GNU General Public License. “The Library” refers to a covered work governed by this License, other than an Application or a Combined Work as defined below.
OpenSSH is the open-source version of the Secure Shell (SSH) tools used by administrators of Linux and other non-Windows for cross-platform management of remote systems.OpenSSH has been added to Windows as of autumn 2018, and is included in Windows 10 and Windows Server 2019.
OpenSSH is the open-source version of the Secure Shell (SSH) tools used by administrators of Linux and other non-Windows for cross-platform management of remote systems. OpenSSH has been added to Windows as of autumn 2018, and is included in Windows 10 and Windows Server 2019. I have just installed version 3.5.3 and is now unable to SSH. My command is sudo ssh pi@192.168.0.10 I am prompted for a password but flightaware (or any other password) will not work. In the previous version 3.5.1 it all worked just fine. Any suggestions? Changes made in version 3.13(Apr 15, 2004) Added International Domain Name support (IDNA). Check out Verisign for more info; Added ssh-break command to SSH2 to support break signals across an SSH connection (ctrl-break key activates it)) Fixed several small bugs introduced in 3.11; Changes made in version 3.11(Apr 10, 2004).
SSH is based on a client-server architecture where the system the user is working on is the client and the remote system being managed is the server.OpenSSH includes a range of components and tools designed to provide a secure and straightforward approach to remote system administration, including:
- sshd.exe, which is the SSH server component that must be running on the system being managed remotely
- ssh.exe, which is the SSH client component that runs on the user's local system
- ssh-keygen.exe generates, manages and converts authentication keys for SSH
- ssh-agent.exe stores private keys used for public key authentication
- ssh-add.exe adds private keys to the list allowed by the server
- ssh-keyscan.exe aids in collecting the public SSH host keys from a number of hosts
- sftp.exe is the service that provides the Secure File Transfer Protocol, and runs over SSH
- scp.exe is a file copy utility that runs on SSH
Documentation in this section focuses on how OpenSSH is used on Windows, including installation, and Windows-specific configuration and use cases. Here are the topics:
Additional detailed documentation for common OpenSSH features is available online at OpenSSH.com.
The master OpenSSH open source project is managed by developers at the OpenBSD Project.The Microsoft fork of this project is in GitHub.Feedback on Windows OpenSSH is welcomed and can be provided by creating GitHub issues in our OpenSSH GitHub repo.
Windows 10 Native Ssh Client
SFTP status/error codes are a numerical codes that an SFTP server1 uses to indicate a result of a client request (i.e. a request sent by WinSCP to the server).
WinSCP translates the numerical codes to a textual description for you, so you do not have to remember them.
The SFTP server should also provide a meaningful textual description of the error itself. WinSCP includes the server-side description in its error message, labeled “Error message from server”. Such description can include more detailed information than WinSCP can possibly deduce from the numerical code.
Note that not all servers use all codes. Most SSH/SFTP servers, including the most commonly used OpenSSH, support only SFTP version 3 that defines only codes 0 to 8.
These servers would generally use code 4 (Failure) for many errors for which there is a specific code defined in the later versions of SFTP protocol, such as:
- Renaming a file to a name of already existing file.
- Creating a directory that already exists.
- Moving a remote file to a different filesystem (HDD).
- Uploading a file to a full filesystem (HDD).
- Exceeding a user disk quota.
In this case the server is required to provide meaningful description of the error itself (see above). Unfortunately, OpenSSH SFTP server uses always description “Failure”. Is such case, there is unfortunately no way to tell a reason of the failure.
Ssh Version 3 Port
| Code | Name | Description | Comment |
|---|---|---|---|
0 | OK | Indicates successful completion of the operation. | |
1 | EOF | An attempt to read past the end-of-file was made; or, there are no more directory entries to return. | |
2 | No such file | A reference was made to a file which does not exist. | |
3 | Permission denied | The user does not have sufficient permissions to perform the operation. | |
4 | Failure | An error occurred, but no specific error code exists to describe the failure. This error message should always have meaningful text in the the error message field. | See above. |
5 | Bad message | A badly formatted packet or other SFTP protocol incompatibility was detected. | |
6 | No connection | There is no connection to the server. This error may be used locally, but must not be return by a server. | WinSCP does not use the code. |
7 | Connection lost | The connection to the server was lost. This error may be used locally, but must not be return by a server. | WinSCP does not use the code. |
8 | Operation unsupported | An attempted operation could not be completed by the server because the server does not support the operation. It may be returned by the server if the server does not implement an operation. | |
9 | Invalid handle | The handle value was invalid. | |
10 | No such path | The file path does not exist or is invalid. | |
11 | File already exists | The file already exists. | |
12 | Write protect | The file is on read-only media, or the media is write protected. | |
13 | No media | The requested operation cannot be completed because there is no media available in the drive. | |
14 | No space on file-system | The requested operation cannot be completed because there is insufficient free space on the filesystem. | |
15 | Quota exceeded | The operation cannot be completed because it would exceed the user’s storage quota. | |
16 | Unknown principal | A principal referenced by the request (either the owner, group, or who field of an ACL), was unknown. | |
17 | Lock conflict | The file could not be opened because it is locked by another process. | |
18 | Directory not empty | The directory is not empty. | |
19 | Not a directory | The specified file is not a directory. | |
20 | Invalid filename | The filename is not valid. | |
21 | Link loop | Too many symbolic links encountered or, an SSH_FXF_NOFOLLOW open encountered a symbolic link as the final component | |
22 | Cannot delete | The file cannot be deleted. One possible reason is that the advisory read-only attribute-bit is set. | |
23 | Invalid parameter | One of the parameters was out of range, or the parameters specified cannot be used together. | |
24 | File is a directory | The specified file was a directory in a context where a directory cannot be used. | |
25 | Range lock conflict | A read or write operation failed because another process’s mandatory byte-range lock overlaps with the request. | WinSCP does not use byte range locking. |
26 | Range lock refused | A request for a byte range lock was refused. | WinSCP does not use byte range locking. |
27 | Delete pending | An operation was attempted on a file for which a delete operation is pending. | |
28 | File corrupt | The file is corrupt; an filesystem integrity check should be run. | |
29 | Owner invalid | The principal specified can not be assigned as an owner of a file. | |
30 | Group invalid | The principal specified can not be assigned as the primary group of a file. | |
31 | No matching byte range lock | The requested operation could not be completed because the specified byte range lock has not been granted. | WinSCP does not use byte range locking. |
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- Status response section of
draft-ietf-secsh-filexfer-13; - SFTP specifications list in “History and development” section of SSH File Transfer Protocol.
- Exception are codes
6and7that intended to by used by client. But WinSCP never uses these.Back