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New Comment on "Draft for Documentation page"

tux007 — Tue, 12 Mar 2013 01:28:50 GMT

Well, your Connection is not established. I had the same problem. Maybe it the remote Host does only accept key interactive authentification, or key based authentification.

New Comment on "ExampleSftpMultipleUploadDownload"

tux007 — Tue, 12 Mar 2013 00:50:30 GMT

This is a nice link. too. http://sshnet.codeplex.com/wikipage?title=Draft%20for%20Documentation%20page

New Comment on "Draft for Documentation page"

tcboring — Thu, 07 Mar 2013 16:05:47 GMT

Using the "Download File" sample above, I get this exception: [SshAuthenticationException: No suitable authentication method found to complete authentication.] Renci.SshNet.ConnectionInfo.Authenticate(Session session) +760 Renci.SshNet.Session.Connect() +1474 Renci.SshNet.BaseClient.Connect() +270 gov.sbcounty.gis.GESecurity.Services.TestSSHNet.TestSSHNetButton_Click(Object sender, EventArgs e) in d:\ISD-VM-PTFS02\ADCollection2\T0250 ISD Google Earth Security\Source\TRUNK-DEV\ISD Google Earth Security Services\TestSSHNet.aspx.cs:33 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +155 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3804 I'm using the latest build of SSH.NET, through a NuGet Reference.

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:22:32 GMT

Introduction
This project was inspired by Sharp.SSH library which was ported from java and it seems like was not supported for quite some time. This library is complete rewrite using .NET 4.0, without any third party dependencies and to utilize the parallelism as much as possible to allow best performance I can get.

Features

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Samples and Documentation
SshClient.chm

If you have any problems or comments please let me know, if you think its a bug please log it in issue tracker and I will try to address it as quick as possible.

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:21:35 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:19:49 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:16:37 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:14:59 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Samples and Documentation
SshClient.chm

Cannot resolve image macro, invalid image name or id.
If you have any problems or comments please let me know, if you think its a bug please log it in issue tracker and I will try to address it as quick as possible.

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:12:50 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Sun, 24 Feb 2013 00:11:49 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Mon, 28 Jan 2013 20:51:30 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote, dynamic and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Mon, 28 Jan 2013 20:50:46 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Updated Wiki: Home

olegkap — Mon, 28 Jan 2013 20:49:40 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc, cast128-cbc, arcfour and twofish encryptions.
Supports hmac-md5, hmac-sha1, hmac-ripemd160, hmac-sha2-256, hmac-sha2-256-96, hmac-md5-96 and hmac-sha1-96 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

Samples and Documentation
Cannot resolve file macro, invalid file name or id.

If you have any problems or comments please let me know, if you think its a bug please log it in issue tracker and I will try to address it as quick as possible.

Updated Wiki: Documentation

olegkap — Tue, 08 Jan 2013 18:03:38 GMT

Notice: This wiki is a work in progress and may contain dead-links or inaccurate information. Do not file any issues until this notice is removed.

How to enhance debugging experience with SSH.NET
Troubleshooting SSH.NET
Download the SSH.NET API documentation Updated: 2013-01-08

The following is a list of links that might be useful.

Performing Asynchronous Work, or Tasks, in ASP.NET Applications

Problems using the CHM file on Windows 7 or Windows 8

Windows 7
The CHM file, at least in windows 7, when downloaded, will show broken links and empty pages unless you unblock the file.

Right click on: SshClient.chm # two
Near the bottom of the dialog on the right, you will see an "Unblock" button. Click it!

Windows 8
Start PowerShell and use this command: Unblock-File .\SshNet.chm
Note, you can move to directories like you can in Command Prompt.
Source (superuser.com)

Updated Wiki: Documentation

olegkap — Tue, 08 Jan 2013 18:03:20 GMT

Notice: This wiki is a work in progress and may contain dead-links or inaccurate information. Do not file any issues until this notice is removed.

How to enhance debugging experience with SSH.NET
Troubleshooting SSH.NET
Download the SSH.NET API documentation Updated: 2012-09-12

The following is a list of links that might be useful.

Performing Asynchronous Work, or Tasks, in ASP.NET Applications

Problems using the CHM file on Windows 7 or Windows 8

Windows 7
The CHM file, at least in windows 7, when downloaded, will show broken links and empty pages unless you unblock the file.

Right click on: SshClient.chm # two
Near the bottom of the dialog on the right, you will see an "Unblock" button. Click it!

Windows 8
Start PowerShell and use this command: Unblock-File .\SshNet.chm
Note, you can move to directories like you can in Command Prompt.
Source (superuser.com)

Updated Wiki: Documentation

olegkap — Tue, 08 Jan 2013 18:00:38 GMT

Notice: This wiki is a work in progress and may contain dead-links or inaccurate information. Do not file any issues until this notice is removed.

How to enhance debugging experience with SSH.NET
Troubleshooting SSH.NET
Download the SSH.NET API documentation Updated: 2012-09-12

The following is a list of links that might be useful.

Performing Asynchronous Work, or Tasks, in ASP.NET Applications

Problems using the CHM file on Windows 7 or Windows 8

Windows 7
The CHM file, at least in windows 7, when downloaded, will show broken links and empty pages unless you unblock the file.

Right click on: SshClient.chm # two
Near the bottom of the dialog on the right, you will see an "Unblock" button. Click it!

Windows 8
Start PowerShell and use this command: Unblock-File .\SshNet.chm
Note, you can move to directories like you can in Command Prompt.
Source (superuser.com)

Updated Wiki: Home

olegkap — Thu, 20 Dec 2012 21:28:49 GMT

Execution of SSH command using both synchronous and asynchronous methods
Return command execution exit status and other information
Provide SFTP functionality for both synchronous and asynchronous operations.
Provides SCP functionality.
Provide status report for upload and download sftp operations to allow accurate progress bar implementation
Remote and local port forwarding
Shell/Terminal implementation.
Specify key file pass phrase
Use multiple key files to authenticate
Supports diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1 and diffie-hellman-group1-sha1 key exchange methods.
Supports 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, blowfish-cbc and cast128-cbc encryptions.
Supports hmac-md5 and hmac-sha1 hashing algorithms.
Supports publickey, password and keyboard-interactive authentication methods
Supports RSA and DSA private key
Supports DES-EDE3-CBC, DES-EDE3-CFB, DES-CBC, AES-128-CBC, AES-192-CBC and AES-256-CBC algorithms for private key encryption.
Supports two-factor or higher authentication
Supports .NET 3.5, Silverlight and Windows Phone
Supports SOCKS4, SOCKS5 and HTTP Proxy

Code Samples
Sample code can be found by looking at the test cases included in the source code. Make sure you read the code for tests that is not expected to fail.

Future Features

Compression support

New Comment on "Documentation"

smccoy78 — Thu, 04 Oct 2012 17:59:04 GMT

For issues with the SshClient.chm right-click on the file and select properties. The unblock option will be at the bottom of the properties window. Click unblock and apply and that is it.

Updated Wiki: Troubleshooting SSH.NET

Kenneth_aa — Fri, 14 Sep 2012 15:31:29 GMT

Troubleshooting SSH.NET

If you encounter problems using the library, use this page as a reference on how to try find the source of the problem.

Please ensure you are using the latest release of SSH.NET. If you are already using the latest release, then download and compile the latest Source Code. Don't forget to update your project(s) reference(s).

You may also find How to enhance debugging experience with SshNet useful.

Table of Contents

Template for submitting an issue report
How to narrow your problem down
1. Frequently experienced SSH.NET exceptions
2. System.Net.Socket exceptions
3. .NET TraceSource and TraceListeners
SSH server assisted troubleshooting
1. Log files
2. Debugging mode
  1. Debug level
  2. Foreground process
Unsupported remote systems
1. Watchguard Firewall

Template for submitting an issue report

Before you submit an issue report, please ensure you are using the latest release of SSH.NET. If you are already using the latest release, then download and compile the latest Source Code. Don't forget to update your project(s) reference(s).

Additionally, try to narrow down the problem by creating a very simple example that reproduces the problem you have. This is an important step, because it will eliminate most issues relating from other code that might influence the behavior of SSH.NET

Please use this template when submitting a new issue report. It will provide the necessary details for a more precise understanding of the problem you have.

Just copy everything between the 2 lines and paste them into the Create Issue Description textbox.

Remote Server Information

Remote SSH Server version:

Remote Operating System distribution name and architecture (x32/x64):

What kind of access do you have?:

Does Putty/WinSCP work?:

Local Machine Information

Operating System (for Windows, run winver.exe):

.NET Framework versions installed (See C:\WINDOWS\Microsoft.Net\Framework):

Project information

What is your Target Framework set to, and architecture (x32/x64)?: 

Is your project multi-threaded/complex?:

.NET Framework or Mono?:

Source Code

Sample Code:

Exceptions and Stack Trace/Call Stack:

File transfer related

Transfer over LAN or Internet?:

File size in Bytes:

Uploading or Downloading?

Does remote server have enough space to store the file?

Do you have access to the file being uploaded or downloaded?

How to narrow your problem down

By creating the simplest possible code that reproduce the problem you are having, it will be easier to debug and to pinpoint exactly where and why the problem is happening. So take some time to create code that can reproduce the problem.

Frequently experienced SSH.NET exceptions

"Key exchange negotiation failed"

The client and the server cannot find a common algoritm for exchanging keys.

To find out what kind of algoritms the server supports, you can put a breakpoint in the Start(Session, KeyExchangeInitMessage)-method in Security\KeyExchange.cs.

"No suitable authentication method found to complete authentication."

The server is expecting a password/key authentication, but the client is sending a key/password, or an authentication mechanism that is not commonly supported by both client and server.

System.Net.Socket exceptions

Sometimes the server doesn't know what to do, and it just closes the connection and you'll get either of these exceptions

An existing connection was forcibly closed by the remote host

If you get any of the following exception descriptions, it might be a problem on the computer you are running the program from, or the network you are on, and you should try your program on a different computer and network.

A blocking operation was interrupted by a call to WSACancelBlockingCall
Connection was lost
A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied

.NET TraceSource and TraceListeners

SSH.NET contains some tracing functionality, but at the time of writing, this is very limited.

The XML samples here should be put in the app.exe.config under configuration -> system.diagnostics-element.

The samples here are based on samples posted in Durgaprasad Gorti's WebLog at Using System.Net Tracing

System.Net.Sockets

The System.Net.Sockets namespace has some tracing options, this is how you enable it.

<?xml version="1.0" encoding="UTF-8" ?>
<configuration>
    <system.diagnostics>
        <trace autoflush="true" />
            <sources>
                <source name="System.Net.Sockets" maxdatasize="1024">
                    <listeners>
                        <add name="MyTraceFile"/>
                    </listeners>
                </source>
                <source name="System.Net" maxdatasize="1024">
                    <listeners>
                        <add name="MyTraceFile"/>
                    </listeners>
                </source>
            </sources>

            <sharedListeners>
                <add
                  name="MyTraceFile"
                  type="System.Diagnostics.TextWriterTraceListener"
                  initializeData="SshNetTrace.log"
                />
            </sharedListeners>

            <switches>
                <add name="System.Net" value="Verbose" />
                <add name="System.Net.Sockets" value="Info" />
            </switches>

    </system.diagnostics>
</configuration>

SSH server assisted troubleshooting

References

Run sshd in debugging mode. (fixunix.com)

Log files

Sample command for reading sshd related messages from /var/log/messages:

cat /var/log/messages | grep "$(date '+%b %_d')" | grep sshd

Debugging mode

You can configure your SSH server to run in debugging mode, this will cause more extensive logging depending on the debug level.

Before you make changes to configuration files, make sure you have a backup of the original.

Also remember that if you stop the SSH server you are disconnected from the remote host.

Debug level

This method will increase the debug output from the SSH server to the log file.

Open /etc/ssh/sshd_config and locate LogLevel, this is usually set to INFO. Change it to DEBUG1, DEBUG2 or DEBUG3 for maximum detail, but you should start with DEBUG1 and move upwards.

Foreground process

This method will cause the SSH server to run in the foreground and not run as a background process. This method should only be used if you have physical access to the machine.

Unsupported remote systems

In some cases there are systems that SSH.NET cannot be used with. Here is the ones that are known to not work

Watchguard Firewall

New Comment on "Documentation"

platzh1rsch — Wed, 12 Sep 2012 11:48:26 GMT

I don't see this "Unblock" button on my Windows 7 .. ?