Sudo vi /home/taxdoo/.ssh/authorized_keys We start by creating a new user on the Linux server: sudo adduser -shell /bin/bash -disabled-password -ingroup 'users' taxdoo Using an SSH tunnel provides you with additional security because you don’t have to make the Microsoft SQL Server publicly available.Īttached you will find my instructions for setting up a user, depositing the Taxdoo public key and everything you need to set up your Taxdoo SSH tunnel. All Rights Reserved.For a secure connection to your MSSQL server, between Taxdoo and your server, it may make sense to set up an appropriate SSH tunnel.įor logging in to your new SSH tunnel server, you should definitely prefer logging in with keys, rather than passwords. PRINT 'TCP SSH tunneling example completed.' EXEC = sp_OADestroy = sp_OADestroy Chilkat Software, Inc. EXEC sp_OAMethod 'SshCloseTunnel', OUT IF 1 PRINT = sp_OADestroy = sp_OADestroy = sp_OADestroy END EXEC = sp_OADestroy Finally, close the SSH tunnel. This is actually closing our channel - within the SSH tunnel, but keeps the tunnel open for the next port-forwarded connection. PRINT = sp_OADestroy = sp_OADestroy END - Review the LastErrorText to see that the connection was made via the SSH tunnel: EXEC sp_OAGetProperty 'LastErrorText', OUT EXEC sp_OAMethod 'SshOpenChannel', OUT, '', 37, sp_OAGetProperty 'LastMethodSuccess', OUT IF = 0 Multiple channels may coexist at the same time. PRINT = sp_OADestroy = sp_OADestroy = sp_OADestroy END EXEC = sp_OADestroy It is possible to create a new channel from the existing SSH tunnel for the next connection: - Any number of channels may be created from the same SSH tunnel. PRINT = sp_OADestroy = sp_OADestroy END DECLARE int EXEC = sp_OACreate ' Chilkat_9_5_0.CkDateTime', OUT EXEC sp_OAGetProperty 'ReceivedInt', OUT EXEC sp_OAMethod 'SetFromNtpTime', OUT, Show the current local date/time DECLARE int SELECT = 1ĮXEC sp_OAMethod 'GetAsRfc822', OUT, 'Current local date/time: ' + Close the SSH channel. DECLARE int SELECT = 1ĮXEC sp_OAMethod 'ReceiveInt32', OUT, 1 If successful, the integer - is obtained via the ReceivedInt property. The ReceiveInt32 method will receive a 4-byte integer, but returns - 1 or 0 to indicate success. PRINT = sp_OADestroy END - The time server will send a big-endian 32-bit integer representing - the number of seconds since since 00:00 (midnight) 1 January 1900 GMT. Connect to an NIST time server and read the current date/time DECLARE int DECLARE int SELECT = 4000ĮXEC sp_OAMethod 'SshOpenChannel', OUT, '', 37, sp_OAGetProperty 'LastMethodSuccess', OUT IF = 0 Any number of channels may be created from the same SSH tunnel. Once the channel is obtained, the Socket API may - be used exactly the same as usual, except all communications - are sent through the channel in the SSH tunnel. PRINT = sp_OADestroy END - OK, the SSH tunnel is setup. EXEC sp_OAMethod 'SshAuthenticatePw', OUT, 'mySshLogin', 'mySshPassword' IF 1 This example demonstrates SSH password authentication. PRINT = sp_OADestroy END - Authenticate with the SSH server via a login/password - or with a public key. Connect to an SSH server and establish the SSH tunnel: DECLARE int EXEC sp_OAMethod 'SshOpenTunnel', OUT, 1īEGIN EXEC sp_OAGetProperty 'LastErrorText', OUT DECLARE int EXEC = sp_OACreate ' Chilkat_9_5_0.Socket', OUT IF 0 BEGIN PRINT 'Failed to create ActiveX component' RETURN END DECLARE nvarchar( 4000) See Global Unlock Sample for sample code. This example requires the Chilkat API to have been previously unlocked. Important: See this note about string length limitations for strings returned by sp_OAMethod calls.ĪS BEGIN DECLARE int DECLARE int DECLARE nvarchar( 4000) The intent of this example is to show how TCP communications can occur through an SSH tunnel. The most commonly used time protocol is the Network Time Protocol (RFC-1305). Note: This is not necessarily a recommended means for getting the current date/time. This example will connect to an NIST time server and (using the old Time Protocol (RFC 868)), will read the current GMT time. (SQL Server) TCP Socket through SSH Tunnel (Port Forwarding)ĭemonstrates using Chilkat Socket to communicate to a TCP service through an SSH tunnel.
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