PowerShell

SSH Tunnel for Database Connection (such as ADO, ODBC, JDBC, etc.)

See more SSH Tunnel Examples

Demonstrates how to create an SSH tunneling client in a background thread of your application. This makes it possible to SSH tunnel database connections without the need for separate software (such as PuTTY) to be running. PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$success = $false

$tunnel = New-Object Chilkat.SshTunnel

$sshHostname = "sftp.example.com"
$sshPort = 22

# Connect to an SSH server and establish the SSH tunnel:
$success = $tunnel.Connect($sshHostname,$sshPort)
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}

# Authenticate with the SSH server via a login/password
# or with a public key.  
# This example demonstrates SSH password authentication.
$success = $tunnel.AuthenticatePw("mySshLogin","mySshPassword")
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}

# The destination host/port is the database server.
# The DestHostname may be the domain name or 
# IP address (in dotted decimal notation) of the database
# server.
$tunnel.DestPort = 1433
$tunnel.DestHostname = "myDbServer.com"

# Start accepting connections in a background thread.
# The SSH tunnels are autonomously run in a background
# thread.  There is one background thread for accepting
# connections, and another for managing the tunnel pool.
$listenPort = 3316
$success = $tunnel.BeginAccepting($listenPort)
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}

# At this point the app may connect to the database server through
# the SSH tunnel.  The database connection string would
# use "localhost" for the hostname and 3316 for the port.
# We're not going to show the database coding here,
# because it can vary depending on the API you're using
# (ADO, ODBC, OLE DB, etc. )

# This is where the application's database code would go...

# Stop the background listen/accept thread:
$waitForThreadExit = $true
$success = $tunnel.StopAccepting($waitForThreadExit)
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}

# Close the SSH tunnel (would also kick any remaining connected clients).
$success = $tunnel.CloseTunnel($waitForThreadExit)
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}