VBScript

SSH Tunnel Uncommon Options

Demonstrates the UncommonOptions property, which enables optional behavior for uncommon requirements. The default is an empty string; provide a comma-separated list of keywords to enable more than one option. Available keywords are listed in the reference documentation.

Background: This is a catch-all for narrow workarounds that do not warrant their own properties — forcing a specific signature algorithm, disabling the periodic keep-alive, removing weak MACs, bypassing a VPN on Android, and so on. Most applications never set it. When you do, it is usually to satisfy a particular server's quirk or a specific security requirement, and the exact keyword matters, so consult the documented list rather than guessing.

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VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

'  Demonstrates the SshTunnel.UncommonOptions property, which enables optional behavior for
'  uncommon requirements.  The default is an empty string, appropriate for most applications.
'  Provide a comma-separated list of keywords to enable more than one option.

set tunnel = CreateObject("Chilkat.SshTunnel")

'  For example, disable the periodic keep-alive ignore message and remove weak MAC algorithms
'  from those offered.  Available keywords are listed in the reference documentation.
tunnel.UncommonOptions = "NoKeepAliveIgnoreMsg,no-weak-mac-algs"

tunnel.DestHostname = "db.internal.example.com"
tunnel.DestPort = 5432

sshPort = 22
success = tunnel.Connect("ssh.example.com",sshPort)
If (success = 0) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If

'  Normally you would not hard-code the password in source.  You should instead obtain it
'  from an interactive prompt, environment variable, or a secrets vault.
password = "mySshPassword"

success = tunnel.AuthenticatePw("mySshLogin",password)
If (success = 0) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If

listenPort = 1080
success = tunnel.BeginAccepting(listenPort)
If (success = 0) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("Tunnel established.")

waitForThreadExit = 1
success = tunnel.CloseTunnel(waitForThreadExit)
If (success = 0) Then
    outFile.WriteLine(tunnel.LastErrorText)
    WScript.Quit
End If


outFile.Close