Convert from Telnet to SSL/TLS

In This Topic

You can set up applications that automatically convert Telnet sessions to secure sessions. This sample shows how to convert an IBM terminal session that is configured to connect through telnet to an SSL/TLS connection when its session document file is opened.

The sample only converts sessions that have a specific host address.

To automatically convert Telnet sessions to SSL/TLS

In Visual Studio, create a new Console Application project and add references for the following Reflection assemblies. (Depending on your version of Visual Studio, these can be found either on the .NET tab or under Assemblies | Extensions.)
Attachmate.Reflection
Attachmate.Reflection.Framework
Attachmate.Reflection.Emulation.IbmHosts

Replace all the code in the Program.cs file with the following code. This code converts IBM Telnet sessions with a specific host name to SSL/TLS sessions.

Convert Telnet to SSL/TLS	Copy Code
using System; using Attachmate.Reflection.Framework; using Attachmate.Reflection.Emulation.IbmHosts; using Attachmate.Reflection.UserInterface; namespace CreateSessionFromExistingSessionFile { class Program { //Change these placeholders for your host static string yourHostName = "yourHostName"; static string yourDomainName = "yourdomain.com"; static int yourPort = 723; //Replace with your port static public void frame_View_Opened(object sender, EventArgs args) { IFrame frame = (IFrame)sender; IView view; //wait for the view while ((view = frame.SelectedView) == null) { System.Threading.Thread.Sleep(500); } //check for the IbmTerminal type if (view.Control.ToString() == "Attachmate.Reflection.Emulation.IbmHosts.IbmTerminal") { IIbmTerminal terminal = (IIbmTerminal)view.Control; //Disconnect and disable autoconnect so we can change security settings if (terminal.IsConnected == true) { terminal.AutoConnect = false; terminal.Disconnect(); } //Only change security for sessions that connect to your host if (terminal.EnableTelnetEncryption == false && terminal.HostAddress.Trim().ToUpper().Substring(0, yourHostName.Length) == yourHostName.ToUpper()) { terminal.EnableTelnetEncryption = true; terminal.TelnetEncryptionVerifyHostName = false; terminal.TelnetEncryptionDisableCRLCheck = true; terminal.HostAddress = yourHostName + "." + yourDomainName; terminal.Port = yourPort; } terminal.Connect(); } } static void Main(string[] args) { //Start a visible instance of Reflection or get the instance running at the given channel name Application app = MyReflection.CreateApplication("myWorkspace", true); IFrame frame = (IFrame)app.GetObject("Frame"); //Handle the ViewOpened event to make sure the connection uses SSL/TLS frame.ViewOpened += new ViewEventHandler(frame_View_Opened); Console.ReadKey(); } } }

Convert Telnet to SSL/TLS

Copy Code

using System;
using Attachmate.Reflection.Framework;
using Attachmate.Reflection.Emulation.IbmHosts;
using Attachmate.Reflection.UserInterface;
namespace CreateSessionFromExistingSessionFile
{
    class Program
    {
        //Change these placeholders for your host
        static string yourHostName = "yourHostName";
        static string yourDomainName = "yourdomain.com";
        static int yourPort = 723; //Replace with your port

        static public void frame_View_Opened(object sender, EventArgs args)
        {
            IFrame frame = (IFrame)sender;
            IView view;

            //wait for the view
            while ((view = frame.SelectedView) == null)
            {
                System.Threading.Thread.Sleep(500);
            }

            //check for the IbmTerminal type
            if (view.Control.ToString() == "Attachmate.Reflection.Emulation.IbmHosts.IbmTerminal")
            {
                IIbmTerminal terminal = (IIbmTerminal)view.Control;
                //Disconnect and disable autoconnect so we can change security settings
                if (terminal.IsConnected == true)
                {
                    terminal.AutoConnect = false;
                    terminal.Disconnect();
                }

                //Only change security for sessions that connect to your host
                if (terminal.EnableTelnetEncryption == false && terminal.HostAddress.Trim().ToUpper().Substring(0, yourHostName.Length) == yourHostName.ToUpper())
                {
                    terminal.EnableTelnetEncryption = true;
                    terminal.TelnetEncryptionVerifyHostName = false;
                    terminal.TelnetEncryptionDisableCRLCheck = true;
                    terminal.HostAddress = yourHostName + "." + yourDomainName;
                    terminal.Port = yourPort;
                }
                terminal.Connect();
            }
        }

        static void Main(string[] args)
        {
            //Start a visible instance of Reflection or get the instance running at the given channel name
            Application app = MyReflection.CreateApplication("myWorkspace", true);
            IFrame frame = (IFrame)app.GetObject("Frame");

            //Handle the ViewOpened event to make sure the connection uses SSL/TLS
            frame.ViewOpened += new ViewEventHandler(frame_View_Opened);
            Console.ReadKey();
        }
    }
}

Assign the variables for yourHostName, yourDomainName, and yourPort.

To test this project

In Visual Studio, press F5 to run this project.
When Reflection opens, open an IBM Telnet session that has the host name you configured in the code.
Verify that the session has been converted to an SSL/TLS session.