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Set up a SOCKS or HTTP Proxy Server Session

You can configure sessions to connect through a SOCKS proxy server or an HTTP server.


  • SOCKS is supported for VT, 3270, and 5250 terminals.
  • HTTP is supported only for VT terminals.

Before you start

Make sure your system has a proxy server or servers and that you know the following information:

  • If you are setting up a connection to a SOCKS server, know the proxy server address and protocol version.
  • If you are setting up a connection to an HTTP server, know the proxy server address and port.

To set up a session to connect through a SOCKS proxy server or an SSL/TLS server

  1. From the Quick Access toolbar, click the Save New Document button.
  2. From the Create New Document dialog box, select a document template and click Create.
  3. In the Create New Terminal Document dialog box, under Connection, enter the Host name/IP address.
  4. Click Configure additional settings and then click OK.
  5. In the Settings dialog box, under Host Connection, click Setup Connection Security.
  6. If you are configuring a 3270 or 5250 terminal session, in the Configure Advanced Connection Settings dialog box, Under Security, click Security Settings.
  7. On the Security Properties dialog box Proxy tab, select Use proxy server and then select the proxy type:
  • SOCKS (supported for VT, 3270, and 5250 terminals).
  • HTTP (supported only for VT).
  1. Click Configure to open the Configuration dialog box.
  2. If you want to designate only one HTTP proxy server, configure the session for the proxy server as follows:

    To configure…

    Do this


    Enter the Server address and the Protocol version.


    Enter the server Address and Port.

    If you want to use authentication that requires a user name and password, select Basic authentication and enter the user name for the proxy server. (If this is not selected, no authentication is used.)

  3. If you want to configure more than one proxy server or configure specific destination routes, leave the fields in the HTTP (or SOCKS) proxy group blank and click Advanced.