Configuring for a proxy

Two main types of firewalls exist: packet filtering firewalls and proxy servers. If a proxy server must be negotiated for a direct internet connection, the Cleo Harmony, Cleo VLTrader, and Cleo LexiCom applications support FTP, HTTP, and SMTP application-level proxies.

If you are unsure if you need to configure an HTTP proxy, check your browser to see if it is configured to use a proxy. See your browser's documentation for more information.

If you are still unsure of whether a proxy needs to be configured, contact your local network administrator.

An FTP proxy can only be used by FTP hosts and an SMTP proxy can only be used by SMTP hosts, while an HTTP proxy can be used by most of the host types. If all or most of your remote FTP hosts will be accessed thru the same proxy, consider specifying a Default FTP Forward Proxy. Likewise for FTP/s, HTTP, HTTP/s, and SMTP hosts. If necessary, the default forward proxy can be overridden within a specific host.

In the web UI, go to Administration > Network > Proxies. In the native UI, select Configure > Proxies in the menu bar.
Configure a new HTTP(/s) proxy that uses the Cleo VLProxy application.
1. Click New VLProxy.
  A Cleo VLProxy configuration dialog box appears.
2. Provide the information to configure the Cleo VLProxy instance and then click OK.
  See Cleo VLProxy configuration reference for more information.
Configure an FTP proxy.
1. Click New FTP Proxy.
  The FTP Application-Level Proxy dialog box appears.
2. Provide the information to configure the new FTP proxy instance and then click OK.
  See FTP proxy configuration reference for more information.
Configure an HTTP(/s) proxy that does not use Cleo VLProxy
1. Click New HTTP Proxy.
  The HTTP Application-Level Proxy dialog box appears.
2. Provide the information to configure the new HTTP proxy instance and then click OK.
  See HTTP proxy configuration reference for more information.
Configure an SMTP proxy.
1. Click New SMTP Proxy.
  The SMTP Application-Level Proxy dialog box appears.
2. Provide the information to configure the new SMTP proxy instance and then click OK.
  See SMTP proxy configuration reference for more information.
Configure a SOCKS proxy.
You can use a SOCKS proxy as a forward proxy for all remote hosts except fasp, MLLP, MQ Series, and SMTP.
1. Click New SOCKS Proxy.
  The SOCKS Application-Level Proxy dialog box appears.
2. Provide the information to configure the new SOCKS proxy instance and then click OK.
  See SOCKS proxy configuration reference for more information.
Optional - Specify default forward proxies.
A default proxy is useful when all or most of your remote hosts for a given protocol use the same proxy. You can select a default proxy for FTP, FTP/s, HTTP, HTTP/s, and SMTP.

Select a forward proxy from the menu appropriate for the protocol. Each menu is populated proxies you have already configured.
Optional - Select an SMTP mail server from the SMTP Mail Server.
The SMTP Mail Server menu is populated with SMTP proxies you have already configured.

If the mail server requires SMTP authentication, select either plain or login authentication for the SMTP proxy to enable the username and password fields. See SMTP proxy configuration reference. If you are not sure of these values, contact your network administrator.

Note: The selected proxy authentication setting is ignored during authentication with the mail server. Instead, the authentication mechanism used is the first available authentication mechanism in the mail server.

If you select None in the SMTP Mail Server field, the Cleo Harmony, Cleo VLTrader, or Cleo LexiCom application will attempt to derive the SMTP mail server based on the destination email address.

Click Test to verify that the Cleo Harmony, Cleo VLTrader, or Cleo LexiCom application is able to successfully send email alerts whether the SMTP Mail Server has been defined or not.
Once configured, select the SMTP mail server from the list of available SMTP proxies:

An FTP proxy can only be used by FTP hosts and an SMTP proxy can only be used by SMTP hosts, while an HTTP proxy can be used by most of the host types. If all or most of your remote FTP hosts will be accessed thru the same proxy, then set the Default FTP Forward Proxy. Likewise for FTP/s, HTTP, HTTP/s, and SMTP hosts. If necessary, the default forward proxy can be overridden within a specific host.