Connecting to a host system through a proxy server

Z and I Emulator for Web clients can use a proxy server to transparently access host systems from behind a firewall. Two types of proxy servers are supported:

• Socks proxy servers, described in Connecting through a Socks proxy server. Both version 4 and version 5 of Socks are supported.
• HTTP proxy servers, described in Connecting through an HTTP proxy server.

Before you can connect to a host system through a proxy server, you need to find out which protocol the proxy server supports. Decide whether you want to specify the proxy server settings through the Web browser or explicitly identify a proxy server for the session. If you decide to explicitly identify a proxy server, you need to specify the protocol that the proxy server uses, the proxy server name and port number, and other information.

In general, if a Socks proxy server is available, configure Z and I Emulator for Web sessions to use it. Configure sessions to use an HTTP proxy server if that is the only type of proxy server supported at your site.