Getting Started > Setting Client Preferences > Connection Preferences > To configure proxy preferences in the CLI
  
To configure proxy preferences in the CLI
From the CLI, type the following command:
im/si diag
[--diag=setproxy]
[--param=serverhostname:serverport]
[--param=proxyhostname:proxyport]
[--target=client]
where:
--param=serverhostname:serverport specifies the name and port number of the server used by the proxy server.
--param=proxyhostname:proxyport specifies the name and port number of the proxy server.
* 
If only one parameter is specified, proxy information for the specified server ID is removed from the preferences.