Could you please tell me a bit more information for which program in your Nokia mobile do you need them (proxies)? Do you mean you need proxy server for  mobile internet browser or you have some specific program?

Could you please also explain what do you mean by "internet protocols" and "port"? The port is the number which is used by programs to communicate with that particular proxy server while internet protocol is the collection of predefined rules for some well known programs. BTW have you already read article about what is proxy port number?