`` so , using this little piece of code '' rodriguez flicked to another screen , '' i entered the details and the calling line identities of the internet cafs into my network probes and snifferssorry , am i going too fast ? the cli is basically the telephone number from where the dial-up modems call when dialling into the internet , and probes are just complicated devices that listen to all the internet traffic and break it down into its component data packetsthey can identify things like destination and source email addresses , and source and destination telephone numbers where the dial-up or broadband dsl modems are connected tookay ? good .