Attacking cisco router-bug warning-the black bar safety net

In you see Before you need to know: －what is IP address?－ What is ISP for?－ What is the TCP/IP data package?－ How to hide your IP address?－ How to use Telnet in?－ How to use HyperTerminal for?－ How to use Ping for?－ How to use TraceRoute it?－ How to use a proxy server?...