Tcp Tutorial-14

combination of an IP address and a Port. So in the above case the message which is meant for the FTP

daemon will be addressed to 98.98.98.98 : 21 (Notice the colon and the default FTP port suceeding it.). So that the receiving machine i.e. 98.98.98.98 will know for which service this message is meant for and to which port it should be directed to.

In TCP\IP or over the Internet all communication is done using the Socket pair i.e. the combination of the IP address and the port.

***************** HACKING TRUTH: Learn More about Ports, IP addresses and Sockets by reading the Net Tools Chapter. ***************** The Application Layers basically consists of the Applications running on your computer and the Applications running on the host to which you are connected. Say you are viewing the Hotmail Site, then the application layer comprises of the Web Browser running on your computer and the HTTP daemon running at Hotmail's server and the Application Protocol being used to communicate is HyperText Transfer Protocol.

As soon as a TCP connection is established the Applications running on Each end decide the language or protocol to be used to communicate and send datagrams.

IP Spoofing Torn Apart

IP spoofing is the most exciting topic you will hear wannabe hackers talking about. It is also a subject about which no one knows much. Before we continue I would like to tell you that IP Spoofing is quite difficult to understand and a lot of people have trouble understanding how it is done. The other downside it