Question : Fake IP Address - How ?

Hi,

Is it possible to create a UDP connection with a fake IP address ?

I want to the computer who get's my UDP message to think it came from a diffrent IP address ?

Is it possible with TCPIP ?

If the answer to one or more of the questions is YES  - then How ?
If NO - why not ?

( When I say possible - I mean even not in a conventional way ...)

Thanks,

Eli.

Answer : Fake IP Address - How ?

SPOOFING - Faking the sending address of a transmission in order to gain illegal entry into a secure system.

NAT - Network Address Translation:  The process of converting a private IP address into an internet public address, used to allow mulitple hosts on a LAN to access the internet through one IP.

The reason I gave these definitions is to show how easily it is to masquerade layer 3 (Network).  Both of the techniques above use software tools to massage the header in an IP packet.

UDP operates at a port level, which is layer 4 and 5 (transport and session).  Port masquerading for UPD and TCP is much easier as it can be done by software.

There are a multitude of interesting and educating hacking resources on the web and I DO condone hacking as a form of understanding the TCP architecture and how to properly secure it.  People hacking my stuff just inspires me to be counter-defensive and educate myself on the measures in doing so.

prizm