> Does anyone have a utility (similar to telnet?) that will
> let me create UDP packets from shell scripts so I can test UDP attacks
> from shell scripts?
W. Richard Stevens wrote a program called "sock" to make arbitrary TCP and
UDP connections which he used to generate data for the examples in his
wonderful book "TCP/IP Illustrated, Volume 1". It is fully documented in
Appendix C, and instructions for obtaining the (free) source code are in
Appendix F. Highly recommended. (The code *and* the book.)