It's actually not that difficult to spoof IP addresses. DOS attacks use
this method and this is the reason why said attacks are so difficult to
trace. If you want to get some source code for spoofing, checking out
programs like "land" or a modified "teardrop".
At 12:57 AM 2/17/00 -0500, Nat wrote:
> > Secondly, if this works, are there any networks that don't allow two
> > computers to send packets with the same source IP, but only one computer
> > is receiving packets on that IP?
>
>Can't answer the first question, but I was under the impression that a
>good ethernet hub (like the large ones Yale has all over) can be
>configured with a security option that does this. I'm not clear on
>whether the security option merely limits the EHAs through each port to
>one, but I'm pretty sure it's intended to prevent packet sniffing- that
>is, only one computer can receive info directed to a certain address
>(what kind I'm not sure).
>
>This does seem to be on the hardware rather than software level, but I
>think it accomplishes the same thing. I wouldn't have though that it'd be
>possible to prevent sending packets with someone else's IP address, aside
>from the impossibility of actually sharing said address.
>
>-Nat
This archive was generated by hypermail 2b29 : Wed Apr 27 2005 - 03:30:03 EDT