socket security

[Jon Ribbens]

In article <40sr8.3765$rg3.345703 at news-binary.blueyonder.co.uk>,
  Alastair Nicol wrote:
> 1) Can only hosts which can see the interface your program is bound to 
> communicate with your program. In the "normal" case if you bind to 
> 127.0.0.1 for example ONLY your machine can see that interface. Other 
> machines cannot connect to it. Is this a safe / secure assumtion? (not just 
> for localhost)

No. Other machines on your local net can talk to your localhost by
sending ethernet packets with your machine's MAC address and 127.0.0.1
as the IP address.