Mutant Rob wrote: | > Q: Is it practically possible to find netphone traffic on a | > generic network at any level above the source and target addresses? | | Good question. Presumably, the signal has a number of charictaristics. Some of them have a central switchboard, where preople go to set up calls. Most presumably use a mix of a UDP data connection and tcp for control functions. They all consist of high volume, long duration connections (or data flows in the case of UDP.) Many probably use a standardized destination port. They might use the urgent pointer to force data up the stack quickly. In short, yes the data streams can be easily found, if one can tap and grep a T3 in real time. Adam -- "It is seldom that liberty of any kind is lost all at once." -Hume