Protocol filter capabilities

[Alexandre DELAY]

hi guys,

I am looking for an efficient way to filter different protocols, such as
edonkey or BEEP.
For the moment, I think that ipfw doesn't support it.

Don't you think that it would be a nice thing to be able to include such
"filters" from, for example, ethereal?
Ethereal support more than 34k different protocols. It woul be nice to be
able to choose from those filters and to apply some rules according to those
filters.

Do you know a way to do this?

Cheers

Alex