Hi gdbs
To install ipp2p I just use yum :
yum install ipp2p smeserver-ipp2p --enablerepo=smetest
Then to enable it I do :
config set ipp2p service ipp2p both bit both apple tcp winmx tcp soul tcp ares tcp status enabled
signal-event post-upgrade
signal-event reboot
Filtering is not as perfect as it was a few month ago with oldest rpms/kernel...
At home, my emule can't connect to a server, but kad can connect in low id

and so, can download (very slowly, not much sources)
Azureus (a bitorrent client) don't find the tracker but can download very slowly.
As you can see this is not perfect, maybe a lack of configuration...
I tryed to set all to both with no more luck (and also 'all' as suggested by william_syd that works also by the way)
I just added the 'status enabled' stuff, maybe that was needed ?