Had I any clue, I'd explain it myself. Alas, I know nothing about that stuff.
Me, I'd try Googling it, perhaps with search strings like:
(ALLSTAR | ECHOLINK | IRLP) NODE
and so forth. But surely someone on ORR knows about these things.
p.s I just Googled with the string I suggested -- seems to be a brain-overload worth of stuff there.