It's called 'TCP/IP stack'.
AmigaOS 3.5 only comes with time limited demo version of Miami. You can't register it. The very same software is available in
Aminet. Oh yes, AmigaOS 3.5 was marketed to include full TCP/IP stack. It never did.
AmigaOS 3.9 comes with
illegal copy of Genesis.
If you want to stay legal (and have full unlimited network connectivity), the only solution for now is the
GPL version of AmiTCP/IP 3.0b2 or if someone sells you used copy of AmiTCP/IP, Genesis or Miami[DX]).
