There are currently two methods of Internet access:
Open Transport is the latest software and it is thought that after System 8
MacTCP will no longer be supported. Certainly Open Transport will be an
option of MacOS.
Both possibilities function equally well and it is naturally sensible to
install the software that one has.
N.B. Apple does not recommend Open Transport for all operating systems
i.e. not for 7.5.1 or 7.5.2