Apple Open Transport

Definition of Apple Open Transport in The Network Encyclopedia.

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What is Apple Open Transport?

An Apple networking technology for transport-independent networking that is part of the networking and communication subsystem of the Macintosh operating system. Apple Open Transport is designed to make it easy to set up and configure networking on the Macintosh computer and to increase the performance of file, print, and other networking services on a MacOS server.

Open Transport provides a consistent interface for configuring network services across supported protocols and a uniform set of application programming interfaces (APIs) for accessing networking and communication services on the Macintosh.

Open Transport enables protocols to be loaded and unloaded on demand, provides a networking naming scheme plus consistent network services over the TCP/IP and AppleTalk protocols, and includes support for TCP/IP services such as Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS). Open Transport also provides consistent API access to serial communication on the Macintosh, while third-party support is available for PPP, NCP/IPX, SMB/TCP/NetBIOS, DECnet, LAT, and X.25.

The Open Transport/AppleTalk protocol stack supports both the dynamic self-addressing of traditional AppleTalk clients and newer manually assigned static addressing. The Open Transport/TCP/IP protocol stack supports DHCP, bootstrap protocol (BOOTP), both local hosts files and DNS, Internet Protocol (IP) multicasting, both Ethernet Version 2.0 and IEEE 802.3 framing, TCP wildcard source port assignments, PPP connectivity, IP multihoming, and almost unlimited simultaneous TCP connections (limited only by installed memory and processor power).

An Apple Macintosh running Open Transport/TCP/IP can function as a DHCP client to a Microsoft Windows NT server running as a DHCP server, but not as a WINS client.
Open Transport from Apple is part of the MAC OS system tha allows compatibility for windows networks.