Wikipedia
GatorBox
The GatorBox is a LocalTalk-to-Ethernet bridge, a router used on Macintosh-based networks to allow AppleTalk communications between clients on LocalTalk and Ethernet physical networks. The GatorSystem software also allowed TCP/IP and DECnet protocols to be carried to LocalTalk-equipped clients via tunneling, providing them with access to these normally Ethernet-only systems.
When the GatorBox is running GatorPrint software, computers on the Ethernet network can send print jobs to printers on the LocalTalk network using the 'lpr' print spool command. When the GatorBox is running GatorShare software, computers on the LocalTalk network can access Network File System (NFS) hosts on Ethernet.