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TN3270 is a special version of the Internet's Telnet protocol that allows users with non-3270- compatible systems to access IBM hosts. It transfers 3270 display terminal data by emulating a subset of the Telnet protocol. TN3270 provides terminal-to-host connections for TCP/IP users over intranets or the Internet. The TN3270 hosts connect to Telnet servers that are in turn connected to the host via SNA or non-SNA methods.