Remote Access Protocols

The TCP gateway sessions take advantage of the highly efficient fiber interface between the LCS60 and the data switch. With this service, any TCP/IP host that can be reached on the LAN is accessible from the data switch network. For LAN users, connection is generally provided through a DESTINATION: prompt, how- ever, a TCP service port can be customized to bypass this prompt and automatically connect the LAN user directly to a particular data switch end point.

Refer to Chapter 7 for configuration of gateway services.

Features

TCP Service Ports

A TCP service port is identified by a port number and can be customized to streamline the transition from the TCP/IP network to the data switch network. These ports can be configured with predefined destinations (PDDs), disconnect options, window size changes, time limit options for the DESTINATION: prompt and for data transmission, and customized destination prompts.

The number of TCP service ports is 500; each port can be defined with a unique PDD offering the administrator enhanced flexibility in terms of the number of data switch network connected hosts than can be contacted by each LCS60.

Serial Line IP (SLIP)

The LCS60 provides SLIP protocol capability to enhance dial-in access through the data switch network. SLIP enables remote users to gain access to their inter- net and use familiar TCP/IP commands for most applications, e.g., file transfer, electronic mail, and remote login.

SLIP allows a remote PC or Macintosh to logically reside on the TCP/IP LAN. In a SLIP session, a remote user can dial into an LCS60, request SLIP service, and receive an IP address automatically. This remote user is then logically connected to the LAN and can execute such TCP/IP commands as ftp, telnet, and ping.

With the capability for automatic assignment of IP addresses, the LCS60 maintains a database of used addresses and the LCS60 administrator does not have to pre-assign IP addresses to users. Static assignment of these addresses is still pos- sible, however, for any situation where it may be necessary.

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