Lucent Technologies PortMaster - Manual (Page 265)

17-1
Providing User Dial-In Access 17
This chapter uses an example to demonstrate how to configure a PortMaster for remote
dial-in access to local hosts and networks. Although the example shows how Internet
service providers (ISPs) can provide dial-in access to their users, this application can be
used by academic environments, corporate telecommuters, or anyone else needing
remote access to a host or network.
In this example, multiple asynchronous ports are configured with modems for
answering incoming calls from users who then access a networked host connected via
Ethernet to a PortMaster 2E Communications Server.
The following topics are described:
• “Overview of Dial-In Configuration” on page 17-1
• “Configuration Steps for Dial-In Access” on page 17-4
See the PortMaster Command Line Reference for more detailed command descriptions and
instructions.
Overview of Dial-In Configuration
The PortMaster configuration described in this example allows up to seven 30-port
PortMaster Communications Servers to be connected together to provide up to 210 dial-
in asynchronous ports. The PortMaster Communications Server allows dial-in users to
access a host for shell accounts and/or PPP, SLIP, or Compressed SLIP (CSLIP)
connections.
ISPs can use this example to configure their PortMaster products to allow dial-in users
to access hosts and networks. The number of ports used is a function of the number of
expected subscribers. One port per 10 subscribers is the typical ratio, but peak usage and
average usage per port should be monitored closely to determine the need for additional
ports. RADIUS Accounting can help you to evaluate port usage. See the RADIUS
Administrator’s Guide for more information.