Open System Services Management and Operations Guide (G06.30+, H06.08+, J06.03+)

7 Managing Terminal Access
This chapter briefly describes the concepts and methods available for providing terminal users with
access to the Open System Services (OSS) environment.
• “How Users Gain Access to the OSS Environment” (page 199)
• “Configuring Telserv Access” (page 199)
• “Configuring FTP Access” (page 203)
How Users Gain Access to the OSS Environment
A user gains access to the OSS environment through a server process. The most commonly used
server subsystems are Telserv and the file transfer protocol (FTP) server. Other servers, such as the
iTP WebServer httpd process, are beyond the scope of this guide.
Both Telserv and the FTP server authenticate the user’s login information against the user definitions
configured through either a third-party product or the Safeguard subsystem. (“Managing Security”
(page 216), describes configuration of user definitions.)
Telserv provides access in the following ways:
• Indirectly, when the user selects the TACL service, logs in to the Guardian environment from
a TACL prompt, and then enters the OSH command. (See the osh(1) reference page either
online or in the Open System Services Shell and Utilities Reference Manual.)
• Directly, when the user logs in to a direct service that invokes the OSH command to start an
OSS shell.
• Directly, when the user logs in to a direct service that uses the OSH command to start any
executable program correctly configured through the security subsystem, and through the
Telserv SCF product module.
OSS users can optionally redirect one or more OSS standard files using either the OSH command
and a private copy of the OSSTTY utility, or through an OSSTTY server. OSSTTY appears as a set
of terminal devices to an OSS process and behaves as if it were a Telserv terminal session with
three windows. OSS standard files that are not redirected remain associated with the terminal
device provided by Telserv. See “Redirecting OSS Standard Files” (page 195) and “OSSTTY”
(page 395) for more information.
The FTP server provides access initially to either the Guardian environment or to the OSS
environment. The choice of an initial environment depends on:
• Whether the user is anonymous and which anonymous login is used.
• The way the initial working directory is configured for a user definition that is not anonymous.
(The FTP user can use an FTP client quote command to gain access to the opposite
environment.)
See “Managing Security” (page 216), for information about configuring initial working directories.
Configuring Telserv Access
Configuring Telserv access is fully described in the Telserv Manual. The following subsections
provide a brief review of the options available to you and the effects of each option on user access.
Configuring the Telserv TACL Service
The default services for a Telserv session (window) provide the user with two choices. The user can
either select “TACL” to obtain a TACL prompt in the Guardian environment or select “EXIT” and
be disconnected from the NonStop node.
Using only default services, Example 15 shows what a Telserv login usually looks like.
How Users Gain Access to the OSS Environment 199