310-015 Solaris 9 Sun Certified System Administrator Part II Study Guide Prepared by Killexams.com SUN Dumps Experts Exam Questions Updated On : Click To Check Update

Solaris 9 Sun Certified System Administrator Part II exam

Extending Authentication within the Solaris 9 operating environment using Pluggable Authentication Modules (PAM): half II | 310-015 Real Questions and VCE Practice Test

this article is a component two of a two-half series and details the PAM application programming interface and the PAM carrier provider interface. additionally included are processes on the way to without difficulty write PAM modules when the use of the Solaris 9 operating atmosphere. through writing these PAM service modules, it is viable to prolong the means of the Solaris 9 OE authentication mechanisms in a number of alternative ways.

this article is a component two of a two-half sequence. part one, posted in the September problem of sun BluePrintsTM on-line, specified the merits of Pluggable Authentication Module (PAM), its accessories, and the PAM light-weight listing entry Protocol (LDAP) module. this text details the PAM utility programming interface (API) and the PAM provider provider interface (SPI). also blanketed are strategies on how to simply write PAM modules when the usage of the SolarisTM 9 operating ambiance (Solaris 9 OE).

via writing these PAM carrier modules, it's feasible to lengthen the capability of the Solaris 9 OE authentication mechanisms in a number of different ways. The PAM interface in the Solaris 9 OE offers a set of APIs that will also be used via third-party applications to lengthen authentication capabilities. through the use of the PAM layer, functions authenticate to the system without worrying about what authentication formula has been chosen by way of the gadget administrator for any given customer. as an example, it is viable for a system administrator to stay away from users from determining new passwords that resemble their ancient password.

A PAM module is a shared object that's developed and written the usage of the c language. The module is dynamically chosen in line with the contents of the pam.conf(4) configuration file. here's an exceedingly efficient mechanism that permits the selection of essentially the most acceptable authentication mechanism for a specific environment—with out sacrificing performance or the deserve to depend upon third-birthday celebration or unsupported utility.

setting up a PAM module is not as tricky as you may feel. The PAM API has a rich set of points, and is fairly intuitive to gain knowledge of and use. on-line documentation is also obtainable (see http://medical doctors.sun.com).

this article addresses the following topics:

As introduced partly I, PAM is composed of a couple of accessories together with:

The PAM framework, comprises the PAM library (libpam.so.1), which carries an interface library and varied authentication service modules that are the layer implementing the PAM API.

it is outdoor the scope of this article to element every single API and performance. despite the fact, probably the most familiar and regularly occurring APIs are offered right here. The PAM API can also be grouped into 5 purposeful categories:

These features enable an software to invoke the PAM carrier modules and to communicate assistance to these modules. The services are described in the following sections.

These framework capabilities are PAM transaction routines for setting up and terminating a PAM session.

table 1 details the objects that may well be manipulated by way of these services.

merchandise identify

Description

These authentication features are used to authenticate the person and the present procedure.

customarily, this system is carried out after the consumer has been authenticated (after the pam_authenticate() function succeeds).

This account management function is used to validate the clients account suggestions. It usually includes checking for password and account expiration, valid login instances, and and so on.

These session administration features are known as on the initiation and termination of a login session.

The pam_unix_session module implements these calls to replace the /var/adm/lastlog advice. These functions can also help session auditing.

This password management characteristic is known as to trade the authentication token (password) linked to the person.

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