March 2003
Intermediate to advanced
308 pages
9h 36m
English
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The nss_ldap Module
The Name Service Switch (NSS) is similar to PAM except that it only provides a mechanism for information retrieval. PADL Software’s nss_ldap module can be obtained from http://www.padl.com/OSS/nss_ldap.html. The current implementation can be used on AIX, HP-UX, Linux, and Solaris. Although the pam_ldap module supports FreeBSD and Mac OS 10.2, the nss_ldap library does not. This means that you will not be able to apply the complete solution outlined in this chapter to those platforms.
Compiling PADL’s nss_ldap module is almost the same as compiling pam_ldap. The same options are available to the configure script (for explicitly defining the LDAP libraries to be used and their locations). The one additional compile-time setting that you will use is -enable-rfc2307bis. This change optimizes the search parameters for each nsswitch.conf database by using the nss_base_* parmeters. Otherwise, nss_ldap would query for entries by performing a subtree search beginning at the base (from /etc/ldap.conf). The familiar three-step:
$ ./configure --enable-rfc2307bis $ make $ /bin/su -c "make install"
installs an appropriately named version of the nss_ldap library in /lib. For example, the resulting file would be /lib/libnss_ldap.so on a Linux host and /lib/nss_ldap.so on a Solaris box. Since the examples in this chapter are based on Linux systems, whenever there is a need to refer to the actual nss_ldap library file, I will use the libnss_ldap.so filename.
The nss_ldap module ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.