HP-UX 11i June 2003 Release Notes

HP-UX 11i Version 1.0 Operating Environment Applications
HP-UX 11i Foundation Operating Environment
Chapter 6
116
Pluggable Authentication Module (PAM) Kerberos
Pluggable Authentication Module (PAM) Kerberos version 11i is a service for
authenticating users or services across an open network. HP-UX 11i provides Kerberos
authentication through a Kerberos-Client product which is a part of the HP-UX base
operating system. Kerberos, the primary authentication mechanism for Windows 2000,
is integrated with Active Directory Service to provide enterprise-wide account
management. This necessitates the implementation of the Kerberos authentication
mechanism on HP-UX as a Pluggable Authentication Module.
Pluggable Authentication Module (PAM) [OSF RFC 86.0] is the standard framework,
and is easily configurable to support multiple authentication technologies on HP-UX.
PAM Kerberos provides the PAM mechanism using Kerberos.
The PAM service module was implemented as a shared library, libpam_krb5.1. This
library is built by linking with libkrb5.sl, and is therefore not dependent on the
libsys.sl library.
The HP-UX 11i implementation of Kerberos version 5 protocol provides enterprise-wide
strong user authentication. Using encryption during the user authentication process,
Kerberos infrastructure provides privacy and integrity of user login information since
passwords are no longer communicated in clear text over the network.
HP-UX system entry services can work with any Kerberos v5 Server, namely, MIT
Kerberos and Microsoft Windows 2000. Thus, passwords can be effectively unified in an
Intranet with heterogeneous systems such as UNIX and Microsoft Windows 2000.
Furthermore, support of password change protocol has been implemented. These two
features can significantly reduce user administration complexity in a heterogeneous
environment.
The HP-UX applications using PAM include telnet, login, remsh, ftp, rexec, rlogin,
dtlogin, and rcp. PAM Kerberos interoperates with a Key Distribution Center (KDC)
operating on either a UNIX or a Microsoft Windows 2000 server.
The PAM Kerberos module is compliant with IETF RFC 1510 and Open Group RFC
86.0. PAM Kerberos is also available under the product number J5849AA on the
Applications Software CD. This product provides a libpam_krb5.1 library, a pam_krb5
(1) manpage, and a release note document.
updated for
September 2002
Now included with PAM Kerberos is the pamkrb5val tool, which will help
administrators validate the PAM Kerberos setup. The tool validates the following files
for PAM Kerberos-related entries:
• /etc/pam.conf
• /etc/pam_user.conf
• /etc/krb5.conf
• /etc/krb5.keytab
Also included is a sample pam.conf file.
Installation Requirements
The minimum disk space required to install the product is 1MB. Additional disk space of
about 1KB per user in the system /tmp file is required to store initial Ticket Granting
Tickets in the credential cache file.