HP-UX Integrated Login

Integrating DCE with HP-UX Integrated Login

•Decide whether to activate the DCE backend to the Name Service Switch (NSS-DCE) so that getpw* and getgr* calls access the DCE registry for user information. (See the previous section, "Operation of the HP-UX Integrated Login Utilities," for further information.)

•Create entries in /etc/opt/dce/passwd_override for any accounts (such as printing or backup services) that require access to your system, but not to the DCE cell. Entries may be copied directly from /etc/passwd and appended to /etc/opt/dce/passwd_override. The activation process will automatically create an override entry for root; however, you must create override entries for any root aliases.

•The passwd_override file can also be used to disable access to the local system for selected users or groups. See the passwd_override man page for details.

•If necessary, use the /etc/opt/dce/sys.group and /etc/opt/dce/group_override files to override the entries in /etc/group. Use group_override to override /etc/group entries that have an account in the DCE Registry; use sys.group for those that do not.

The default /etc/opt/dce/sys.group file contains:

root::0:

other::1:

sys::3:

adm::4:

lp::7:

The default /etc/opt/dce/group_override file contains:

bin::2:

daemon::5:

mail::6:

If you plan to configure DCE as an additional technology:

•Configure the system as a DCE cell member.

•Set up valid accounts in the DCE Security Registry for all users that require login access to the cell. Use either dcecp or passwd_import to set up accounts.

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Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Default /etc/opt/dce/groupoverride file contains
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UX DCE Software specifications

HP UX DCE Software, or Hewlett-Packard UNIX Distributed Computing Environment, represents a significant tool in the realm of distributed system architecture. Designed primarily for enterprise environments, HP UX DCE enhances the reliability, scalability, and manageability of applications over diverse networked systems.

One of the main features of HP UX DCE is its ability to integrate various computing platforms, enabling seamless communication and resource sharing across distributed nodes. This facilitates the creation of complex applications that can operate on a multitude of systems, thus enhancing operational flexibility. DCE employs standardized interfaces, which means applications written for one platform can run on any other platform that supports DCE, promoting cross-platform compatibility.

In terms of technologies, HP UX DCE utilizes Remote Procedure Calls (RPC) as a core feature. This mechanism allows different applications to communicate and invoke procedures on remote systems as if they were local calls. Additionally, DCE includes a robust security model that incorporates Kerberos for authentication, ensuring that communication between nodes remains secure and protected against unauthorized access.

Another significant characteristic of HP UX DCE is its distributed file system, which allows for transparent file access across different machines. The DCE File System (DFS) provides a unified namespace and manages data replication and consistency across distributed storage resources. This reduces the complexity of data management and enhances data availability.

HP UX DCE also supports a variety of programming languages, making it accessible for developers accustomed to different coding environments. This versatility encourages widespread adoption and innovation, as developers can leverage existing skills to create distributed applications.

Furthermore, HP UX DCE is built for high availability, ensuring that critical applications remain responsive even in the face of hardware or network failures. Its inherent component redundancy and fault-tolerant architecture are designed to minimize downtime, which is essential for mission-critical applications in enterprise scenarios.

In conclusion, HP UX DCE Software provides a comprehensive framework for developing, deploying, and managing distributed applications. Its core features such as RPC support, a secure authentication mechanism, a robust file system, and cross-platform compatibility make it a vital resource for organizations aiming to leverage distributed computing effectively. As enterprises evolve, HP UX DCE stands out as an influential solution in the dynamic landscape of distributed environments.
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