HP-UX Integrated Login

Integrating DCE with HP-UX Integrated Login

WARNPWDEXP and FORCEPWDCHANGE parameters in the section “Activating HP-UX Integrated Login” earlier in this chapter for information on how to manage password expiration.

DCE and Anonymous FTP

If you are using the HP-UX Integrated Login utilities on a system that supports anonymous ftp, be aware of the following:

•An ftp account must exist in the DCE registry. This account need not be password-validated for DCE use, but it must exist. Create this account using dcecp, or use the passwd_import utility from a system that is supporting anonymous ftp (such as from a machine that has an entry for the ftp user in /etc/ passwd).

•DCE accounts are global to a DCE cell. If anonymous ftp is supported anywhere in the cell, the ftp account is known throughout the cell. In the case that you would like to explicitly disable anonymous ftp to a local machine, an override entry should be placed in the passwd_override file for the ftp user. (Typically, an entry in passwd_override is created by cutting and pasting the ftp entry from /etc/passwd into the passwd_override file.) To disable ftp on the local machine, change the passwd_override entry to contain the word “OMIT” in the passwd field of the entry. For example, /etc/opt/dce/ passwd_override contains the line:

ftp:OMIT:500:10:anonymous ftp:/users/ftp:/bin/false

See the passwd_override man page for further details about using the OMIT keyword.

•If you would like to maintain a local anonymous ftp account on a DCE cell member system, place an entry for the anonymous ftp account in the passwd_override file on that system. Note that the home directory for the local anonymous ftp account must reside on the local system, and that an entry for user ftp must exist in the DCE registry.

Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual DCE and Anonymous FTP
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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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