OpenView Network Node Manager: Designing and Implementing an Enterprise Solution

Introduction

The demilitarized zone (DMZ) is a term often used to describe a security island or security perimeter that protects the corporate network from untrusted networks to which it is connected. It’s often used to guard Internet connection from intruders (ingress) while governing how much access corporate users have to the Internet (egress).

Working with the corporate security group to implement an NNM solution for managing the DMZ may result in their unexpectedly imposing technical constraints that must be addressed before the solution is acceptable in this special environment.

Special security configurations for UNIX systems in a DMZ environment include limiting available network services and allowing access to specific services like ...