N

n + 1 directory problem

(n.) The problem of managing multiple instances of the same information in directories and databases of different types, resulting in increased hardware and personnel costs.

name collision

(n.) A conflict that occurs during replication if multiple entries have been added or renamed and there is an attempt to use the same DN. The conflicting entries are renamed automatically by the directory servers to ensure DN uniqueness.

name identifier

(n.) The pseudonym used to map a user’s account information across a number of service and identity provider organizations in order to preserve anonymity. Through the use of this identifier, neither the identity provider nor the service provider know the user’s actual identity.

name resolution

(n.) The process of mapping an IP address to the corresponding name. See also DNS.

namespace

(1) (n.) The tree structure of an LDAP directory. See also DIT.

(2) (n.) A standard that lets you specify a unique label for the set of element names defined by a DTD. A document using that DTD can be included in any other document without having a conflict between element names. The elements defined in your DTD are then uniquely identified so that, for example, the parser can tell when an element <name> should be interpreted according to your DTD rather than using the definition for an element <name> in a different DTD.

naming attribute

(n.) The final attribute in a DIT distinguished name. See also relative distinguished name.

naming context

(1) (n.) A specific suffix of a DIT that is identified by its DN. In Directory Server, specific types of directory information are stored in naming contexts. For example, a naming context that stores all entries for marketing employees who work at the Example Corporation’s Boston office might be called ou=mktg, ou=Boston, o=example, c=US.

(2) (n.) A set of associations between unique, people-friendly names and resources. See also JNDI extension, JNDI name, resource.

naming environment

(n.) A mechanism that allows a component to be customized without the need to access or change the component's source code. A container implements the component's naming environment and provides it to the component as a JNDI naming context. Each component names and accesses its environment entries using the java:comp/env JNDI context. The environment entries are declaratively specified in the component's deployment descriptor.

native channel

(n.) A Portal Server channel which displays native content.

native content

(n.) Content written in a native markup language such as HTML that can be sent to a client without conversion.

native desktop

(n.) A Portal Server Desktop that displays native content.

NDN

(nondelivery notification) (n.) A nondelivery report that the MTA sends back to the sender (with the original message) if the MTA does not find a match during message transmission between the address and a rewrite rule.

nested role

(n.) A role that names other role definitions. The set of members of a nested role is the union of all members of the roles it contains. Nested roles may also define extended scope to include the members of roles in other subtrees.

NetFile

(n.) A Java^TM technology-based file server application that enables users to have remote access to file systems, thereby enabling remote operations on files and directories.

Netlet

(n.) A Java applet used in Java Enterprise System Portal Server to allow any applications based on Transmission Control Protocol/Internet Protocol to securely connect to servers through an authenticated Portal Server connection.

NetMail

(n.) The NetMail component implements the NetMail (Java technology-based client) and NetMail Lite email clients. These clients work with standard IMAP and SMTP servers.

Netscape^TM Console

(n.) An application written in the Java programming language that provides server administrators with a graphical interface for managing all Netscape servers from one central location anywhere within the enterprise network. From any installed instance of Netscape Console, you can see and access all the Netscape servers on the enterprise’s network to which you have been granted access rights.

network management station

See NMS.

network manager

(n.) A program that reads, formats, and displays SNMP data. Also known as an SNMP client.

Network Security Services for Java (JSS)

(n.) A class library that provides Java bindings to the Network Security Services SSL library. Portal Server uses this class library to initiate secure socket layer connections from servlets and to accept SSL connections in the Portal Server Secure Remote Access Pack gateway.

news channel

(n.) Forums for posting and sharing information. Users subscribe to news channels in order to see updates. The information in a news channel is usually published automatically by way of a URL or published by a user with the proper privilege. Administrators can control news channel access by assigning users to the channels they need and deciding who can see or publish information to news channels.

news channel list

(n.) A window that shows all the news channels to which you are currently subscribed. Each news channel is indicated by a separate tab.

next-hop list

(n.) A list of adjacent systems that a mail route uses to determine where to transfer a message. The order of the systems in the next-hop list determines the order in which the mail route transfers messages to those systems.

NIS

(network information service) (n.) (UNIX only) A system of programs and data files that UNIX systems use to collect, collate, and share specific information about machines, users, file systems, and network parameters throughout a network of computers.

NMS

(network management station) (n.) A powerful workstation with one or more network management applications installed. The NMS is a machine used to remotely manage your network.

NNTP

(Network News Transfer Protocol) (n.) A protocol for newsgroups. You must define your news server host to use agent services on your server.

node

(1) (n.) A computing node. One of a number of computers in a network or Internet environment. Distributed applications are deployed across this environment, with different distributed components, business services, and servers running on the various computing nodes. See also cluster.

(2) (n.) See HADB node.

node agent

(n.) A lightweight agent that is required on every machine that hosts at least one Application Server server instance, including the machine that hosts the Domain Administration Server. The node agent performs tasks including starting, stopping, creating and deleting Application Server instances as instructed by the Domain Administration Server.

nondelivery notification

See NDN.

NoPassword authentication

(n.) A type of authentication that allows users to log in to the Access Manager without being prompted for a password.

normalization

(n.) The process of removing redundancy by modularizing, as with subroutines, and of removing superfluous differences by reducing them to a common denominator. For example, line endings from different systems are normalized by reducing them to a single new line, and multiple white space characters are normalized to one space.

North American Industry Classification System (NAICS)

(n.) A system for classifying business establishments based on the processes they use to produce goods or services.

NOTARY messages

(n.) Nondelivery notifications (NDNs) and delivery status notifications that conform to the NOTARY specifications RFC 1892.

notation

(n.) A mechanism for defining a data format for a non-XML document referenced as an unparsed entity. This is a holdover from SGML. A newer standard is to use MIME data types and namespaces to prevent naming conflicts.

notification message

(n.) A type of message sent by the Messaging Server providing the status of message delivery processing and the reasons for any delivery problems or outright failures. The messages are for information al purposes and require no action from the postmaster. See also delivery status notification

notification service

(n.) A service that receives subscriptions and notifications from other servers and then relays notifications to specific subscribers. The Calendar Server csnotifyd service sends notifications of events and to-do tasks using Event Notification Service (ENS) as the broker for the events.

NSAPI

See server plug-in API.

ns-slapd

(n.) (UNIX only) A process or service responsible for all actions of the Directory Server. On Windows systems, the equivalent is slapd.exe.

ns-slapd.exe

(n.) (Windows only) The process monitor on Windows systems.