Juniper NETWORK AND SECURITY MANAGER 2010.2 - ADMINISTRATION GUIDE REV1 Administration Manual page 880

Network and Security Manager Administration Guide
User Datagram
Protocol (UDP)
User Interface (UI)
User Object
V
View
Virtual Chassis
Virtual IP Address
Virtual Link
Virtual Local Area
Network (VLAN)
Virtual Private
Network (VPN)
Virtual Router (VR)
Virtual Security Device
(VSD)
Virtual Security
Interface (VSI)
Virtual System (VSYS)
830
UDP is a protocol in the TCP/IP protocol suite that enables an application program to send
datagrams to other application programs on a remote machine. UDP provides an unreliable
and connectionless datagram service and does not guarantee delivery or duplicate detection;
it does not use acknowledgments, or control the order of arrival.
The NSM graphical User Interface (UI) is used to control the NSM system. Using the UI, you
can configure NSM administrators, add devices, edit policies, view reports, and so on.
User objects represent the users of your managed devices. You can include user objects or
groups in security policies or VPNs to permit or deny access to individuals or groups.
A view is an admin-defined subset of column settings and filters in the Log Viewer.
Stacked EX Series devices functioning as one logical EX Series switch or an SRX cluster
represented in NSM as a virtual chassis..
A VIP address maps traffic received at one IP address to another address based on the
destination port number in the packet header.
A logical path from a remote OSPF area to the backbone area.
A VLAN is a logical rather than physical grouping of devices that constitute a single broadcast
domain. VLAN members are not identified by their location on a physical subnetwork but
through the use of tags in the frame headers of their transmitted data. VLANs are described
in the IEEE 802.1Q standard.
A VPN is an easy, cost-effective and secure way for corporations to provide telecommuters
and mobile professionals local dial-up access to their corporate network or to another Internet
Service Provider (ISP). Secure private connections over the Internet are more cost-effective
than dedicated private lines. VPNs are possible because of technologies and standards such
as tunneling, screening, encryption, and IPSec.
A virtual router is the component of ScreenOS that performs routing functions. By default, a
security device contains two virtual routers: Untrust-VR and Trust-VR.
A VSD is a single logical device composed by a set of physical security devices.
A VSI is a logical entity at layer 3 that is linked to multiple layer 2 physical interfaces in a VSD
group. The VSI binds to the physical interface of the device acting as master of the VSD group.
The VSI shifts to the physical interface of another device in the VSD group if there is a failover
and it becomes the new master.
A virtual system is a subdivision of the main system that appears to the user to be a standalone
entity. Virtual Systems reside separately from each other. Each one can be managed by its
own Virtual System Administrator.
Copyright © 2010, Juniper Networks, Inc.