Bandwidth Management
Bbandwidth management is the process of measuring and controlling the communications (traffic, packets) on a network link, to avoid filling the link to capacity or overfilling the link, which would result in network congestion and poor performance.

Bypass Mode
Operating mode on FDDI and token ring networks where an interface has de-inserted from the ring.

CRM: Customer Relationship Management
CRM, or Customer Relationship Management, is a company-wide business strategy designed to reduce costs and increase profitability by solidifying customer loyalty.

Database: database server
Refers to the back-end system of a database application using client/server architecture. The back-end, sometimes called a database server, performs tasks such as data analysis, storage, data manipulation, archiving, and other non-user specific tasks.

DDNS: Dynamic Domain Name Server
The capability of having a website, FTP, or e-mail server-with a dynamic IP address-use a fixed domain name.

DHCP
Dynamic Host Configuration Protocol. Dynamically assigns IP addresses to client stations located on a TCP/IP network at startup, and allows the addresses to be re-used when no longer needed. This allows a larger group of stations to share a limited pool of addresses

DNS：Domain Name System
Aassociates various information with domain names; most importantly, it serves as the "phone book" for the Internet by translating human-readable computer hostnames。

Dynamic IP
Many Internet service providers limit the number of static IP addresses they allocate, and economize on the remaining number of IP addresses they possess by temporarily assigning an IP address to a requesting Dynamic Host Configuration Protocol (DHCP) computer from a pool of IP addresses. The temporary IP address is called a dynamic IP address.

Embedded system
Embedded system iss a special-purpose computer system designed to perform one or a few dedicated functions, often with real-time computing constraints. It is usually embedded as part of a complete device including hardware and mechanical parts.

ERP：Enterprise Resource Planning
Enterprise resource planning (ERP) is the planning of how business resources (materials, employees, customers etc.) are acquired and moved from one state to another.

Firewall
A system or combination of systems that enforces a boundary between two or more networks. It keeps your information in, and unwanted people out. It consists of one or more routers, which accept, reject, or edit transmitted information and requests. In addition to preventing unrestricted access into a network, a firewall can also restrict data from flowing out of a network.

Firmware
Firmware iss a computer program that is embedded in a hardware device, for example a microcontroller. It can also be provided on flash EEPROMs or as a binary image file that can be uploaded onto existing hardware by a user.

Foxmail
Foxmail is a cost-free e-mail client owned by Tencent. Market share reported over 3 million users in China. Original author Xiaolong Zhang , an alumni of HUST in Wuhan. It current supports POP3 and IMAP4(version 6.5 beta 2).

FTP : FTP Server
FTP (File Transfer Protocol) server is used to transfer files over a network (WAN, LAN or the internet using the FTP protocol.
Hot standby system for duplicated engine / duplicate hot standby system
Hot standby system means we have one server work and one server standby. If some problems occur to the working server, the other one will start to operate immediately by activation.

Gateway Antivirus
Gateway Anti-Virus allows applications across the enterprise to check files for viruses by providing a SOAP-based virus scanning web service.

Gateway Mode
If the local node is to announce itself as a gateway to Internet (0.0.0.0/0), the node will enter the gateway mode. This means that the node will be setting up a point-to-multipoint tunnel endpoint at the tunl0 interface. This interface will accept incoming IP-in-IP tunnel packets from all hosts.

HTTPS
Https encrypts the session with a digital certificate i.e., HTTP over SSL (Secure Sockets Layer) which can be used by Web browsers and HTTPS - capable client programs. So, if the website begins with https:// instead of http://, it is a secure site.

Hot standby system for duplicated engine / duplicate hot standby system
A hot spare or hot standby is used as a failover mechanism to provide reliability in system configurations. The hot spare is active and connected as part of a working system. When a key component fails, the hot spare is switched into operation. More generally, a hot standby can be used to refer to any device or system that is held in readiness to overcome an otherwise significant start-up delay.

IMAP：INTERNET MESSAGE ACCESS PROTOCOL
IMAP iss one of two of the most prevalent Internet standard protocols for e-mail retrieval, the other being POP3.

IMAPS：IMAP over SSL
IMAPS is the best choice of a secure protocol for receiving mail if you want to freely switch between our new web based email system (that uses IMAP folders) and your PC based mailer, particularly if you tend to leave your mail on our servers for perusal from various locations.

IPSEC
IPSEC is a suite of protocols for securing Internet Protocol (IP) communications by authenticating and/or encrypting each IP packet in a data stream. IPSec also includes protocols for cryptographic key establishment.

L2TP： Layer 2 Tunneling Protocol
Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs).

Linux
A Linux system usually provides a command line interface of some sort through a shell, which is the traditional way of interacting with a Unix system. A Linux distribution specialized for servers may use the CLI as its only interface. A “headless system” run without even a monitor can be controlled by the command line via a protocol such as SSH or telnet.

Load Balance
Load balancing is a technique to spread work between two or more computers, network links, CPUs, hard drives, or other resources, in order to get optimal resource utilization, throughput, or response time. Using multiple components with load balancing, instead of a single component, may increase reliability through redundancy. The balancing service is usually provided by a dedicated program or hardware device (such as a multilayer switch).

Mail Monitor
Mail Monitor allows you to easily monitor all your POP3 mail boxes. When you have received new mail, Mail Monitor can inform you about this with visual effects and sound. Mail Monitor can also launch your Email Reader. Mail Monitor support an unlimited number of mailboxes. You can see your messages in the message list, and you can delete any messages from server without ever loading them. You can mark messages as read and Mail Monitor will not notify you about them again. Also Mail Monitor allows you to preview messages without any risk for you and your computer from malicious viruses. The message is loaded into a text box and no scripts are allowed to be executed. This helps you protect your computer from mail viruses. If you see some unknown letters you can easily delete it if you think it is not for you.

Mail relay
The act of pointing one Domain’s MX Record to another IP address, thereby relaying it to another domain.

Mail server
A mail server (also known as a mail transfer agent or MTA, a mail transport agent, a mail router or an Internet mailer) is an application that receives incoming e-mail from local users (people within the same domain) and remote senders and forwards outgoing e-mail for delivery. A computer dedicated to running such applications is also called a mail server.

Media Access Control address
Media Access Control address is a quasi-unique identifier attached to most network adapters (NIC or Network Interface Card). It is a number that serves as an identifier for a particular network adapter.

NAT：Network Address Translation
NAT is the process of modifying network address information in datagram packet headers while in transit across a traffic routing device for the purpose of remapping a given address space into another.

Network Behaviors Monitor
Network monitoring describes the use of a system that constantly monitors a computer network for slow or failing components and that notifies the network administrator in case of outages via email, pager or other alarms. It is a subset of the functions involved in network management

Network Information Management
The process and techniques of remotely or locally monitoring and configuring networks.

Policy Routing
Policy routing in Sense refers to the capability of routing traffic by matching it to specific firewall rules. Each firewall rule allows you to select a gateway. If none is selected, traffic goes out your WAN interface. If you have any additional WAN interfaces (OPT WAN), or gateway load balancing or failover pools, you can select these in the Gateway field when adding or editing rules to direct matching traffic as you desire.

POP3: Post Office Protocol 3
POP3 (Post Office Protocol 3) is the most recent version of a standard protocol for receiving e-mail. POP3 is a client/server protocol in which e-mail is received and held for you by your Internet server.

POP3S：secure POP3
A POP3 server that communicates with a client using SSL (Secure Socket Layer).

Port Mapping
By using port mapping however, public services like a WWW server or an FTP server, and others running on your private network may become accessible from the Internet.

PPTP: Point to Point Tunneling Protocol
The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. Layer 2 Tunneling Protocol (L2TP) or IPSec are the standards-based replacements for PPTP.

QoS: Quality of Service
Quality of service (QoS) refers to resource reservation control mechanisms rather than the achieved service quality. Quality of service is the ability to provide different priority to different applications, users, or data flows, or to guarantee a certain level of performance to a data flow.

RAID1：named Mirror or Mirroring
RAID1 s a technology that employs the simultaneous use of two or more hard disk drives to achieve greater levels of performance, reliability, and/or larger data volume sizes.

RAID5
Speed and Fault Tolerance (Widely Used). Data are striped at the byte level across three or more hard disk drives for performance as well as fault tolerance. RAID 5 is commonly used in servers.

Top-level domain (TLD)
A top-level domain name (TLDN), is the last part of an Internet domain name; that is, the letters which follow the final dot of any domain name.

Route
An electronic device that connects a local area network (LAN) to a wide area network (WAN) and handles the task of routing messages between the two networks

SECOND LEVEL DOMAIN NAME
A second-level domain (SLD) is a domain that is directly below a top-level domain (TLD).

Service port
The term “service port” refers to a Customs location having a full range of cargo processing functions, including inspections, entry, collections, and verification.

SMTP
Simple Mail Transfer Protocol (SMTP) is the de facto standard for email transmissions across the Internet.

SMTPS："secured" SMTP
SMTPS could also be used between two SMTP servers to exchange messages, but it would be a special setting, as the two servers would need to known in advance that they should communicate between them in a special way (SMTPS). Instead, the standard behavior is to have an SMTP server connect to another SMTP server on port 25 using plain SMTP.

Socks：socket security,SOCKS
SOCKS is an Internet protocol that allows client-server applications to transparently use the services of a network firewall. SOCKS is an abbreviation for "SOCKetS"

Static allocation
Static allocation：static allocation or a static IP address is the assignment of a fixed address. For example, assigning a computer a fixed IP address of 192.168.123.114 will never change unless done so manually. This address is designated by the user and not the network.

Static IP
Static IP address is a number (in the form of a dotted quad) that is assigned to a computer by an Internet service provider (ISP) to be its permanent address on the Internet.

Transparent Bridge Modes
Transparent (web) packet traffic, switch or WCCP router, single NIC

Virus filter
Reduces the nuisance of spam and virus mail

Virtual Host
A Web server configuration in which different IP addresses point to different document roots, allowing more than one Web site to be supported on the same computer.

VPN
A virtual private network (VPN) is a private data network that makes use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures. The idea of the VPN is to give the company the same capabilities at much lower cost by using the shared public infrastructure rather than a private one.

Website Establishment
Establish a web site