Enterprise network, Fast Ethernet, Firewall

DHCP	Dynamic Host Conﬁguration Protocol was developed by Microsoft a
	protocol for assigning dynamic IP addresses to devices on a network.
	With dynamic addressing, a device can have a different IP address
	every time it connects to the network. In some systems, the device’s
	IP address can even change while it is still connected. DHCP also
	supports a mix of static and dynamic IP addresses. This simpliﬁes
	the task for network administrators because the software keeps track
	of IP addresses rather than requiring an administrator to manage
	the task. This means a new computer can be added to a network
	without the hassle of manually assigning it a unique IP address.
	DHCP allows the speciﬁcation for the service provided by a router,
	gateway, or other network device that automatically assigns an IP
	address to any device that requests one
DNS	Domain Name System is an Internet service that translates domain
	names into IP addresses. Since domain names are alphabetic,
	they’re easier to remember. The Internet however, is really based
	on IP addresses every time you use a domain name the DNS will
	translate the name into the corresponding IP address. For example,
	the domain name www.network_camera.com might translate to
	192.167.222.8.

Enterprise network	An enterprise network consists of collections of networks connected
	to each other over a geographically dispersed area. The enterprise
	network serves the needs of a widely distributed company and
	operates the company’s mission-critical applications.
Ethernet	The most popular LAN communication technology. There are
	a variety of types of Ethernet, including 10 Mbps (traditional
	Ethernet), 100 Mbps (Fast Ethernet), and 1,000 Mbps (Gigabit
	Ethernet). Most Ethernet networks use Category 5 cabling to carry
	information, in the form of electrical signals, between devices.
	Ethernet is an implementation of CSMA/CD that operates in a bus or
	star topology.

Fast Ethernet	Fast Ethernet, also called 100BASE-T, operates at 10 or 100Mbps
	per second over UTP, STP, or ﬁber-optic media.
Firewall	Firewall is considered the ﬁrst line of defense in protecting private
	information. For better security, data can be encrypted. A system
	designed to prevent unauthorized access to or from a private
	network. Firewalls are frequently used to prevent unauthorized
	Internet users from accessing private networks connected to the
	Internet, especially Intranets all messages entering or leaving the
	intranet pass through the ﬁrewall, which examines each message and
	blocks those that do not meet the speciﬁed security criteria.

NP2624M User Guide	125
YML827 Rev1

NetComm NP2624M manual Enterprise network, Fast Ethernet, Firewall