Host name: Which
system in the data centre is identified by unique name which is called as host
name without host name the system could not be communicated over Network.
IP address:
Internet protocol address: It is a numeric cable assigned to each machine that
is going to participate in the network communication.
Private IP addresses:
These are used internally within the company. It ranges between 0-255, 0-255,
0-255, 0-255. (4 bit).
A class IP address starts with 10.0.0.1 (Big companies uses
this range)
B class IP address starts with 172.17.0.1 (Middle sized
companies uses this range)
C class IP addresses starts with 192.168.0.1 (Small sized
companies mostly R&D)
Other than the above all the address are public IP
addresses. These IP addresses are obtained from network carriers.
Static IP address:
The addresses that is assigned to servers permanently so that addressing to the
server is constant.
Dynamic IP address:
The addresses that are assigned dynamically which can be renewed for every
14 days based on DHCP(Dynamic Host Configuration Protocol). These are assigned
to all desktops/ laptops/ workstation/Devices.
Intranet: The
computers which are connected outside the company network using MAN (Metro Area
Network)/WAN (Wide Area Network) using public IP address.
Router: It is a
physical device that is in entry/exit point to the network. Router can be set
with predefined rules.
Firewall: It is a
Software/Hardware/Server that is used to restrict/prohibit the access to
websites, IP addresses, host names, ports and protocols.
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