Fundamentals of Networking:
In this blog we will first concentrate more about basics of networking.
The basic of networking are:
(These are foundation of Networking you can use this instead)
§
IP Address
§
Sub netmask
§
Network devices (ex: Switch, Router,
Wireless access point)
§
DNS
§
DHCP
§
OSI (Open-System Interconnection)
§
TCP (Transmission control Protocol)
§
UDP (User Datagram Protocol)
§
NAT
IP address:
IP
stands for "Internet Protocol”.
An IP address is a unique address that identifies a device on the internet or a local network. Ex: IP address is like rental house , People purchase TV or some other things in online shopping. Once you are done with the payment process the TV will be delivered to their respective home address. Imagine home address as the IP address and device as people Similarly the device will request some data from internet, and internet must know the address of the particular device then only it will send the data to the correct device.
Why I am using
Rental house here as an ex:
Imagine if you decide to
shift your rental house (in our example it denotes as an IP address). Once you vacated
the new unknown person or family must be stay on some period. Similarly, Your ISP
provided the IP address for your device it may change in some period
Example
of IPv4 address:192.168.10.X
Types
of IP Address:
o Public
IP address
o
Private IP address
Let
us get familiarize with the IP Address
Did you Know: To use public ip you must
pay for that 😱.
Your
ISP (Internet service provider?)
(Ex; Jio, airtel) are provided the public ip address for their customer.
Private
IP address:
Every device that connects to your internet network has a
private IP address. This includes computer, smartphone, tablet etc. Basically,
LAN network has a Private IP address.
How can we know that the IP address is whether
Private or Public? Ans: It depends up on the range
Private IP address range:
· Class A: 10.0.0.0 to 10.255.255.255
· Class B: 172.16.0.0 to 172.31.255.255
· Class C: 192.168.0.0 to 192.168.255.255
Note: Every other IP address is a public IP address
issued by ISPs to connect to the Internet.
Public IP address:
Public IP address is a globally
routable unicast IP address This address is not an address that is reserved to
use in private IP address.
To access the internet every device
needs to be a public IP address.
Why public address is used
internet? Ans. Public IP-Address is routable
Ex: you can check with
your home router itself
Once you are connected to a device with
your router. Check the ip address of the device.
Steps to check ip in
mobile phone:
Settings >
Wireless & Networks (or "Network &
Internet") > select the Wi-Fi network that you're connected to > Your IP address is displayed with other network information.
Steps
to check ip address in laptop:
1. In
the Windows search fields, type CMD, to open command prompt.
2. Press
Enter.
3. Type
ipconfig/all press Enter.
(Or)
On
the task bar, select Wi-Fi or Ethernet > click
on the network you're currently connected to > select Properties
> your IP address is listed next to "IPv4
address.”
once you observe your device ip address
(that’s your private ip address) make a note of it. Open google search and enter
“my ip address “it displays the Public ip address of your device. Once you notice
both IP address compare them you would find the variation.
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