Story for the 192.168.100.1
Hello everyone!
Today, I would like to present a story about IP addressing 192.168.100.1
Objetive
The purpose of this post is to introduce you to the IP address 192.168.100.1 and its use in practice.
Whats is an IP address?
An IP address, short for Internet protocol address, is an identification number for network hardware connected to a network. Having an IP address allows a device to communicate with other devices over an IP-based network such as the Internet.
An IP address provides an identity for a networked device on the Internet. Similar to a home or business address that provides a specific physical location with an identifiable address, devices on a network are differentiated from one another through IP addresses.
What is a private IP address?
A private IP address is an IP address reserved for internal use behind a router or other network address translation (NAT) device, in addition to the public one. Private IP addresses contrast with public IP addresses, which are public and cannot be used on a home or business network. Sometimes a private IP address is also known as a local IP address.
Which IP addresses are private?
The Internet Assigned Numbers Authority (IANA) reserves the following blocks of IP addresses for use as private IP addresses:
10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255
The first set of IP addresses allows over 16 million addresses, the second over 1 million and over 65,000 for the last range.
Another range of private IP addresses is 169.254.0.0 to 169.254.255.255, but these are for automatic private IP addressing (APIPA) use only.
In 2012, IANA allocated 4 million addresses from 100.64.0.0/10 for use in carrier-grade NAT environments.
Who is the IP address 192.168.100.1?
192.168.100.1 is a private IPv4 network address, so it is only relevant on a local area network (LAN).
It can also be assigned as the default built-in IP address for some router models.
On my Tp-Link brand home router the default address is 192.168.0.1
In my example my router has the IP 192.168.0.1 and when I connect to it, I get an address in the same range that was assigned to me by DHCP. As we can see there is no reason to be sequential. For example: 192.168.0.2 or 192.168.0.3
As we can see in the image above, the gateway of my network is the router with address 192.168.0.1 and the machine received the address 192.168.0.137/24, belonging to the same range.
How big is the 192.168.0.0 network?
The size of the 192.168.0.0 network depends on the chosen netmask. For example:
192.168.0.0/16 ranges between 192.168.0.0 and 192.168.255.255 with 65,534 possible hosts.
192.168.0.0/18 ranges between 192.168.0.0 and 192.168.63.255 with 16,382 possible hosts.
192.168.0.0/24 ranges between 192.168.0.0 and 192.168.0.255 with 254 possible hosts.
Home broadband routers that run on the 192.168.0.0 network usually have 192.168.0.0/24 as the setting and typically use 192.168.0.1 as the local gateway address. This configuration allows the network to assign up to 254 devices with a valid IP address, a high number for home networks but possible based on configuration.
How to Connect to a Router 192.168.0.1
Administrators log into a router at this IP address, accessing it like any other URL . In a web browser, go to the navigation bar, type http://192.168.0.1 and press Enter .
- END -
Reference:
RFC1918: https://datatracker.ietf.org/doc/html/rfc1918
