How do I Identify When an IP Address is Private or Public? - GeeksforGeeks (2024)

Why is the IP address called a "logical" address, and the MAC address is called a "physical" address?

Let us try to deeply understand, why IP address is known as "Logical" while, MAC Address is known as "Physical" address. The IP address and the MAC address are both used for addressing and identifying devices on a computer network, but they serve different purposes and operate at different levels of the network stack. An IP address is a logical add

IP address as logical address and MAC address as Physical address

Overview :IP addresses and MAC addresses are essential for data communication. Assume there are two networks. The first network has three devices: A, B, C and the second network has three devices: X, Y, Z. If a device A from the first network wishes to send data to a device Y in the second network, it must first determine where Y is located in the

How to identify unicast ip address?

Answer: To identify the unicast IP address, first check the first part of the given IP address. If the first part of the given IP is in between the range of 192.0. 0.0 to 223.255. 255.255 then the address is unicast address. What is Unicast?When a packet is sent from one address to other single address then the process is known as unicast. In the u

How Can You Identify the IP Class of a Given IP Address?

Answer: To identify the IP class of a given IP address we check the first octet of the IP address. Every class of IP address have specified range of first octet of IP address. So, for the given IP check the first octet of IP falls under which class range and accordingly identify the class of given IP address.Range of Class of IP AddressBelow table

Know your public and private IP addresses

You might have used ifconfig command on your linux terminal to know different network configurations of your system. ifconfig command shows hardware address(HWaddr) and network address(inet addr) for Ethernet or your wifi connection. ifconfig command don't show your public IP address(if public and private are different). For that purpose, you can s

Difference between Private and Public IP addresses

IP Address or Internet Protocol Address is a type of address that is required to communicate one computer with another computer for exchanging information, file, webpage, etc. In this article, we will see the classification of IP Addresses and the differences between Public and Private IP Addresses. Before proceeding with that, let's see what is an

Difference between Private key and Public key

Cryptography as a field emphasizes the need to guarantee secure communication and data privacy. There are mainly two approaches available to perform this operation: – Private Key Cryptography (RIC or Symmetric Key Cryptography) and Public Key Cryptography (PKE or Asymmetric Key Cryptography). Although they are used to protect information, they work

What is Public IP Address?

In this growing digital world and in the context of computer networks, the Internet is the most crucial and vital topic that has enclosed us through various perspectives. Various electronic devices that we use such as Mobile, tablets, smart watches, and computer systems are connected to the internet. For all these devices, there is an essential nee

Port Address Translation (PAT) mapping to Private IPs

In this article we will be learning how exactly a Home network works. In the beginning we should keep in mind that when we connect our Laptops, Smart Phones Tablets etc to the home network all get a IP address. This IP address which is assigned to these devices is not public IP address rather they are private IP address. This home network is a Loca

How is a Private IP Address Assigned?

Answer: Private IP addresses are assigned within a specific range reserved for private networks by a router or network administrator.Private IP addresses are assigned to devices within a local network to facilitate communication within that network. The assignment process typically involves a router, which acts as the gateway between the local netw

MAC Address and Random MAC Address

MAC Addresses are the address which are specified by the Manufacturer.MAC address help in communicating with the devices with communicating with other devices over the network. They are 12 digit hexadecimal numbers in which first three set bits specify the manufacturer of the device and last 3 specify the specific device. Random MAC Address They ar

Why Do We Need IP Address if We Have Already MAC Address?

Answer: The network allots an IP address to every connected device making sure that every device can be identified separately within the network. Each device is identified by its MAC address, which cannot be shared by two devices. The MAC address is assigned by the embedded Network Interface Card (NIC) of each device and cannot be altered once set.

How do You Calculate the Subnet Address from an IP Address and Subnet Mask?

Answer: To calculate the subnet address from an IP address and subnet mask we first convert both into its binary form and perform the bitwise AND operation between IP address and subnet mask.Subnet MaskThe subnet mask of a network is the number in which all the network bits are set to 1 and all host bits are set to 0. Subnet ID or Subnet AddressThe

What is Physical Address and Logical Address in Networking?

A physical address is a unique identifier given to network interfaces for communication over a physical network segment. A logical address is a unique address assigned to each networked device toidentify its location and enable routing. In this article, we will discuss Physical Address and Logical Address. What is a Physical Address?The physical a

Difference Between MAC Address and IP Address

Both MAC Address and IP Address are used to uniquely define a device on the internet. NIC Card’s Manufacturer provides the MAC Address, on the other hand, the Internet Service Provider provides the IP Address. In this article, we will learn about MAC Addresses, IP Addresses, and their differences. What is MAC Address?MAC, or Media Access Control is

Difference Between Network Address Translation (NAT) and Port Address Translation (PAT)

In the world of networking, most of the uses of IP addresses are important due to the limited availability of IPv4 addresses which is a part of network address translation. Two technologies that have been developed to address this problem are Network Address Translation and Port Address Translation. These technologies not only help to keep IP addre

How To Identify by Examining Whether a Packet is Unicast or Multicast?

Pre-requisites: Multicasting in Computer Networks Difference between Unicast, Broadcast, and Multicast in Computer Networks In a computer network, a packet is a unit of data that is transmitted over the network from one device to another. Packets can be classified as either unicast or multicast based on the type of address used to identify the dest

How to Identify a HTTP Request is Sent by a Local Network Computer or by an Internet Client?

Answer: If it falls within private IP ranges e.g., 10.x.x.x, 172.16.x.x to 172.31.x.x, 192.168.x.x, it's from a local network, otherwise, it's from an internet client.Capture the Client's IP Address When your server receives an HTTP request, it typically includes the client's IP address in the request headers or the server's access logs. Analyze th

How To Identify a Non-Computer Network Device?

Answer: Check if the device lacks an OS and supports data transmission, like a switch or modem.Identifying a non-computer network device involves several steps: Step 1: Physical InspectionLook for devices that are not typical computer equipment, such as routers, switches, modems, printers, network-attached storage (NAS) devices, smart TVs, gaming c

Types of Phishing Attacks and How to Identify Them

As cybercrimes continue to increase, people should learn and be aware of the common cyber attacks. Phishing is a common type of cyber attack, where the attacker tries to get a user's personal information by pretending to be a reliable source. We'll learn about the phishing attack, how it happens, it's types and how to prevent it. What is Phishing A

Public Key Infrastructure

Public key infrastructure or PKI is the governing body behind issuing digital certificates. It helps to protect confidential data and gives unique identities to users and systems. Thus, it ensures security in communications. The public key infrastructure uses a pair of keys: the public key and the private key to achieve security. The public keys ar

Risks Associated with Public Wi-Fi

Public Wi-Fi is usually available in places like coffee shops, libraries, Airports, railway stations, etc. In some nations, public Wi-Fi is provided by the govt. These are usually free but in some places like hotels you may need to pay for it or the username and password are provided for free. With the increase in popularity of Public Wi-Fi. It has

How Does a VPN Ensure Secure Communication Over Public Networks?

Answer: A virtual private network (VPN) is an encrypted connection from a device to a network on the Internet. Encrypted connections help secure the transfer of sensitive information. Method for VPN Ensure Communication Over Public NetworksVPN works by creating an encrypted connection between devices. Encryption is a method of encrypting data so th

Public Key Encryption

Public key cryptography provides a secure way to exchange information and authenticate users by using pairs of keys. The public key is used for encryption and signature verification, while the private key is used for decryption and signing. When the two parties communicate with each other to transfer the intelligible or sensible message, referred t

Private VLAN

Prerequisite - Virtual LAN (VLAN) Virtual LAN (VLAN) is used to break a broadcast domain into smaller domain at layer 2. Only (all) hosts belonging to same VLAN are able to communicate with each other while communicating with other VLAN hosts, Inter Vlan routing is done. But in same VLAN, if we want some hosts should not be able to communicate with

Private Browsing

Private Browsing Overview: As day by day, the use of internet browsing has been increasing, people are getting aware of their privacy and protecting personal information. No one wants to disclose what sites they are browsing and the local data associated with it, which can be used to retrieve personal sensitive information. For example, if on a com

Types of Virtual Private Network (VPN) and its Protocols

VPN stands for Virtual Private Network (VPN), that allows a user to connect to a private network over the Internet securely and privately. VPN creates an encrypted connection that is called VPN tunnel, and all Internet traffic and communication is passed through this secure tunnel. Virtual Private Network (VPN) is basically of 2 types: 1. Remote Ac

Private Branch Exchange (PBX)

Private Branch Exchange (PBX) is private phone arrangement that permits clients to converse with one another. Diverse equipment parts cooperate to give availability to phone arrange. A PBX works as association's inner phone arrangement. PBX system keeps up directing and propelled calling highlights for inbound and outbound calls. Introducing PBX wa

Introduction to Virtual Private Network (VPN)

In today's digital era, communication has become one of the most important aspects of every individual's life. So the threats and cyber attacks have become more aggressive than ever before. The threat ratio has increased by 45% in the past 7 years & global cybercrime is estimated to be around USD 6 Trillion (by 2025). That's why it becomes impo

What is APIPA (Automatic Private IP Addressing)?

APIPA ​comprises Automatic Private IP Addressing, a networking functionality that enables computers to automatically assign themselves an IP address when they are unable to acquire one from a DHCP server. APIPA will be employed when a device that is intended to use DHCP for obtaining an IP address fails to connect with the DHCP server. In this case