Computer Network Tutorial

Introduction of Computer Network Types of Computer Network Network Topology Computer Networking Architecture Transmission Modes (Data Flow) Basic Networking Devices Integrate Services Digital Network (ISDN)


OSI Model TCP/IP Model

Physical Layer

Digital Transmission Analog Transmission Transmission Media Switching

Data Link Layer

Error detection and Error correction Data Link Control Multiple Access Aloha

Network Layer

Network Layer - Logical Address Address Mapping Unicast Routing Protocol

Transport Layer

Process to Process Delivery User Datagram Protocol Transmission Control Protocol Stream Control Transmission Protocol Session Layer and Presentation Layer

Application Layer

Domain Name System Application Protocol E-mail Cryptography


Classes of Routing Protocols Classification of Routing Algorithms Controlled Access Protocols in Computer Networks Differences between IPv4 and IPv6 Fixed and Flooding Routing Algorithms Advantages and Disadvantages of Fibre Optics Cable APIPA Difference between Active and Passive FTP Fiber Optics and its Types Method of Joining and Fusion of Fiber Optic Cable Define Framing in Computer Network Disadvantages of Computer Network Mesh Topology Diagram in Computer Network Ring Topology in Computer Network Star Topology in Computer Networks 4G Mobile Communication Technology Advantages and Disadvantages of LAN Advantages and Disadvantages of MAN Advantages and Disadvantages of WAN Application Layer in OSI Model Cyclic Redundancy Check Example Data link layer in OSI model Difference between Transport and Network Layer Hamming Code Example Network Layer in OSI Model Session Layer in OSI Model Transport Layer in OSI Model Two Port Network in Computer Networks Uses of Computer Networks What is Computer Network What is Framing in a Computer Network Advantages and Disadvantages of Bus Topology Difference between Star Topology and Bus Topology Subnetting in Computer Network Subnetting Questions and Answers What is Bus Topology What is Network Topology and Types in Computer Networks Access Control in Networking Basic Characteristics of Computer Network Benefits of SOCKS5 Proxy in Computer Networks Computer Network viva Questions Difference between BOOTP and RARP Difference Between Network Topologies and Network Protocols Difference between NFC and RFID Difference Between Point-to-Point Link and star Topology Network Differences Between MSS and MTU Differences Between Trunk Port and Access Port Different Modes of Communication in Computer Networks MIME Protocol in Computer Networks Modes of Communication in Computer Networks Network Attack in Computer Network Port Address in Networking Simplest Protocol in Computer Network Sliding Window Protocol in Computer Network Stop And Wait Protocol in Computer Networks TCP 3-Way Handshake Process in Computer Networks What is a Proxy Server What is APPN What is ICMP Protocol What is Point-to-Point Protocol What is Port Address in Networking What is the HDLC Protocol What is VRRP Protocol Difference Between Analog and Digital Signals Difference Between Hub and Repeater Difference between Repeater and Switch Difference Between Transparent Bridge and Source Routing Bridge Source Routing Bridge in Computer Networks Transparent Bridge in Computer Networks Transport Protocol in Computer Networks Types of CSMA in Computer Networks What is Wired and Wireless Networking Network Security in Computer Network Disadvantages of Extranet Difference Between TELNET and FTP Define Protocol in Computer Networks Guided Transmission Media in Computer Network What is a Gateway in a Computer Network IGMP in Computer Networks LAN Protocols in Computer Networks MAN Meaning in Computer Modulation Techniques in Computer Networks Switching in DCN TCP/IP Applications What is IGMP? What is Modem in Networking What is Non-Persistent CSMA Difference between Cell Splitting and Cell Sectoring Forouzen Computer Network Open Loop and Closed Loop Congestion Control Types of Cluster Computing WAP-Wireless Access Point What are the elements of the Transport Protocol Difference between Gateway and Switch Flow Control in Data Link Layer Body Area Network Flooding in Computer Network Token Ring in Computer Networks VoIP in Computer Networks What is Infrared Transmission Congestion Control Techniques Forward Error Correction (FEC) Switching Techniques What is Telnet in Computer Network What are the Types of IPv4 Addresses IEEE 802.6 (DQDB) IEEE 802.15.4 Technology What is HDLC (High-level Data Link Control)? What is SMS Hubbing in Telecom? Circuit Switching in Computer Networks Communication Satellites in Computer Networks Features of HTTP Protocol IMAP4 (Internet Message Access Protocol) Internet Services How to Set up a Wireless Router Internetwork Routing in Computer Networks Distributed Computing System Features of GSM The 802.11 MAC Sublayer Protocol What is IEEE 802.3? What are Hubs and Switches in Computer Networks? What is Modem in a Computer Network? What is multicasting in Computer Networks? GSM -The Mobile Station What is Network Server? Slotted Aloha in Computer Network What is Ethernet in Computer Networks What is Arpanet? Radio Access Network (RAN) TCP 3-Way Handshake Process PING SWEEP (ICMP SWEEP) Print Server Private IP Address Security Services in Computer Networks Protocol Data Unit (PDU) CSMA with Collision Avoidance (CSMA/CA) What is Gateway in Computer Network? Advantages of Networking Data Link Layer Design Issues DHCP in Computer Networks Internet Security Association and Key Management Protocol (ISAKMP) What is Switch Hub? Telnet Full form in Networking Multimedia Systems Quality of Service in Computer Networks What is Carrier Sense Multiple Access (CSMA)? What is Circuit Switching What is Duplex Network? What is Web Protocol Network LAN Technologies Classes in Computer Network Low-Density Parity Check (LDPC) Wireless Internet Service Providers(Wisps) What is Handshaking? Cache Server What Is WSN Network? Check Sum Error Detection Linear Bus Topology Functions of the Transport Layer Infrared Transmission in Computer Networks Digital Signal in Computer Network Digital Data Transmission in Computer Networks Define Checksum with Example Computer Network Security Requirements Brust Errors in Computer Network Back Side Bus (BSB) 2-Dimension Parity Check in Computer Network Router and Brouter Microwave Transmission in Computer Networks Magnetic Media in Computer Network A One-Bit Sliding Window Protocol CDMA-Near-Far Problem Reference Models in Computer Networks Uni-cast, Broadcast, and Multicast in Computer Networks Uses Of Bridges in Computer Networks What are Gateways in Computer Network?


What is a ping sweep?


A ping sweep is a method used to scan a network actively seeking responses from devices connected to it, thus identifying those in use. It operates by sending ICMP ECHO commands to multiple hosts and monitoring the replies. When a host responds, it confirms its active presence on the network. This process is vital for determining the current network connections and assessing which devices remain active. Additionally, it involves mapping each IP address to its corresponding host.

Top of Form

Ping sweep is another scanning method or protocol, especially an ICMP sweep or an Internet Control Message Protocol (ICMP) sweep. It is applied to detect network devices that are reachable or have available IP addresses within a given range.

Ping sweep is another scanning method or protocol, especially an ICMP sweep or an Internet Control Message Protocol (ICMP) sweep. It is applied to detect network devices that are reachable or have available IP addresses within a given range.

A ping sweep is when the internet control message protocol (ICMP) sweep is used to scan the network to identify which IP addresses within a specific range are alive or reachable.

Ping sweep, ICMP sweep, or Internet Control Message Protocol (ICMP) sweep is a network scanning technique that aims to discover IP addresses within a specified range of live machines or that are reachable.

Aping sweep (also referred to as ICMP sweep or ICMP Sweep) is a scanning method that is utilized to determine which IP addresses among a particular range are alive or reachable.

ICMP sweep, also known as pinging or ICMP sweep, is a network scanning method intended to discover the existing IP addresses in a particular range that are alive or reachable. Through this protocol ping requesting ICMP echo is used as a means to verify if a target host is online or offline.

Working process of ping sweep

Here's how a ping sweep works in detail: Here's how a ping sweep works in detail:

Understanding ICMP: ICMP stands for Internet Control Message Protocol, which is the interactive part of a network that serves to transfer notifications and information messages filled with alerts of a technical problem encountered during communication between the devices on the IP data network. One of the most popular types of ICMP messages is echo request, and echo reply messages are usually tagged by the name "pings."

Sending ICMP Echo Requests: In this type of scanning, the scanner sends out ICMP echo requests to a list of IP addresses. These types of requests are like asking icmp's address to give a reply by sending a packet to the target IP address. The next step is to send the request for a response directly. Responses: The destination IP will become active and respond to ICMP echo reply if the target IP is active and reachable. The scanning tool will summarize the replies it has obtained and that the corresponding IP address is intermediating input.

Identifying Live Hosts: ICMP(Internet Control Messages Protocol) echo requests are sent to IP addresses in several possible ways, and analyzing the responses allows us to draw conclusions about which hosts are alive on the network. The hosts replying to the echo command are most likely those running and functioning normally.

Generating a Report: As soon as the ping interpretation phase is completed, the tool issues a report classifying all the IP addresses that responded positively to the ICMP echo request.

Network administrators and security experts commonly use ping to map network topologies, connect live devices, and spot security flaws. On the contrary, some network switches or fliers could be made to stop ICMP echo questions, which would affect the quality of the output of the ping sweep. Moreover, "ping sweep" ungraceful of use and illegal information dissemination may be viewed as an intrusion that goes against network security policies or laws and statutes. That is why it's imperative that deploying ping sweeps be done coherently and with a proper set of guidelines.

Why are ping sweeps important?

Ping sweeps are important for several reasons: Ping sweeps are important for several reasons:

Network Discovery: By doing this, ping sweeps enable to discovery of host devices that are active on the network. Using ICMP Echo Request packets sent to a certain range of IP addresses to identify the hosts that respond and are alive, the sender can accomplish that. That's the reason why network administrators have to understand the network wiring layout and topology.

Inventory Management: Knowing what devices are in operation on the network is required so that an inventory can be taken for management. Sweeps allow regular scanning of the network and updating of the inventory database with information on all devices still connected. Therefore, organizations will always have an up-to-date list of all devices connected to the network.

Security Auditing: Ping scans are often incorporated into security audits to find unauthorized and rogue devices on a network. Network administrators can detect malicious devices by scanning for active hosts. Additionally, these administrators can identify hosted devices that shouldn't be in the network and act accordingly to secure the network.

Troubleshooting: Ping sweeps also play an important role in finding the root of the issue, as they can point out if a host or individual segment of the network is the problem. Identifying a particular device as unresponsive allows administrators to use the problem-solving approach and more effectively approach the root cause.

Resource Allocation: Besides pinpointing the source of the vulnerability, a ping sweep can also offer some insight into resource allocation and capacity management. Knowing the connectivity numbers of the associated networks and machine types, the admin can balance the allocation distribution of resources, such as bandwidth, IP addresses, and server resources, to supply the needs of the connected devices.

Squeezing ping sweeps in this is indispensable for network management, security, and maximizing performance, which becomes one of many essential things for the administrator to continue accessing a healthy and efficient network.

What ping sweep tools are available today?

In January 2022, virtual machine and virtual drive technology are quite mature, though there are still some shortcomings. These devices are, as a rule, of use for network administrators and security experts, and they are capable of detecting active hosts within a given IP range. Here are some of the commonly used ones: Here are some of the commonly used ones:


Nmap: Nmap is a useful tool with many functions, such as ping sweep. It is Open-Source and began as an identifying tool used to map the network topography and assess the security of current network installations.

Angry IP Scanner: Angry IP Scanner (undoubtedly a small but handy program with a friendly name) is free, open-source software that detects IP addresses and ports within seconds. It contains a short GUI interface and can run on several platforms.

Fping: Fping is a command that allows you to check the reachability of networked hosts using a ping request. The functionality of the system is guaranteed using the introduction of an IP address range and the possibility of filtering the results by address types or active or inactive hosts and DNS records as well. A hostname is also displayed, and a classifier either flags the DNS address as having an anomaly or missing record.

Masscan: Contrary to the expected, Masscan performs TCP port scanning faster than ping sweep. It is destined for rapid checking of the great network of the latest severity.

Hping: Hping also is an ICMP ping command-line tool that shares the same feature with the command-line tool, either ping or traceroute form that is heavily used by those who prefer the command usage to those who prefer the command line. It can be set up on Windows, Mac OS, Linux, or Unix platforms, no matter which one.

Forward path, the ping request function occupies the underlying TCP/IP protocol at the networking layer. TCP and User Datagram Protocol functionality may lure your network, including computers and routers. Port scanning will be possible.

Therefore, it is a great tool for setting a common ground for firewall testing, which could be common to many organizations with a dense flow of security software to use on their networks. While this feature makes port scanning widely used among cybercriminals, it should be remembered that the same can be applied to ethical hackers.

NetScanTools Pro: NetScanTools Pro is a commercial tool that performs many tasks, such as network scanning and diagnostics. These comprise sweeps, traceroute, port scanning, and DNS lookup.

ZMap: ZMap is a network scanner, which has very fast and attention to all-encompassing internet-wide scanning. It was optimized for speed and was able to scan an entire IPv4 space in a few minutes.

A lot of these tools are handy for authentic networking initiatives, but they also work on the other side of the coin for bad motives. One should use such tools only with proper authorization and consider ethical principles while doing this.

Similarly, Nmap is a free Linux terminal-based network scanning tool, like that of Paessler PRTG, that connects to remote hosts through command-line input. It can be installed and run on Windows, Mac OS, Linux, and Unix as an active scan through Transmission Control Protocol (TCP) or as a ping.

The source of this information is the IP address of any active host and the hostname of the single computer. In TCP mode, it will also work as a port scanner and will throw any alarming open ports on each connected device or router that it detects.

Providing raw data collected by Nmap can be challenging because the information is tough to absorb. However, there are additional "reader" applications that can break the data into simple records.

What is a Ping Sweep, and why would a business need one?

Ping sweep is in use is several reasons in network administration and cybersecurity. Here are some of the most common uses of ping sweeps: Here are some of the most common uses of ping sweeps:

Network Troubleshooting: The ping sweep that addresses network connectivity issues can be among possible applications. Admins can track down opened ports on a group of IP addresses and hence determine which devices are currently working and which are not. This can contribute to the process of finding faults within the network, through which network equipment diagnosis can be traced, for example, misconfigured routers and switches, DNS issues, or faulty network devices.

Network Mapping: Ping sweeps are not restricted to breaking down only, they can also detect the network's map as well. Using the knowledge of which specific IP addresses are active and eventually answering pings, administrators can perform better topologic studies of their network. This is a node that can demonstrate the existing failures as well as unused IP addresses and also the detection of unauthorized devices on the network among others.

Network Security: Ping sweeps are a very useful instrument for network security specialists, a notable tool that can be used to detect the active devices on a network. For instance, they could leverage the information to highlight the existing weaknesses, such as those the systems are unsecured or have an obsolete software system. Ping sweeps are also used to find unauthorized devices on the network, which are situated between rogue access points or unauthorized computers. Through recognition of these devices networks security experts will be able to come out with ways of securing the network against unauthorized access.

However, ping sweeps are not only useful for attackers but also become useful tools for intruders to collect information about their victims. Attackers can find potential maltreatment aimed at a network through ping sweeps, such as devices available on the web and answering pings. This will be used by hackers and analysts to achieve their goals, such as DoS destruction and port scanning.

Responsibility and ethicalness come to the forefront and need to be taken into consideration when conducting ping sweeps. This means requesting permission and documenting and reporting all the findings. By responsibly using ping sweeps, network administrators and security professionals can improve the security and reliability of their networks.

Time Required for Running a Sweep Ping Vary

Sometimes, a ping sweep can take one to two minutes, though it depends on the scale of the IP addressing range over which the scan is conducted. This can sometimes be resolved in a single login attempt, whether it takes a few seconds or a few minutes. Ping sweep is a procedure that is carried out when there is a range of IP addresses are sent an ICMP request. The result of this operation is an ICMP request that returns the IP address if it exists in the range. They accomplish this until they have let off a ping for all IP addresses that are in the range.

Sweep Monitoring in Network Security

Ping scans are an effective means of network security tool among security professionals. Scanning the network allows for discovering the information about the target network and determining vulnerable systems more easily. Here are some of the ways that ping sweeps can be used in network security: Here are some of the ways that ping sweeps can be used in network security:

Ping Sweeps as a Reconnaissance Tool: Attackers can conduct scans that convey valuable information about a target network by way of ping sweeps. By determining which IP addresses are active and replying to pings, the attacker has a broader perspective on the network topology. Eventually, they may target attacking the network infrastructure. Attackers can use this information to scan and infiltrate networks, such as DoS attacks.

Identifying Live Hosts and Vulnerable Systems: Ping sweeps can even be used to locate live hosts, should they be found on a network where there might be some weak or insecure systems. Through a process of pinging IP addresses to which devices are connected, security experts will be able to pick out the ones that are already online and reply to network requests. Such information can be tapped to map out vulnerable systems that include, but are not limited to, wrongly configured gadgets, inadequate software, or itself is outdated.

Examples of Attacks Using Ping Sweeps: Enemies can carry out different attacks by utilizing the technique of ping sweeping. For example, DoS attacks can be carried out by making use of ping sweep, where the attackers swarm a target device by sending a bigger number of ping requests, which overwhelm it and finally cause it to come crashing down. In addition, implementing ping sweeps is often used in port scanning when attackers employ several methods to identify open ports on the user's device.

Generally, ping sweeps are necessary and useful network security aspects that enable the identification of possible network vulnerabilities and ensure the security of the system. Nonetheless, organizing the sweeps in such a manner would require an ethical and responsible approach and the consent of the owner before any findings are reported and properly documented. By applying ping sweeps responsibly, network security specialists get access to a new tool for network security and reliability improvement.

Using Ping Sweeps for Attack Purposes

Here, using Ping Sweeps with Malicious Purposes is Mentioned.

The attacker may have utilized ping sweeps to determine which hosts are active on the network. The adversary sends an ICMP echo request (ping) to multiple destinations' IP addresses to have an idea of which IP address is connected to a live Internet Protocol (IP) endpoint. If the attacked host replies to the ping, the IP address becomes known to the pentester. Such an assault can be resorted to for enriching data by which more devastating attacks can compromise the network. Besides that, when attackers have a clear goal in mind, the ping sweep is often followed by a port scan or other advanced techniques that are used to map an entire network for further attacks.

Example of a Ping Sweep

For illustration, assume a ping scan simulation.

Meanwhile, keep up with the instance Ping Sweep, which uses the command-line tool to ping ICMP Echo Request messages to a range of nodes in the system. The objective herein is to quicken the process of port scanning (which will eventually find all active hosts within the given IP address range). In the course of the ping—-scan, the network is mapped out, and then you will be able to see the active hosts by using the ping sweep.

The approach of performing a ping sweep

The essence of ping sweep is to send several ping requests one after the other only to the active IP addresses responsive to the requests to identify the active addresses. Here are the general steps for conducting a ping sweep: Here are the general steps for conducting a ping sweep:

  1. Identify the Range of IP Addresses to Scan: Use the Scan Range for IP addresses to specify. There are a few ways to do this, including using the subnet calculator or the network's IP address and subnet mask.
  2. Choose a Ping Tool: Try to choose such a tool for the sweep and test it separately. Here, we have typical tools like the 'ping' command on Linux and Windows platforms as well as Net sows like Nmap and Fping.
  3. Conduct the Ping Sweep: Hand over the range of IP addresses that you intend to scan into the ping app and send the ping sweep. This tool sends a series of router requests to each address in a range and waits for a reply. A reply to this tool will show that IP addresses are responsive and are alive.
  4. Analyze the Results: After scanning the ping sweep, which still needs to be completed, analyze the results and detect which IP addresses are active and responding. By collecting this type of data, you can eliminate a network issue, accurately map topology, or find a system that can be hacked.

It is vital to mention that engaging in ping sweep without prior permission is likely to be perceived as an offense, as it provokes disciplinary or legal actions. Hence, the main authority that should be consulted is the board before an actual ping sweep is conducted. Also, it would be proper to carry out the ping sweeps ethically and responsibly, which requires establishing all findings correctly and reporting them. The deployment of directed sweeps strategies by network administrators and security professionals in a proper manner is an opportunity to increase the security of these systems and networks.

The Chorus: A Ping Sweeps

Here are some best practices for conducting ping sweeps: Here are some best practices for conducting ping sweeps:

  1. Obtain Permission: It is also significant to get authorization before carrying out the ping sweep. This can be done by getting approval from the area authority, which can include a network administrator or a security officer. Also, the fact that you did a ping sweep without permission can result in legal and/or disciplinary actions.
  2. Use Ping Sweeps Responsibly: Ping sweeps are a positive tool to use ethically and responsibly. It includes recording proper documents and reports, plus the data obtained should be used only for legitimate purposes such as diagnosing network problems or security evaluations.
  3. Avoid Overloading the Network: Network abuse can be detected by generating a massive amount of network traffic, which will restrict the accounts of other applications and services. To solve this, it is suggested to limit the number of ping commands dispatched per second and to schedule these cleaning sweeps during lull hours when the network traffic volume is low.
  4. Consider Firewalls and Security Measures: Though some firewalls and security mechanisms may block or limit the pinging operation, it may likely be possible for the attacker to conduct a ping sweep. All of these elements should be considered if a ping sweep is to be planned and different actions are needed as appropriate.
  5. Keep Records: Logging is one of the most important steps in scanning records. The date, time, and scanned IP addresses all have to be logged down. Such details can be further utilized for investigations or reviews and that's how records remain accurate and thoroughly reported.
  6. Regularly Conduct Ping Sweeps: Periodical ping sweepings may contribute to the network services operating at their best or before the occurrence of severe problems. I suggest performing ping sweeps periodically, either once a month or every three months, to avoid breaches in cybersecurity.

Through the adoption of these good practices, network administrators and security professionals will be able to successfully ping sweep and responsibly contribute to tightening the network's security and stability.


In essence, a Ping Sweep stands out as a powerful network scanning technique adept at identifying active IP addresses corresponding to live hosts. It serves dual roles: aiding attackers in pinpointing targets and assisting security professionals in monitoring network activity for potential threats. Achieving this, the Ping Sweep method sends ICMP echo requests (pings) to various target IPs, thereby discerning which ones are operational. While highly effective, it's worth noting that firewalls or other security measures may sometimes thwart its execution. Nonetheless, Ping Sweep remains an indispensable component of a comprehensive security strategy, serving as a vital tool in network scanning endeavors.