How to find a free ip address

To get a look at how a Ping sweep tool operates you could try out the SolarWinds Ping Sweep function. The tool works on Windows and it has a graphical interface. You need to enter an address range before starting the sweep. The results of a sweep show each IP address in use, the host name of that device and the response time for that node. Unfortunately, this tool is not free. The toolset is a bit pricey, but it is packed with all of the network administration tools that you are going to need. You can try out the package in a day free trial.

Scans can be run through the graphical user interface GUI or the command line. Scans are multithreaded to ensure that IP addresses are found quickly. When running a search you can enter hostnames , IP address ranges , and port ranges to determine what information is displayed on the screen. Once you activate the scan you are then shown a list of IP addresses on the screen.

In practice, this allows you to check up on the status of these ports to verify that the network is secure.

How to Find Unknown IP Address of Devices (CCTV IP Cameras ,DVR, NVR, Biometric etc..)

Being able to check up on IP addresses and port status together allows you to manage your IPs while simultaneously monitoring security vulnerabilities. You can also see the host names , MAC addresses , and operating systems of connected devices. To make it easier to run subsequent searches, you can save scan configurations. Being able to save configurations and results like this makes running scans and feeding back their results much easier.

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As a port scanning solution, SolarWinds Port Scanner is suited to those organizations that need a fast and low maintenance IP scanning solution. The option to use a GUI or command line interface makes this program accessible to users no matter which they prefer. Best of all, SolarWinds Port Scanner is available as a free tool.

One level up from scanning is tracking. An IP tracker will spot when an allocated IP address gets dropped or becomes unresponsive. This situation is very rare on a small network, but once you install a separate DHCP server , dropped or changed IP addresses start to become a big issue. If you try allocating your IP addresses yourself without a server, you are going to end up with duplicate addresses and DNS errors , so things can really get out of hand very quickly without a tracker.

When you think of all of your tasks to administrate your network, the allocation of IP addresses is pretty close to the top of the list. However, few administrators think to keep checking on IP addresses. The lack of tracking capabilities on most networks can spell disaster. You will end up firefighting and trying to work out how two devices ended up with the same IP Address and you will wonder why it is that one part of the network keeps blocking up. These are address tracking issues that you need to get ahead of. Avoiding network address issues is the first stage of a smarter way to work.

Make contention prevention and subnet right-sizing priorities for your network and many of your regular problems will disappear. SolarWinds gives a much better deal with its IP Tracker than it does with its Ping Sweep tool, because this standalone utility is completely free of charge. The software installs on Windows. This tool is able to spot IP address misallocation that results in duplications.

However, that functionality is only usually expected from an IP address manager and the SolarWinds IP Address Manager covers all of those duties if that is the type of coverage that interests you. The tool scans the network and then lists all of the devices that it discovered in a GUI interface. The list is organized a little like a Windows Explorer directory structure.

How To Scan Network for IP Addresses Using Command Line Tools & 3rd Party Software

This tool keeps its eye on the system and will notify you if a new device connects to the network. It can also detect hidden devices and rogue DHCP servers. So, this ongoing monitor of IP addresses acts as a security tool. Network IP scanning is the basic element of IP management.

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  • 1. How to find your public IP address.
  • What is a Dynamic IP Address?;

If you are just starting up a new, small network, IP address scanning should be all you need. As your network grows, however, you will need to advance to IP address tracking and on to using an IP address manager. IP Address Manager IPAM tasks are necessary because many devices that have been allocated an address will be switched off or disconnected from the network before their leases expire. In these scenarios, the procedures to relinquish an address are not always completed.

What is a Dynamic IP Address? – OpenDNS

When the device that abandoned an address reconnects, it goes through the address request procedure automatically rather than just continuing with the address that it already had. With this package, you get a better IP address tracking facility because it will automate many of the manual processes that you will usually need to go to in order to completely resolve all addressing issues. The scanner will also update all of the address pools to show newly available addresses and mark all discovered addresses as allocated.

SolarWinds builds its system monitoring tools on a common platform, called Orion. The IPAM is part of that system and so it can easily integrate with other SolarWinds monitoring and management utilities.

You can get the tool on a day free trial. In many instances, a free version of a tool is the same as the paid product, but with performance limitations; in the case of OpUtils, the two editions contain different utilities.

This is the basic requirement for any IP address tracking exercise. The tool offers several scanning options. It will spot the addresses that are marked as in use in your DHCP server, but are no longer active. This enables abandoned addresses to be returned to the DHCP pool of available addresses.

It can also guide you through the process of resizing your subnet sizes to extend network address pool for those network sections that have greater requirements. OpUtils runs on Windows Server and Linux. You can get a day free trial of the Professional edition of the utility. This site uses Akismet to reduce spam.


Learn how your comment data is processed. Menu Close. Need to perform a scan to find the IP addresses of devices on your local network? The disadvantage is he can never be sure what a device's address is without physical access to it.

What will you learn in this Tutorial

Using static IP addresses requires meticulous record keeping to maintain a current list of assigned addresses. When the list gets outdated, the easiest way to find available IP numbers is to let your computer do the work. You can view this file with Notepad. Finn McCuhil is a freelance writer based in Northern Michigan. He worked as a reporter and columnist in South Florida before becoming fascinated with computers. After studying programming at University of South Florida, he spent more than 20 years heading up IT departments at three tier-one automotive suppliers.

He now builds wooden boats in the north woods.