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- Last Review: June 8,
2012Home > NetScanTools
Pro > Technical Details > Ping
Scanner Tool
Ping Scanner (NetScanner) Tool Description - Ping a Set of IP Addresses with ICMP and Report the Active Devices.
What is a Ping Scanner (NetScanner)?
The Ping Scanner Tool sends ICMP
ping packets to every IP address in any range of
IPv4 addresses you specify. It looks for ICMP responses
from active devices. This
tool operates across any range of IPv4
addresses whether on your subnet or across the
internet. It can also ping a list of IPv4
addresses that you need to ping. That list need
not be contiguous, it can be random.
Use Ping Scanner to locate active
devices and gather other information about those
computers. Use this utility in conjunction with
the Port Scanner tool for a full accounting of
each IP address. This tool is also known as
NetScanner (tm) or Ping Sweep.
Explore the tools >>
See
tool videos >>
Download
a free demo >>
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Ping Scanner slideshow
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Purpose of the Ping Scanner Tool
- The purpose of this tool is to
locate active IPv4 devices connected to your local
network or the internet. It does not support IPv6
but will do so in the near future.
Capabilities and Features
- FAST! Typical time to ping
every IP address in the local 254 IP address class C
subnet is 3.2 seconds - a faster platform, network
and set of targets will give you different results.
(Test platform: 3Ghz 2 processor XEON dual core XP
SP 3 system with 3.12GB ram and a 100mb wired
ethernet interface. Test Conditions: local subnet,
ping timeout 2 seconds, ping scan only, no
IP/hostname resolution, ARP scan, subnet mask or SMB/CIFS/NetBIOS queries)
- Ping Scanner.
Each target IP address is sent ICMP echo request
ping packets. Responding device IPs are shown along
with the response round-trip-time and the source IP
address of the responding ICMP echo reply packet.
- Hostname resolution.
Responding IPv4 addresses in the IP range or
imported IP list can be optionally resolved to a
hostname. This feature is dependent on DNS for
accurate results. If you use the 'default System
DNS' setting, SMB/CIFS/NetBIOS queries may also
obtain the 'windows computer name'.
- Do Local ARP Scan.
Following completion of a sweep, NetScanner can make
additional ARP requests to responding IPs and add
any new MAC address information into the results if
MAC addresses were not recorded during the initial
scan. This option is only useful for devices on the
local subnet since ARP is not routed.
- Do SMB/NBNS Scan - getting a
MAC address from SMB/CIFS/NetBIOS Name Server.
SMB queries will obtain a MAC address if the target
is a Microsoft Windows machine or Linux that
responds to SMB queries. If the target responds, you
can also get the Remote Machine Name table for
viewing in the reports. This feature is optional and
will work locally or across the internet if the
target is not protected from SMB queries.
- Do Subnet Mask Scan.
This option sends a ICMP address mask request and
displays any responding information. Whether the
target responds or not is a function of the target
operating system, ie. Windows 98 machines will
respond, but Windows XP and later machines do not
respond.
- Reports are available
once the sweep is completed showing the scan
statistics, report on an individual IP address or a
combined results report. The reports are shown in
your web browser (searchable, printable, can be
saved to disk).
- Import Target IP List from
File.
This allows you to import a non-contiguous list of
IP addresses, ie. random that can be any combination
of local or internet IP addresses.
Hosts File Editor.
This has been moved to DNS Tools - Core.
Ping Scanner (NetScanner) Video Tutorial (v11.02 shown)
About Ping Scanning
Whatever you want to call it, NetScanner, Ping Scanning or Ping Sweep is a
well known technique used to find live devices in a range IP
addresses. Historically it has been used with IPv4 and
for IPv6 the ranges of IP addresses are so large that it
may not make sense to use a tool like this. In an IPv4
environment where systems are allowed to respond to ICMP
Echo Request packets, this tool can be used to quickly
find the active hosts. However, so-called 'personal
firewalls' and other operating system firewalls can be
set to prevent the response by the system to ICMP
packets giving the appearance that there is nothing at
that IP address. If you are on the same subnet, our ARP
Scan tool will show those 'hidden' addresses even if
they are protected by a firewall on the system itself.
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