Angry IP Scanner (or simply ipscan)

What is Angry IP Scanner?

Angry IP Scanner (or simply ipscan) is an open-source and cross-platform network scanner designed to be fast and simple to use. It scans IP addresses and ports as well as has many other features.
It is widely used by network administrators and just curious users around the world, including large and small enterprises, banks, and government agencies.
It runs on Linux, Windows, and Mac OS X, possibly supporting other platforms as well.

Angry IP scanner is a very fast IP address and port scanner.
It can scan IP addresses in any range as well as any their ports. It is cross-platform and lightweight. Not requiring any installations, it can be freely copied and used anywhere.
Angry IP scanner simply pings each IP address to check if it's alive, then optionally it is resolving its hostname, determines the MAC address, scans ports, etc. The amount of gathered data about each host can be extended with plugins.

It also has additional features, like NetBIOS information (computer name, workgroup name, and currently logged in Windows user), favorite IP address ranges, web server detection, customizable openers, etc.
Scanning results can be saved to CSV, TXT, XML or IP-Port list files. With help of plugins, Angry IP Scanner can gather any information about scanned IPs. Anybody who can write Java code is able to write plugins and extend functionality of Angry IP Scanner.
In order to increase scanning speed, it uses multithreaded approach: a separate scanning thread is created for each scanned IP address. The full source code is available Download

Set Port

If you want to view only IP with live ports

Set IP range Example if you want to scan Modem ( modem with the same Internet Provider).
Get your WAN IP ( IP address set by your Internet Provider) just login your modem.. Go your modem stats find your WAN IP address..

Sample IP 120.28.80.158 Just change the 3rd to 4rth value 120.28.XX.XXX
RED = NO reply or Pings
Blue = With Ping no alive Ports
Green = With Alive Ports

Basics About Ports:

Port 23 = Telnet TCP port 3389 (server)

Port 22 = SSH
Port 80 = HTTP Web Access ( type the IP on your browser you can access the modem GUI)
Port 443 = HTTPS Secured Web Access ( type https:// IP Address here or IP address :443)
https://192.168.15.1 or 192.168.15.1:443